Question 31:What is the predicted melting point if 1.2 g of salt is added to 10 mL of water? Justif…
Question: What is the role of concentrated Sulphuric acid when it is heated with Ethanol at 443 K. …
Question 30:In place of NaCl, if Henