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Class 10th Geograhy Answer Key | ICSE Exam 2025-26 Board Term 1

1(i) (a). Study the extract of the Survey of India Map Sheet No. G43S7 and answer the following questions :
What is the social significance of the temple that is found at the six-figure grid reference 362001?

Solution:
The temple located at the six-figure grid reference 362001 likely holds immense social significance within the local community. Temples, especially in rural and urban settings in India, have long been centers of religious, social, and cultural life. This particular temple could serve several purposes for the community:
Step 1: Religious and Cultural Hub.
Temples are often the focal point for spiritual practices, festivals, and rituals. In such a setting, it becomes a space for community members to come together for religious services, prayer, and festivals, thereby fostering unity among people. The temple likely plays an integral role in the cultural life of the area, with traditional dances, music, and other community activities taking place in its vicinity.
Step 2: Social Functions.
Beyond its role in worship, the temple may also serve as a venue for social functions such as marriages, communal meals, and gatherings. These events not only fulfill religious needs but also serve as platforms for people to socialize and maintain close-knit ties within the community.
Step 3: Symbol of Heritage and Identity.
Additionally, the temple might hold historical significance, representing the cultural heritage of the area. Such religious structures often symbolize a community’s values, history, and identity, contributing to the collective memory of the people.

(i) (b). What is the reason for very few settlements in the southeastern quarter of the map extract?

Solution:
The reason for the scarcity of settlements in the southeastern quarter of the map extract can be attributed to several geographical and environmental factors. Most commonly, such a situation arises due to the following reasons:
Step 1: Challenging Terrain.
One significant geographical barrier could be the presence of rugged terrain, such as mountains, hills, or uneven landforms. These natural features make it difficult to construct roads, build infrastructure, or practice agriculture, all of which are essential for sustaining large populations. Settlements typically avoid such areas due to the high costs and difficulties associated with developing the land.
Step 2: Lack of Water Sources.
Another possible reason could be the absence of reliable water sources. Water is crucial for drinking, agriculture, and other daily activities. In the absence of rivers, lakes, or wells, the area may be unsuitable for human habitation. Many regions with few settlements suffer from inadequate access to fresh water, which directly affects agriculture and human well-being.
Step 3: Unfavorable Soil and Climate Conditions.
The region could have poor soil quality and unfavorable climatic conditions, such as frequent droughts, high temperatures, or inadequate rainfall. Such conditions make it difficult for people to cultivate crops or sustain livestock, resulting in fewer settlements. Additionally, extreme weather patterns could make the area less hospitable.
Step 4: Limited Accessibility.
If the area is difficult to reach due to a lack of roads or proximity to transport hubs, settlements will naturally be limited. Areas that are isolated by difficult geography or poor transportation infrastructure often see fewer settlements.

(ii)(a). What is 3r in grid square 3501?

Solution:
The notation ”3r” in grid square 3501 refers to a specific location within that grid square on a map. Grid references on topographic maps are generally used to pinpoint locations with great precision. Here’s a breakdown of how to interpret the notation:
Step 1: Understanding the Grid System.
A six-figure grid reference is typically divided into smaller squares. For example, in the case of the six-figure grid reference 3501, the area is divided into smaller parts using both horizontal and vertical divisions. The ”3r” notation indicates a sub-section or a specific point within grid square 3501. This helps in locating a more precise feature within that larger grid area.
Step 2: Importance of Sub-divisions.
The ”3r” designation might be referring to one of the smaller divisions within grid square 3501. Grid squares on maps are divided to increase accuracy, especially in cases where the land features are large or too spread out to be easily indicated by the larger grid square alone. For instance, ”3r” could indicate a specific location such as a river, road, or building within the larger area of 3501.
Step 3: Usage of the Reference.
By using this grid reference, people can identify more specific points on the map. The ”3r” helps map readers quickly locate small features that might otherwise be difficult to pinpoint with just the larger grid square number. This system is especially helpful in navigation, surveying, and in any task that requires high precision.

(ii)(b). Identify one relief feature found in the grid square 3796

Solution:
One of the relief features found in grid square 3796 is a hill. In geographical terms, a hill is a raised area of land, smaller than a mountain, and typically characterized by a more rounded top. Here’s how we can determine this from a map:
Step 1: Relief Features on Topographic Maps.
Topographic maps use contour lines to represent the shape and elevation of the land. These lines indicate areas of equal elevation. When the contour lines are close together, it usually indicates steep slopes, which often occur at hills or mountains. Conversely, if the contour lines are more spaced apart, it indicates flat or gently sloping areas.
Step 2: Identifying Hills.
On a map, a hill will typically be shown by contour lines that form a series of concentric circles or ovals. The innermost circle represents the summit or the highest point of the hill. As the contour lines move outward, they represent lower elevations. By analyzing grid square 3796, we can observe the contour lines to identify the presence of a hill.
Step 3: Interpreting Map Features.
In grid square 3796, the presence of closely spaced contour lines indicates a significant elevation change, suggesting a hill. The location of this hill makes it an important geographical feature in that region.

(iii) (a) The area shown on the map extract has seasonal streams, but in 3903 a large perennial water source can be seen. What may be the reason for the presence of this large perennial source of water?

Solution:
The reason for the presence of a large perennial water source in grid square 3903 is likely due to the presence of an underground water reservoir or aquifer. Unlike seasonal streams, which rely on rainfall and only flow during the wet season, perennial water sources such as rivers or springs are sustained throughout the year.
Step 1: Underground Water Sources.
In many regions, underground reservoirs or aquifers maintain a steady flow of water, even during dry months. These sources tap into water stored beneath the Earth’s surface, providing a continuous flow of water regardless of seasonal changes.
Step 2: Localized Geographic Features.
The presence of springs or large perennial rivers could also explain the constant water flow. Such perennial sources are typically fed by groundwater, snowmelt, or larger water bodies upstream, which provide a constant supply of water, even in areas with dry climates.

(iii) (b) Which other source of water seen on the map extract is perennial?

Solution:
Another perennial source of water seen on the map extract could be a lake or a reservoir. Unlike seasonal streams that depend on rainfall, lakes and reservoirs typically have a more consistent water level, especially if they are fed by perennial rivers or groundwater.
Step 1: Water Body Characteristics.
Lakes and reservoirs are artificial or natural water bodies that store water throughout the year. These water sources often supply water for irrigation, drinking, and industrial use, making them important perennial sources.
Step 2: Continuous Water Supply.
Unlike seasonal streams, which only carry water during certain times of the year, lakes and reservoirs store a large volume of water, providing a continuous and reliable source of water supply to nearby areas.

(iv) (a) While travelling for work from Dhaneri (3100) to Marwada (3197) along the metalled road, Sahil crossed over a number of ’causeways’. Why are causeways present in the area shown on the map extract?

Solution:
Causeways are raised roads or pathways that are built to cross over areas that are prone to flooding or are otherwise low-lying. In the area shown on the map extract, causeways are likely present due to the following reasons:
Step 1: Presence of Low-Lying or Flood-Prone Areas.
The terrain in the area might have areas that are subject to seasonal flooding or waterlogging. A causeway helps in providing a stable route across such areas by elevating the road above the level of surrounding water, ensuring that vehicles and pedestrians can cross without being affected by water.
Step 2: Natural Watercourses.
Causeways are often constructed across natural watercourses, such as streams, small rivers, or seasonal drains, to keep the road accessible year-round. In areas where these watercourses fluctuate with the seasons, causeways provide a means of maintaining road access even during high-water periods.
Step 3: Infrastructural Necessity.
Given the importance of road transport for local movement and connectivity, constructing causeways ensures that transportation infrastructure remains operational during all seasons, preventing the road from being washed out or submerged in the rainy season.

(iv) (b) Identify the drainage pattern seen in the grid square 3697..

Solution:
The drainage pattern seen in grid square 3697 is a dendritic drainage pattern. In a dendritic pattern, the tributaries of the river or stream resemble the branches of a tree. This pattern forms in regions where the underlying rock is relatively uniform, allowing rivers and streams to flow in a branching manner.
Step 1: Characteristics of Dendritic Drainage.
Dendritic drainage is the most common pattern and typically occurs in areas where the terrain is gentle, and the rock layers are uniform and easily eroded. It results in a tree-like appearance with smaller streams joining larger ones at acute angles.
Step 2: Identifying the Pattern on the Map.
On the map, the river or streams appear to be branching out in a way that looks like a tree with various smaller streams joining a main river or watercourse, confirming that this is a dendritic drainage pattern.

(v) (a). What is the difference in altitude between the highest point on the map extract and the contour height in grid square 3203?

Solution:
To determine the difference in altitude between the highest point on the map extract and the contour height in grid square 3203, we need to compare the two following elements:
Step 1: Identify the Highest Point on the Map.
The highest point on the map extract can be identified by locating the peak or the highest contour lines. The altitude of the highest point is typically indicated by the highest contour line or spot height marked on the map. From the map extract, we can see that the highest point is at a specific contour value.
Step 2: Identify the Contour Height in Grid Square 3203.
Grid square 3203 has a contour line, and the elevation at this point is indicated by the contour value. From the map, we can find the specific contour height associated with this grid square. Step 3: Calculate the Difference in Altitude.
Once we have the altitude of the highest point and the contour height for grid square 3203, we subtract the two values to find the difference in altitude.

(v) (b). What is the black horizontal line made between 98 and 99 northings called?

Solution:
The black horizontal line between 98 and 99 northings is known as a latitudinal grid line or parallel line.
Step 1: Explanation of Grid Lines.
In topographic maps, grid lines are used to mark specific coordinates on the map. Vertical lines represent eastings (east-west direction), and horizontal lines represent northings (north-south direction). The black horizontal line between 98 and 99 northings indicates a specific latitude on the map.
Step 2: Role of Northings.
The northing lines represent the distance north of the equator, and they help map users navigate the map by providing a way to measure position in the north-south direction. The line between 98 and 99 northings would represent a specific area that lies between these two latitudes.

2. On the outline map of India provided:
(i) Mark and name the fold mountain range of India.
(ii) Mark with an arrow and name the river also known as the ’Sorrow of ICSE’.
(iii) Shade and label the Gulf of Kutch.
(iv) Mark and label the Karakoram Pass.
(v) Mark and label an offshore oil field of India.
(vi) Shade and label the Laterite soil area in the northeastern part of India.
(vii) Mark and name the shared capital city of Punjab and Haryana.
(viii) Mark and label the Western Ghats.
(ix) Shade and label the river Krishna.
(x) Shade and label an area of dense population.

Solution:
Step 1: Fold mountain range of India.
The fold mountain range of India is the Himalayas, which is the highest mountain range in the country, located in the northern part of India.
Step 2: ’Sorrow of ICSE’ river.
The river known as the ”Sorrow of ICSE” is the Kosi River, which causes frequent floods in the state of ICSE.
Step 3: Gulf of Kutch.
The Gulf of Kutch is located along the western coast of India in the state of Gujarat.
Step 4: Karakoram Pass.
The Karakoram Pass is located on the India-Pakistan-China border, in the Karakoram mountain range.
Step 5: Offshore oil field of India.
The Mumbai High offshore oil field is one of the largest oil fields of India, located in the Arabian Sea.
Step 6: Laterite soil area in northeastern India.
The Laterite soil is predominantly found in the northeastern region of India, especially in parts of Assam, Meghalaya, and Nagaland.
Step 7: Shared capital city of Punjab and Haryana.
The shared capital city of Punjab and Haryana is Chandigarh.
Step 8: Western Ghats.
The Western Ghats are a mountain range that runs parallel to the western coast of India, passing through states like Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu.
Step 9: River Krishna.
The Krishna River flows through the states of Maharashtra, Karnataka, and Andhra Pradesh. Step 10: Area of dense population.
The Ganga-Brahmaputra Delta region, particularly the area around Kolkata and the surrounding districts, is an area of dense population in India.

3(i). Mawsynram, the rainiest place in the world, gets the rain from:

Correct Answer: (B) South-west monsoon wind - Bay of Bengal branch

(ii). Choose the characteristic that is true about Laterite soil:

Correct Answer: (D) It undergoes desiccation.

(iii) Identify the option which is most similar to: Tropical Evergreen vegetation : Tall trees and hardwood

Correct Answer: (b) Tropical Desert vegetation : Small leaves and spines

(iv) Assertion (A): Irrigation is practised in large parts of India.
Reason (R): India has a variety of soil types.

Correct Answer: (D) Both (A) and (R) are true but (R) is not the correct explanation of (A).

(v) Identify the type of coal that has the highest calorific value.

Correct Answer: (d) Anthracite

(vi) The residue of forms an important part of the cattle feed manure.

Correct Answer: (a) Groundnut

(vii) Identify the crop that is grown in the Rabi cropping season.

Correct Answer: (c) Mustard

(viii) Which industry is ideally located close to the raw material producing:

Correct Answer: (d) Sugar industry

(ix) Which of the following is NOT suitable for composting?

Correct Answer: (c) Neem soa.

(x) The picture given below depicts the use of waterway as a mode of transport. Identify the pair of cities which are most likely to be the termini of the waterway shown in the above picture:

Correct Answer: (a) Prayagraj and Haldia

4(i)(a). Name a state in India which is the first to receive the summer monsoon and is also the last to see its retreat.

Solution:
Step 1: Identify the state.
The state of Kerala in India is the first to receive the summer monsoon and is also the last to see its retreat.
Step 2: Explain the monsoon’s arrival.
The summer monsoon generally arrives in India in June. Kerala, being located on the western coast, is the first state to receive the monsoon rains.
Step 3: Explain the monsoon’s retreat.
Kerala also experiences the last retreat of the monsoon, which generally happens around September, after covering the rest of India.

(b). Mention the weather conditions experienced during the retreating monsoon season.

Solution:
Step 1: Define retreating monsoon.
The retreating monsoon season occurs during the months of September to November, when the monsoon winds start to withdraw from India.
Step 2: Weather conditions.
During this season, the weather conditions are characterized by:
- Decreasing rainfall across most parts of the country.
- Clear skies and lower humidity levels.
- Cooler temperatures in northern and central India, with some parts of the south continuing to experience rainfall.
Step 3: Changes in air pressure.
The air pressure begins to rise over the landmass as the monsoon winds retreat, causing drier conditions in many areas.

(ii)(a). Study the map showing the area that receives rains during winter and answer the questions that follow:

(a) Name the wind which brings rainfall to:
1. the shaded area labelled A.
2. the shaded area labelled B.

Solution:
Step 1: Wind bringing rainfall to area A.
The wind which brings rainfall to the shaded area labelled A is the Western Disturbance. These winds bring moisture from the Mediterranean Sea, resulting in winter rains over the northwestern regions of India.
Step 2: Wind bringing rainfall to area B.
The wind which brings rainfall to the shaded area labelled B is the Northeast Monsoon. These winds blow from the northeast and bring rainfall to the eastern coastal regions, particularly Tamil Nadu and parts of Andhra Pradesh.
(ii)(b). How is the rain brought by the winds named by you in (a) above, beneficial for the area shaded A and the area shaded B?
Solution:
Step 1: Benefits for area A.
The winter rainfall brought by the Western Disturbance is crucial for the rabi crops in the northwestern states of India, including wheat, barley, and mustard. The rainfall helps in the proper growth of these crops.
Step 2: Benefits for area B.
The rain brought by the Northeast Monsoon is important for the agricultural activities in the eastern coastal regions, especially for the cultivation of crops like rice, groundnut, and cotton. It also helps in replenishing groundwater levels in the region.

(b). If Shyam goes to Kochi in the same season, what difference of climate will he experience?

Solution:
Step 1: Climate of Kochi.
Kochi, located in Kerala on the southwestern coast of India, has a tropical climate. During winter, Kochi experiences mild and pleasant temperatures due to its coastal location. It does not experience snowfall and has higher humidity levels.
Step 2: Comparison with Nainital and Ooty.
Compared to Nainital and Ooty, Kochi will be significantly warmer and more humid. While Nainital and Ooty experience cooler temperatures, especially in the winter months, Kochi enjoys a tropical climate with mild winters but no snow or frost.

(iv)(a). Why is there a decrease in temperature in the month of June after the high temperature of May?

Solution:
Step 1: Influence of rainfall.
The high temperature in May is followed by a decrease in June because the onset of the monsoon brings heavy rainfall. The cooling effect of the rain lowers the temperature, despite the high temperature in May.
Step 2: Cloud cover.
Additionally, cloud cover during the monsoon months (especially June) blocks direct sunlight, which also contributes to the drop in temperature.

(b). Calculate the total rainfall of the station during the rainy season and give your answer in cm

Solution:
Step 1: Identify the rainy season.
The rainy season in India generally occurs from June to September. Therefore, we consider the rainfall data from June to September for calculating the total rainfall.
Step 2: Total rainfall calculation.
Rainfall during the rainy season is the sum of rainfall from June to September:
Total Rainfall = 43.9 + 51.4 + 39.8 + 20.9 = 155.9 cm.
Thus, the total rainfall during the rainy season is 155.9 cm

(c). Is station X located near the sea or away from the sea? Give a reason for your answer.

Solution:
Step 1: Characteristics of station X’s climate.
Station X experiences high temperatures in May, followed by a drop in temperature during the rainy season. The significant rainfall from June to September and the moderate temperatures indicate that the station is likely near a large body of water, such as the sea, which helps moderate temperatures and brings monsoon rains.
Step 2: Conclusion.
Given these characteristics, it is reasonable to conclude that station X is located near the sea.

5(i). Observe the picture of ex-situ soil given below and answer the questions that follow:

Solution:
Step 1: Identify the soil types marked as A and B.
In the given diagram, the soil marked as A is Floodplain soil, and the soil marked as B is River terrace soil.
Step 2: Describe Floodplain soil (A).
Floodplain soil is deposited by river floods, characterized by fine, alluvial material. It is rich in nutrients and is often used for agriculture due to its fertility.
Step 3: Describe River terrace soil (B).
River terrace soil is found on raised riverbanks and terraces formed by the periodic movement of rivers. It has well-drained, coarse-textured soil that is less fertile than floodplain soil due to its limited nutrient availability.
Step 4: Which soil is more fertile and why?
The soil marked as A (Floodplain soil) is more fertile than the soil marked as B (River terrace soil). This is because floodplain soil is frequently replenished with fresh, nutrient-rich deposits during floods, making it more suitable for agricultural use

(ii)(a). Name the soil component derived from the decay of dead plants and animals.

Solution:
The soil component derived from the decay of dead plants and animals is called humus. It is an organic material that contributes to soil fertility by providing essential nutrients.

(b). Why is the component mentioned by you in (a) important for agriculture?

Solution:
Step 1: Role of humus in soil.
Humus is important for agriculture because it improves soil structure, making it looser and better for plant roots to penetrate. It also enhances water retention and drainage in the soil, which is vital for plant growth.
Step 2: Nutrient supply.
Humus provides essential nutrients to the plants, such as nitrogen, phosphorus, and potassium, which are necessary for healthy plant growth. It also increases the soil’s ability to hold these nutrients, reducing the need for chemical fertilizers.

(iii)(a). In arid regions, trees are planted in rows perpendicular to wind direction.

Solution:
In arid regions, trees are planted perpendicular to the wind direction to reduce the wind speed and minimize soil erosion. This arrangement helps in reducing the loss of moisture from the soil by shielding the land from strong winds, which are common in such areas.

(b). Black soil does not get leached.

Solution:
Black soil, also known as regur soil, is rich in clay content, which has high water retention capacity. This characteristic helps in preventing the leaching of nutrients as the water does not drain quickly through the soil. Instead, it retains the nutrients, making it fertile.

(c). It is difficult to grow rice in red soil without the help of irrigation.

Solution:
Red soil is typically low in water retention capacity, making it prone to drying out quickly. As rice requires a lot of water for its growth, the lack of moisture retention in red soil makes it difficult to grow rice without irrigation. The soil must be constantly moist for optimal rice growth.

(iv)(a). What is soil conservation?

Solution:
Soil conservation refers to the set of practices that are designed to protect the soil from degradation, erosion, and loss of fertility. This is achieved by preventing the loss of soil through natural elements such as wind and water and by maintaining soil health for future agricultural productivity.
Step 1: Prevention of soil erosion.
Soil erosion is the removal of the topsoil layer due to wind, water, or human activity. Soil conservation practices prevent this erosion by stabilizing the soil. For example, planting trees or cover crops helps in reducing wind and water erosion.
Step 2: Maintenance of soil fertility.
Soil conservation also involves the preservation of soil fertility, which is essential for successful agriculture. Techniques such as crop rotation, the use of organic fertilizers, and minimizing the use of chemical fertilizers help maintain the nutrient levels in the soil.
Step 3: Sustainable land use.
Soil conservation practices emphasize sustainable land use, ensuring that the land remains productive over the long term. This can include proper water management, controlled grazing, and preventing over-cultivation or deforestation.

(b). Name two areas in north India where soil conservation is required.

Solution:
Soil conservation is crucial in areas that are prone to soil erosion, often due to heavy rainfall, hilly terrain, or deforestation. In north India, two areas where soil conservation is particularly needed are:
Step 1: Himachal Pradesh.
Himachal Pradesh is a mountainous state that faces severe soil erosion due to its steep terrain and heavy rainfall during the monsoon season. Soil conservation techniques such as terracing and afforestation are needed to reduce erosion and preserve soil fertility. The region’s agriculture is dependent on the fertile soil, making soil conservation efforts vital for sustaining crop production and reducing landslides.
Step 2: Uttarakhand.
Uttarakhand, known for its hilly terrain and rich biodiversity, is another region in north India

where soil conservation is required. The deforestation and overgrazing in the state have caused significant soil erosion. Moreover, heavy rains during the monsoon further contribute to the soil loss. To prevent this, methods such as contour ploughing, terracing, and

(c). Name two methods of soil conservation practised in India.

Solution:
Soil conservation methods are used across India to reduce soil erosion, improve soil fertility, and enhance agricultural productivity. Two widely practised methods of soil conservation in India are:
Step 1: Terracing.
Terracing is a method used in hilly areas where the land is divided into a series of flat steps. This helps to reduce the speed of water runoff, preventing soil erosion. The flat surface allows for better water retention and provides more space for crops to grow. Terracing is common in the hilly regions of Himachal Pradesh, Uttarakhand, and parts of the Western Ghats.
Step 2: Contour Ploughing.
Contour ploughing involves ploughing the land along the contours of the slopes, rather than up and down the hill. This helps to reduce water runoff and allows the soil to retain moisture better. It also reduces the erosion of topsoil and is commonly practised in regions with gentle slopes. This method is used in states like Madhya Pradesh, Maharashtra, and Andhra Pradesh.

5(i). Why are forests important for the Indian economy?

Solution:
Step 1: Understanding the importance of forests.
Forests play a crucial role in the Indian economy by contributing to a wide range of sectors including agriculture, industry, and tourism. They provide essential resources such as timber, fuelwood, medicinal plants, and non-timber products.
Step 2: Forests’ role in environmental protection.
Forests also help in maintaining environmental stability. They prevent soil erosion, regulate the water cycle, and act as carbon sinks, contributing to the reduction of climate change impacts.
Step 3: Contribution to employment and rural economy.
Forests provide direct employment to millions of people, especially in rural areas, through activities such as wood collection, forest-based crafts, and ecotourism.
Step 4: Forests and biodiversity.
India’s forests are rich in biodiversity, supporting a wide range of wildlife. This biodiversity is not only essential for ecological balance but also forms the basis for eco-tourism, which contributes significantly to the economy.

(ii)(a). A sustainable system of managing a piece of land through combined production of agricultural crops, forest crops, and animal rearing.

Solution:
The system described in the question is known as Agroforestry. Agroforestry is a sustainable land management practice that integrates trees with agricultural crops and livestock on the same land. This system is designed to optimize the use of land and resources in a way that benefits both the environment and the people involved in farming.
Step 1: Agroforestry’s role in land management.
Agroforestry systems involve cultivating crops (food crops or forest crops), managing trees or forests, and rearing livestock together. This combination maximizes land use efficiency, as trees provide shade for crops, preventing soil erosion and improving water retention. Additionally, trees contribute organic matter to the soil, enhancing soil fertility over time.
Step 2: Environmental benefits.
Agroforestry practices have significant environmental benefits, such as improving biodiversity, reducing soil erosion, and increasing carbon sequestration. The integration of trees in farming systems helps to conserve the ecosystem, promoting a healthy environment while still being productive.
Step 3: Economic benefits.
For farmers, agroforestry provides diversified income sources from crops, timber, fruits, and livestock, making them less dependent on a single crop. The practice also helps in reducing the need for chemical fertilizers and pesticides, lowering the cost of production and improving long-term soil health.

(b). Planting of trees along the side of roads, railway lines and on hill slopes.

Solution:
The practice of planting trees along the side of roads, railway lines, and on hill slopes is known as Afforestation. This process involves the establishment of forests or planting treesin areas where there were no previous forests or trees. It is often carried out in areas that are prone to soil erosion or where land restoration is required.
Step 1: Preventing soil erosion.
One of the primary benefits of afforestation is its ability to prevent soil erosion. Trees planted on hill slopes and along roadsides act as a barrier against wind and water, reducing the velocity of runoff. This helps in stabilizing the soil and preventing it from being washed away during heavy rains, which is particularly important in regions with steep terrain.
Step 2: Improving air quality.
Afforestation also improves air quality. Trees act as natural air filters, absorbing carbon dioxide and releasing oxygen. The increase in greenery around roadways and railway lines contributes to the reduction of air pollution, making the environment healthier for people living in these areas.
Step 3: Enhancing biodiversity.
Afforestation promotes biodiversity by providing habitats for wildlife, thus improving the ecological balance. Trees along roads and railway lines also provide a natural corridor for animals to move, ensuring that wildlife can thrive and migrate across landscapes that have been fragmented by human activity.
Step 4: Aesthetic value and climate regulation.
Additionally, afforestation along these areas helps improve the aesthetic value of the environment. The greenery also plays a role in regulating the microclimate by providing shade, reducing heat, and improving the overall climatic conditions of the area.

(iii)(a). Name the type of vegetation seen in the given image.

Solution:
The type of vegetation seen in the above image is Mangrove Forest. Mangrove forests are specialized ecosystems found along coastal areas where saltwater and freshwater mix. These forests are primarily located in the intertidal zones of tropical and subtropical regions. Mangrove trees are uniquely adapted to survive in saline, waterlogged soils with fluctuating tides.
Step 1: Characteristics of Mangrove Forests.
Mangrove forests have unique characteristics that enable them to thrive in challenging environments. The vegetation seen in the image is dominated by mangrove trees, which are adapted to brackish water and tidal flooding. These forests help in preventing coastal erosion, supporting marine biodiversity, and acting as a natural barrier during storms and cyclones.
Step 2: Importance of Mangrove Forests.
Mangrove forests are crucial for the ecosystem as they serve as nurseries for many marine species, provide habitat for a wide range of wildlife, and help protect coastal areas from storm surges and erosion. The roots of mangrove trees stabilize the sediment, reducing the risk of soil erosion and protecting the shoreline.

(b). Mention one adaptive feature of the trees of this vegetation.

Solution:
One of the most important adaptive features of mangrove trees is the presence of aerial roots, also known as pneumatophores. These roots grow above the surface of the soil or water and allow the tree to take in oxygen from the air. The soil in which mangroves grow is often waterlogged and lacks oxygen, so aerial roots enable the mangrove trees to survive in such low-oxygen conditions.
Step 1: Function of Aerial Roots.
The aerial roots of mangrove trees grow upwards from the ground and extend above the water’s surface, allowing the plant to obtain oxygen directly from the air. This adaptation is critical in areas where the soil remains submerged for long periods, as it ensures that the tree can breathe and survive in waterlogged environments.
Step 2: Other Adaptations.
In addition to aerial roots, mangrove trees also have specialized salt glands that help them excrete excess salt. This allows them to survive in the saline environment of coastal waters. The roots of mangrove trees also serve to stabilize the soil and reduce erosion, acting as a natural barrier to protect the coastline.

(c). Name a region where this type of vegetation is commonly found in India.

Solution:
Mangrove forests are commonly found in the Sundarbans region, located in the coastal areas of West Bengal, India. The Sundarbans is the largest mangrove forest in India and one of the largest in the world. It is a UNESCO World Heritage Site and is known for its rich biodiversity, including the Bengal tiger, and its role in protecting the coastline from natural disasters such as storms and cyclones.
Step 1: Features of the Sundarbans.
The Sundarbans is a vast network of tidal waterways, mudflats, and islands, where mangrove forests thrive. The region is critical for both local communities and wildlife, offering essential ecosystem services such as coastal protection, carbon sequestration, and providing a breeding ground for marine species.
Step 2: Importance of Mangrove Forests in Sundarbans.
The mangrove forests of the Sundarbans play a vital role in maintaining the balance of the ecosystem. They act as a buffer against the encroachment of seawater, prevent soil erosion, and support rich biodiversity, including endangered species like the Bengal tiger. The region is also home to numerous species of fish, crustaceans, and migratory birds.The Sundarbans is a vast network of tidal waterways, mudflats, and islands, where mangrove forests thrive. The region is critical for both local communities and wildlife, offering essential ecosystem services such as coastal protection, carbon sequestration, and providing a breeding ground for marine species.

(iv)(a). Desert vegetation has long roots.

Solution:
Desert vegetation typically has long roots as an adaptation to survive in the harsh conditions of arid regions. These long roots allow the plants to reach deep underground water sources, which are essential for their survival in the absence of regular rainfall.
Step 1: Adaptation to limited water supply.
In deserts, water is scarce, so plants need to adapt to these conditions. Long roots enable the plants to tap into groundwater, which is often deep beneath the surface. This adaptation is crucial for maintaining the plant’s water supply throughout the year.
Step 2: Function of deep roots.
Besides accessing water, deep roots also anchor the plants firmly in the soil, helping them withstand strong winds and preventing them from being uprooted in the loose, sandy soils typical of deserts.

(b). At higher altitudes, trees are often conical in shape.

Solution:
At higher altitudes, trees are often conical in shape as an adaptation to the cold and heavy snowfall. The conical shape allows snow to slide off the tree more easily, preventing the branches from breaking under the weight of snow accumulation.
Step 1: Protection from snow.
In regions with heavy snowfall, the conical shape ensures that the snow doesn’t accumulate on the branches, which could cause them to bend or break. Instead, the snow slides off, preserving the structural integrity of the tree.
Step 2: Wind resistance.
The conical shape also helps reduce the wind resistance. In high-altitude areas, where wind speeds are often strong, the narrow top and wide base of conical trees reduce wind drag, preventing damage to the tree’s structure.
Step 3: Adaptation to extreme conditions.
This adaptation allows trees to thrive in the cold, windy, and snowy environments of higher altitudes, where trees with broader canopies might struggle to survive.

(c). Tropical Monsoon Forests are also called ’Tropical Deciduous Forests’.

Solution:
Tropical Monsoon Forests are often referred to as Tropical Deciduous Forests because of their characteristic seasonal behavior. These forests experience distinct wet and dry seasons, and during the dry season, most of the trees shed their leaves to conserve water. This leaf-shedding process is what classifies them as deciduous forests.
Step 1: Seasonal shedding of leaves.
In tropical monsoon forests, trees lose their leaves in the dry season as a response to water scarcity. This is a characteristic feature of deciduous forests, which shed their leaves annually in response to the changing weather conditions.
Step 2: Adaptation to monsoon climates.
Tropical monsoon forests are adapted to regions with distinct wet and dry seasons, typical of tropical regions. The monsoon season provides a significant amount of rainfall, but during the dry season, the lack of water causes many trees to shed their leaves, thus adapting to the environment’s seasonal changes.
Step 3: Biodiversity and productivity.
Despite the dry season, tropical monsoon forests remain highly productive and biodiverse, supporting a wide range of plant and animal species. The seasonal shedding of leaves helps conserve moisture and protect the trees during the harsh dry periods.

7(a). Raghu wants to irrigate his large field in a manner that will ensure uniform water distribution across the field along with water conservation. Name the irrigation method that will be suitable as per his need.

Solution:
The irrigation method that will be suitable for ensuring uniform water distribution and water conservation in Raghu’s large field is the Drip Irrigation method.
Step 1: What is Drip Irrigation?
Drip irrigation is a highly efficient method of irrigation that delivers water directly to the roots of plants through a network of pipes, tubes, and emitters. It involves slow, controlled release of water, which minimizes evaporation and ensures that water is distributed evenly across the field.
Step 2: Why is it suitable?
For Raghu’s large field, drip irrigation ensures uniform water distribution, as it supplies water directly to the plant roots. It also reduces water wastage, as water is applied only where it is needed, avoiding run-off and evaporation, making it highly suitable for large-scale, water-efficient farming.

(b). How will the method of irrigation mentioned by you in (a) above help to conserve water?

Solution:
Drip irrigation helps conserve water in the following ways:
Step 1: Reduced evaporation.
Unlike traditional surface irrigation methods, drip irrigation delivers water directly to the plant roots, reducing the surface area exposed to the air. This minimizes evaporation, which is a significant source of water loss in open irrigation systems, especially in hot climates. Step 2: Precise water application.
Drip irrigation ensures that water is delivered only to the root zone of plants, reducing runoff and water wastage. This precise application ensures that plants receive just the right amount of water, avoiding over-irrigation and under-irrigation.
Step 3: Water savings.
This method can save up to 50% of the water compared to traditional irrigation methods, making it ideal for areas where water conservation is crucial. It ensures that water is used efficiently and effectively, reducing the need for additional water sources.
Step 4: Suitability for arid regions.
Drip irrigation is especially beneficial in arid and semi-arid regions, where water is scarce. The method is designed to maximize water use efficiency, making it suitable for large fields in such regions.

ii. What is the difference between Inundation canals and Perennial canals?

Solution:
Step 1: Define Inundation Canals.
Inundation canals are those canals which are filled with water only during the rainy season or when the river is in flood. These canals do not have a regular water supply and are often dependent on seasonal variations.
Step 2: Define Perennial Canals.
Perennial canals, on the other hand, are supplied with water throughout the year. They are connected to a consistent water source, such as a dam or a reservoir, ensuring a continuous flow of water irrespective of seasonal changes.
Step 3: Key Differences.
- Water Supply: Inundation canals rely on seasonal flooding for water, whereas perennial canals have a continuous water supply.
- Reliability: Inundation canals are unreliable for irrigation, while perennial canals provide a dependable source of water throughout the year.
- Usefulness: Perennial canals are more efficient for agriculture, providing consistent water supply for crops in all seasons.

iii. (a) How is ’groundwater’ different from ’surface water’?

Solution:
Step 1: Definition of Groundwater.
Groundwater is the water stored beneath the Earth’s surface, in aquifers, and is accessed through wells or natural springs. It is generally replenished by rainfall and seepage.
Step 2: Definition of Surface Water.
Surface water refers to the water found in rivers, lakes, ponds, and other bodies of water above the Earth’s surface. It is primarily replenished by precipitation and runoff from higher altitudes.
Step 3: Key Differences.
- Groundwater is stored underground, while surface water is found above ground.
- Groundwater is more stable and less prone to evaporation compared to surface water, which is more vulnerable to seasonal variations and human activities.

iii. (b) Why is the groundwater level rapidly declining in India?

Solution:
Step 1: Over-extraction of Groundwater.
The rapid decline in groundwater levels in India is primarily due to the over-extraction of water for agricultural, industrial, and domestic use, far exceeding the natural replenishment rate.
Step 2: Lack of Rainwater Harvesting.
In many areas, there is a lack of adequate rainwater harvesting techniques, which leads to insufficient recharge of groundwater aquifers during monsoon seasons.
Step 3: Poor Water Management.
Additionally, inefficient irrigation practices, especially in agriculture, have exacerbated the problem by using large amounts of water without effective conservation or management methods.

iii. (c) Name one conservation measure that will help in recharging the groundwater.

Solution:
Step 1: Rainwater Harvesting.
One effective conservation measure to recharge groundwater is rainwater harvesting. This involves collecting rainwater from rooftops or other surfaces and storing it in tanks or underground reservoirs.
Step 2: Benefits of Rainwater Harvesting.
Rainwater harvesting helps in replenishing groundwater aquifers, especially during the monsoon season, ensuring a steady supply of water throughout the year and reducing the pressure on existing water sources.

iv. (a) Wells are a common means of irrigation in Northern India.

Solution:
Step 1: Availability of Groundwater.
Wells are commonly used in Northern India for irrigation because the region has an abundant supply of groundwater, which is easily accessible through wells.
Step 2: Convenience and Cost-Effectiveness.
Wells are relatively easy to construct and maintain, making them a convenient and cost-effective source of irrigation for small-scale farmers in Northern India, especially in regions where surface water is scarce.

iv. (b) Many state governments have restricted the use of tubewells.

Solution:
Step 1: Groundwater Depletion.
State governments have restricted the use of tubewells to prevent over-extraction of groundwater. Excessive use of tubewells has led to a significant decline in the groundwater table, which is unsustainable.
Step 2: Environmental Impact.
Overuse of tubewells can cause long-term environmental issues, such as the drying up of wells, loss of natural water sources, and damage to ecosystems. To preserve water resources, many governments have imposed restrictions on their usage.

iv. (c) Tank irrigation is a popular method of irrigation used in Karnataka.

Solution:
Step 1: Traditional Water Storage.
Tank irrigation is a popular method in Karnataka because the region has a rich history of building tanks and reservoirs for water storage. These tanks are filled during the rainy season and used for irrigation during dry periods.
Step 2: Efficient Water Use.
Tank irrigation ensures efficient water distribution to agricultural fields. Tanks are well-suited for regions with uneven rainfall, as they store water from monsoon rains and provide a reliable source for irrigation during drier months.

8(a). How is ’groundwater’ different from ’surface water’?

Solution:
Groundwater and surface water are two different types of water sources that differ in terms of location, availability, and characteristics: Step 1: Groundwater.
Groundwater refers to water that is found beneath the Earth’s surface in aquifers, which are layers of water-bearing rock or sediment. It is stored in underground reservoirs and can be accessed through wells, springs, or boreholes. Groundwater is typically more stable in terms of availability and is an important source of drinking water and irrigation in many regions.
Step 2: Surface Water.
Surface water, on the other hand, is water found on the Earth’s surface, such as rivers, lakes, ponds, and reservoirs. It is subject to fluctuations in availability due to seasonal changes, rainfall patterns, and human activities. Surface water is more vulnerable to pollution and contamination from various sources like industrial waste and runoff.
Step 3: Key Differences.
- Groundwater is typically more protected from contamination as it is underground, while surface water is more exposed and prone to contamination. - Groundwater is usually used for long-term water supply, whereas surface water is often used for immediate or short-term needs like irrigation or industrial processes.

ii. (a) Umesh and Sagar are employed in iron ore mines in two different districts of Odisha. What are their possible places of work?

Solution:
Step 1: Iron Ore Mining in Odisha.
Odisha is one of the leading producers of iron ore in India. Two prominent districts in Odisha known for iron ore mining are Keonjhar and Sundargarh.
Step 2: Possible Places of Work.
- Umesh could be employed in the iron ore mines of Keonjhar, a major iron ore mining region.
- Sagar could be employed in the iron ore mines of Sundargarh, another district rich in iron ore deposits.

ii. (b) State any two uses of copper.

Solution:
Step 1: Electrical Conductivity.
Copper is widely used in electrical wiring and cables due to its excellent electrical conductivity. It allows efficient transmission of electricity with minimal loss.
Step 2: Manufacturing Alloys.
Copper is used in the production of various alloys, such as bronze and brass. These alloys have applications in making coins, jewelry, and machinery parts.

iii. (a) The Bhakra Nangal project is a joint venture of which state governments?

Solution:
Step 1: Joint Venture.
The Bhakra Nangal project is a joint venture between the state governments of Punjab and Himachal Pradesh.
Step 2: Project Collaboration.
This project was developed for the purpose of irrigation and hydropower generation and has greatly contributed to the development of the region.

iii. (b) Name the river on which this project is based.

Solution:
Step 1: River Name.
The Bhakra Nangal project is based on the Sutlej River, which is one of the major rivers of the northern Indian region.
Step 2: Role of Sutlej River.
The Sutlej River provides the necessary water resources for the project, facilitating both irrigation and power generation.

iii. (c) Mention two benefits of the Bhakra Nangal project.

Solution:
Step 1: Benefit 1 - Irrigation.
One of the key benefits of the Bhakra Nangal project is its role in irrigation. The project has helped in the irrigation of vast agricultural lands in Punjab, Haryana, and Rajasthan, boosting agricultural productivity.
Step 2: Benefit 2 - Hydroelectric Power Generation
Another important benefit of the Bhakra Nangal project is the generation of hydroelectric power. The project has a hydroelectric power station that contributes to the region’s electricity supply.

iv. (a) The renewable energy produced by the natural rise and fall of ocean waters.

Solution:
Step 1: Definition of Tidal Energy.
Tidal energy is a form of renewable energy that is generated by the natural rise and fall of ocean waters. This movement of water is caused by the gravitational pull of the moon and the sun on the Earth’s oceans, which creates tides.
Step 2: How Tidal Energy Works.
Tidal energy is harnessed using tidal turbines, which are similar to underwater wind turbines. The turbines capture the energy produced by the moving water during the high and low tide cycles. The kinetic energy of the moving water is converted into electrical energy.
Step 3: Tidal Power Plants.
There are two main types of tidal power plants: tidal stream systems and tidal range systems. Tidal stream systems use the flow of water, while tidal range systems use the difference in water levels between high and low tides to generate power.
Step 4: Environmental Impact and Benefits.
Tidal energy is considered a clean and renewable source of energy because it does not produce greenhouse gases or pollution. Additionally, it is highly predictable, making it a reliable source of energy. However, its use is limited to coastal areas, and the construction of tidal power plants can affect marine ecosystems.

iv. (b) An ore of aluminium.

Solution:
Step 1: What is Bauxite?
Bauxite is the primary ore from which aluminium is extracted. It is a reddish-brown rock that contains a high percentage of aluminium minerals, such as gibbsite, boehmite, and diaspore. It is found in tropical and subtropical regions, particularly in countries like Australia, Brazil, and Guinea.
Step 2: The Extraction Process.
Bauxite is processed through the Bayer Process, which involves refining the ore to obtain alumina (aluminium oxide). This alumina is then reduced to aluminium metal through the Hall-H´eroult process, which involves electrolyzing the alumina in molten cryolite.
Step 3: Importance of Bauxite.
Bauxite is the most important source of aluminium, and the demand for aluminium has grown due to its wide range of applications. Aluminium is lightweight, strong, and corrosion-resistant, making it ideal for use in industries such as aerospace, transportation, packaging, and construction.
Step 4: Environmental Impact.
While bauxite extraction and alumina refining can have environmental impacts, such as habitat destruction and water contamination, modern mining techniques aim to reduce these effects. The aluminium industry is also working towards recycling aluminium to minimize the need for new bauxite mining.

iv. (c) A mineral that is used to make steel strong and resistant to rusting.

Solution:
Step 1: What is Chromite?
Chromite is a mineral composed of iron chromium oxide (FeCr2O4). It is the primary ore of chromium, a metal that is widely used in steel production. Chromite is found in large deposits in countries like South Africa, Kazakhstan, and India.
Step 2: Role of Chromium in Steel.
Chromium is added to steel to improve its strength, hardness, and resistance to corrosion. Steel containing chromium is known as stainless steel, which is highly resistant to rusting and staining. The addition of chromium also enhances the steel’s ability to withstand high temperatures.
Step 3: Benefits of Chromium in Steel.
Chromium forms a thin layer of chromium oxide on the surface of the steel, which acts as a protective barrier against rust and corrosion. This makes stainless steel ideal for use in environments where exposure to moisture and chemicals is common, such as in kitchen appliances, medical equipment, and construction materials.
Step 4: Environmental Considerations.
The extraction of chromite and the production of chromium can have environmental impacts, including habitat destruction and pollution. However, chromium is an essential material for manufacturing stainless steel, which has numerous applications in various industries.

9(i). Differentiate between subsistence farming and commercial farming.

Solution:
Subsistence Farming:
Subsistence farming is a type of farming where the primary goal is to grow food and other products for the farmer’s own consumption. It involves small-scale production and is mainly focused on feeding the farmer’s family or community rather than producing surplus for sale. In subsistence farming, the farmer uses traditional methods, and the land is often worked by hand or with simple tools.
Commercial Farming:
Commercial farming, on the other hand, involves the large-scale production of crops and livestock for sale in the market. The main objective is to generate profit through the sale of agricultural products. Commercial farming uses advanced technology, machinery, and high-input methods to maximize productivity and efficiency. The crops grown are typically for commercial purposes, such as export or local sale, rather than for personal consumption.
Key Differences:
- Purpose: Subsistence farming is for self-consumption, while commercial farming is for profit generation.
- Scale: Subsistence farming is small-scale, whereas commercial farming is large-scale. - Technology: Subsistence farming uses traditional methods, while commercial farming uses modern technology and machinery.
- Market Focus: Commercial farming is focused on selling products in the market, while subsistence farming focuses on local consumption.

ii. (a) Name a state that leads in the production of jute.

Solution:
The state that leads in the production of jute is West Bengal.
Step 1: Jute Production in India.
West Bengal is the largest producer of jute in India, contributing a significant percentage of the total jute production in the country. The state has favorable climatic conditions and the required infrastructure to support large-scale jute farming and processing.

ii. (b) Mention a geographical factor that is responsible for the state mentioned in (a) above being the leading producer of jute.

Solution:
Step 1: Geographical Factor - Favorable Climate.
The geographical factor responsible for West Bengal being the leading producer of jute is its favorable climate. The state has a humid tropical climate, which is ideal for the cultivation of jute. The warm and wet weather, especially during the monsoon season, provides the necessary conditions for jute to thrive.
Step 2: Soil Conditions.
Additionally, the alluvial soil found in the region, particularly along the banks of the Ganges and other rivers, is rich in nutrients and supports the healthy growth of jute crops.

iii. (a) Why are Silver Oak trees and Cardamom trees planted in coffee plantations along with the coffee plants?

Solution:
Step 1: Role of Silver Oak Trees.
Silver Oak trees are planted in coffee plantations to provide shade for the coffee plants. Coffee plants thrive in shaded conditions, especially in regions with direct sunlight. Silver Oak trees help in maintaining an optimal microclimate for coffee cultivation by blocking the harsh sun rays and providing protection from wind.
Step 2: Role of Cardamom Plants.
Cardamom trees are often planted in coffee plantations because they grow well under similar climatic conditions as coffee. Additionally, they help in improving the biodiversity of the plantation, preventing soil erosion, and enriching the soil with organic matter, all of which benefit coffee growth.

iii. (b) State two climatic conditions that favour the cultivation of coffee.

Solution:
Step 1: Temperature Range.
Coffee plants require a warm and temperate climate. The ideal temperature range for coffee cultivation is between 18°C to 24°C, as this range promotes optimal growth and bean production.
Step 2: Rainfall and Humidity.
Coffee plants require substantial rainfall, typically between 1500 mm to 2500 mm annually. The rainfall should be evenly distributed throughout the year to ensure consistent growth. Additionally, a humid environment aids in the proper development of coffee plants.

iv. (a) Name the cropping season in which Bajra is grown.

Solution:
Step 1: Bajra’s Cropping Season.
Bajra, also known as pearl millet, is primarily grown during the Kharif season. The Kharif season in India generally runs from June to September, coinciding with the monsoon period.
Step 2: Why Kharif Season?
Bajra requires warm temperatures and moderate rainfall, both of which are provided during the Kharif season. The crop thrives in these conditions and is harvested before the winter season sets in

iv. (b) Why is wheat not cultivated extensively in West Bengal and the extreme southern states of India?

Solution:
Step 1: Temperature Requirements for Wheat.
Wheat requires a cool climate for proper growth, with a temperature range of 10°C to 15°C. West Bengal and the extreme southern states of India experience higher temperatures, particularly during the wheat growing season, which is not suitable for wheat cultivation.
Step 2: Soil and Irrigation Constraints.
Additionally, the soils in these regions are not always ideal for wheat, and the lack of sufficient irrigation facilities further limits its cultivation. Rice is more suited to the climate and soil of West Bengal and southern India, where water availability is higher.

iv. (c) Why is the cultivation of soybean gaining popularity in recent times?

Solution:
Step 1: Nutritional Benefits.
Soybean cultivation is gaining popularity due to its high protein content and nutritional benefits. It is a rich source of plant-based protein, making it a key component in vegetarian and vegan diets.
Step 2: Demand for Soybean Products
The increasing demand for soybean oil, tofu, soy milk, and other processed products has contributed to its popularity. Additionally, soybean is used in animal feed, which has driven its cultivation in agriculture.
Step 3: Adaptability to Varied Climates.
Soybean is a versatile crop that can be cultivated in a variety of climates, which makes it an attractive option for farmers looking to diversify their crops and increase yields.

10(i). ‘Not all areas of India are suitable for establishing a large-scale industry.’ Give two reasons for the above statement.

Solution:
The establishment of large-scale industries in India is limited by several geographical and socio-economic factors. Two key reasons are:
Step 1: Availability of Raw Materials. Industries require a consistent supply of raw materials, which may not be available in all parts of India. For example, industries like steel and cement are usually located near areas that have abundant deposits of iron ore, coal, or limestone. Lack of raw materials in certain regions can make them unsuitable for large-scale industries.
Step 2: Infrastructure and Connectivity.
Certain regions of India lack the necessary infrastructure, such as transportation networks, electricity, and water supply, which are crucial for large-scale industries. Poor infrastructure can increase operational costs, making it difficult to establish and run industries in such areas.

(ii). ‘The contribution of the electronics industry is crucial for the progress and development of the Indian economy.’ State two arguments in favour of this statement.

Solution:
The electronics industry plays a vital role in the progress and development of the Indian economy. Two key arguments in favor of this statement are:
Step 1: Boost to Technological Innovation.
The electronics industry drives technological innovation in India by producing advanced products like mobile phones, computers, and consumer electronics. This, in turn, promotes the growth of other industries such as information technology (IT), telecommunications, and automation, contributing to the overall economic development.
Step 2: Employment Generation and Export Potential.
The electronics industry generates significant employment opportunities in manufacturing, research and development, and sales. Additionally, India’s electronics sector has a huge export potential, as demand for electronic goods continues to rise globally, contributing to foreign exchange earnings and enhancing India’s position in the global market.

iii. (a) Work in sugar mills is a seasonal activity. .

Solution:
Geographical Reason:
Work in sugar mills is seasonal because sugarcane, the raw material for sugar production, is harvested once a year, typically during the winter and early spring months. Sugarcane cultivation depends on the monsoon rains, and the harvest season usually aligns with the sugarcane growth cycle. This creates a peak season for milling operations, making it a seasonal activity

iii. (b) The cotton textile industry is widely distributed in India.

Solution:
Geographical Reason:
The cotton textile industry is widely distributed in India due to the availability of raw cotton, which is grown in various regions, particularly in states like Gujarat, Maharashtra, and Tamil Nadu. Additionally, India’s vast network of transport infrastructure (roads, railways, ports) facilitates the movement of raw materials and finished goods. The presence of cheap labor and a growing domestic market also contribute to the widespread distribution of cotton textile mills across the country.

iii. (c) Vishakhapatnam steel plant has a unique locational advantage that enables it to procure raw materials easily and market the finished products with ease.

Solution:
Geographical Reason:
The Vishakhapatnam steel plant enjoys a unique locational advantage because it is located on the eastern coast of India, close to major ports like the Vishakhapatnam Port. This allows easy access to imported raw materials such as coal and iron ore. Additionally, the plant’s location on the coast facilitates the export of finished steel products to international markets, making it a strategic hub for steel production and trade.

iv. (a) Name the oldest iron and steel industry of India.

Solution:
The oldest iron and steel industry of India is Tata Steel, formerly known as Tata Iron and Steel Company (TISCO). It was established in 1907 by Jamsetji Tata, marking a significant milestone in India’s industrial history.
Step 1: Significance of Tata Steel.
Tata Steel is one of the largest steel producers in the world and has played a pivotal role in the development of the Indian economy. It laid the foundation for industrial growth and contributed significantly to the establishment of India’s steel industry. Step 2: Legacy.
The establishment of Tata Steel was a turning point, as it not only provided India with a domestic source of iron and steel but also helped in the development of other industries in India, such as transportation and infrastructure.

iv. (b) Where is it located?

Solution:
Tata Steel is located in Jamshedpur, in the state of Jharkhand, India. The city is strategically located near the rich deposits of iron ore and coal, which are essential raw materials for the steel industry.
Step 1: Why Jamshedpur?
Jamshedpur, also known as the ”Steel City,” was chosen for its proximity to natural resources such as iron ore, coal, and limestone, making it an ideal location for setting up a steel plant. The town also had access to transportation networks, facilitating the easy movement of raw materials and finished products.
Step 2: The Development of Jamshedpur.
Jamshedpur’s establishment as a steel city also led to the development of associated infrastructure, including housing, schools, hospitals, and recreational facilities, contributing to the city’s urbanization and growth

iv. (c) Name a centre from where it gets its coal supply.

Solution:
Tata Steel gets its coal supply primarily from Jharia, a coal mining area in the state of Jharkhand, India. Jharia is one of the richest coalfields in India and has been supplying coal to Tata Steel for decades.
Step 1: Coal Mines in Jharia.
Jharia is located near Dhanbad, known as the ”Coal Capital of India.” The coal from Jharia is of high quality, particularly coking coal, which is essential for steel production in Tata Steel’s plant.
Step 2: Importance of Jharia.
The proximity of Jharia coalfields to Tata Steel’s plant in Jamshedpur makes it an ideal source of coal, reducing transportation costs and ensuring a steady supply of coal for production

11(i). Inland water transport is more popular in Northern India as compared to Peninsular India. Give two reasons.

Solution:
Inland water transport is more popular in Northern India for several reasons: Step 1: Availability of navigable rivers.
Northern India has many long and wide rivers like the Ganga, Yamuna, and Brahmaputra that are navigable, providing an efficient means of transport for goods and people. These rivers are used for inland water transport, especially in regions with limited road or rail infrastructure.
Step 2: Flat terrain and low population density.
The plains of Northern India have a relatively flat terrain, which makes it easier to establish and maintain waterways. In contrast, the Peninsular region of India has rugged terrain with hills and plateaus, which is less suitable for the development of inland waterways. Additionally, the northern plains have a lower population density in some regions, making water transport more viable.

(ii). What is the purpose of developing the Golden Quadrilateral in India?

Solution:
The purpose of developing the Golden Quadrilateral in India is to improve connectivity between the major cities of the country and boost economic development.
Step 1: Economic Growth and Trade.
The Golden Quadrilateral is a network of highways connecting the four major metros of India – Delhi, Mumbai, Chennai, and Kolkata. This project aims to facilitate faster movement of goods and people, promoting trade, commerce, and industrial growth. It reduces travel time and costs, making India’s economy more competitive globally.
Step 2: Infrastructure Improvement.
By improving the road infrastructure, the Golden Quadrilateral promotes better access to rural areas, enhances tourism, and improves access to healthcare and education. It also supports the smooth movement of agricultural produce, reducing wastage and improving food security.

iii. (a) Mr. Kumar’s father wanted to travel comfortably to Patna to stay with his brother for a week.

Solution:
The most likely mode of transport for Mr. Kumar’s father would be train. Mr. Kumar’s father would prefer a comfortable journey, and traveling by train is ideal for long-distance travel such as Delhi to Patna. Trains offer comfortable seating, sleeper options, and dining facilities, making it suitable for a week-long stay. Additionally, trains are an economical and relaxing option for travel.

iii. (b) Mr. Kumar’s son had to attend a meeting in Ahmedabad that very evening.

Solution:
The most likely mode of transport for Mr. Kumar’s son would be flight. Since Mr. Kumar’s son needs to attend a meeting in Ahmedabad that evening, air travel would be the quickest and most efficient option. Flights are ideal for traveling long distances in a short period, allowing him to arrive on time for the evening meeting.

iii. (c) Mr. Kumar’s daughter had to meet her friend who lives in the same city, taking with her some fresh vegetables grown in their kitchen garden.

Solution:
The most likely mode of transport for Mr. Kumar’s daughter would be walking or bicycle. Since the friend lives in the same city and the purpose of the travel is personal, a short-distance mode of transport like walking or cycling would be the most practical and eco-friendly choice. Additionally, taking fresh vegetables along with her makes walking or cycling more convenient.

iv. (a) The presence of a number of ports has strengthened the transport sector of India.

Solution:
Geographical Reason:
India has a long coastline along the Arabian Sea and the Bay of Bengal, with several natural harbors and ports. These ports facilitate both international and domestic trade, making sea transport an essential part of India’s economy. Ports like Mumbai, Chennai, Kolkata, and Kochi act as key gateways for importing and exporting goods, which strengthens the transport sector by providing easy access to global markets.

iv. (b) The number of airports in the country is on the rise.

Solution:
Geographical Reason:
India is experiencing rapid urbanization and economic growth, which has led to an increase in air travel demand. With the country’s vast size and a large population, airports are being developed in both metro and smaller cities to meet the needs of domestic and international travelers. Additionally, the growth of the tourism and business sectors has further contributed to the rise in the number of airports in India.

iv. (c) Railways are considered ideal for transportation of bulky goods over long distances.

Solution:
Geographical Reason:
Railways are ideal for transporting bulky goods over long distances because trains can carry a large amount of goods at once. India’s extensive railway network connects even the remotest areas, making it possible to transport heavy and bulky goods like coal, minerals, and agricultural products efficiently and at a lower cost compared to other modes of transport. Additionally, railways have a large carrying capacity, making them more suitable for long-distance transportation.

12(i). What impact does waste accumulation have on our environment?

Solution:
Waste accumulation has several negative impacts on the environment, which can affect both natural ecosystems and human health. Some of the key impacts are:
Step 1: Soil Pollution.
When waste is dumped improperly, it often ends up in landfills, where it can decompose and release harmful substances such as toxic chemicals, heavy metals, and plastics into the soil. This pollution can contaminate groundwater and reduce soil fertility, making it difficult for plants to grow and affecting agricultural productivity.
Step 2: Air Pollution.
Decomposing waste in landfills, particularly organic waste, produces methane gas, a potent greenhouse gas that contributes to climate change. Additionally, the burning of waste releases harmful pollutants into the air, leading to respiratory problems and contributing to global warming.
Step 3: Water Pollution.
Waste accumulation in water bodies, such as rivers, lakes, and oceans, leads to water contamination. This affects aquatic life and the overall ecosystem, as toxic chemicals and plastics can harm marine organisms. Polluted water also affects human communities that rely on these water sources for drinking, irrigation, and sanitation.
Step 4: Biodiversity Loss.
Waste accumulation can also contribute to the destruction of habitats. For example, plastics and other non-biodegradable waste can entangle animals or be ingested, leading to injury or death. This disrupts local biodiversity and harms the balance of ecosystems.

ii. (a) Name the waste management practice shown in the given picture.

Solution:
The waste management practice shown in the picture is Composting. Composting is a biological process where organic waste, such as kitchen scraps, leaves, and other biodegradable material, is broken down into humus by microorganisms. This practice helps in recycling organic waste into useful compost, which can be used as fertilizer for plants and gardens.

ii. (b) State two benefits of this waste management practice.

Solution:
Benefit 1: Reduces Landfill Waste.
Composting helps divert organic waste from landfills, thereby reducing the overall waste going to landfills. This helps in managing waste more sustainably.
Benefit 2: Improves Soil Fertility.
The compost produced through this process is rich in nutrients, which can be used to enrich the soil, improve plant growth, and enhance soil structure.

(iii). Udit wants his younger sister to bring about a few lifestyle changes to help her contribute towards a cleaner and healthier environment. Suggest three advice that Udit may provide her in this regard.

Solution:
To help his sister contribute towards a cleaner and healthier environment, Udit can suggest the following three lifestyle changes:
Step 1: Reduce, Reuse, Recycle.
Udit can advise his sister to reduce waste by buying fewer disposable items, reuse products whenever possible, and recycle materials like paper, plastic, and metal. This will reduce the amount of waste sent to landfills and contribute to conserving resources.
Step 2: Adopt a Sustainable Diet.
Udit can encourage his sister to eat a more plant-based diet, which has a lower environmental impact than consuming meat. By reducing meat consumption, especially from large-scale industrial farming, she can help reduce greenhouse gas emissions, water usage, and land degradation.
Step 3: Use Energy Efficient Appliances.
Udit can suggest that his sister switch to energy-efficient appliances, such as LED light bulbs, energy-saving air conditioners, and water heaters. She should also make an effort to turn off appliances when not in use, reducing unnecessary energy consumption and her carbon footprint

iv. (a) Waste should be segregated before disposal.

Solution:
The reason for segregating waste before disposal is to ensure that different types of waste, such as biodegradable, recyclable, and hazardous, are treated appropriately. Segregation allows for efficient recycling and composting of waste, reduces contamination, and minimizes the impact of hazardous materials on the environment.

iv. (b) Dumping could be harmful for the environment.

Solution:
The reason dumping waste can be harmful to the environment is that it leads to contamination of soil, water, and air. When waste is not properly managed, it can leach harmful chemicals into the ground, pollute water sources, and release toxic gases into the atmosphere, all of which have severe negative impacts on ecosystems and human health.

iv. (c) Radioactive waste is the most harmful waste.

Solution:
The reason radioactive waste is considered the most harmful is that it contains unstable isotopes that emit harmful radiation. This radiation can cause severe health issues, including cancer, genetic mutations, and even death. Additionally, radioactive waste remains hazardous for thousands of years, posing long-term environmental and health risks if not properly contained and disposed of.

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Last Updated on : March 26, 2026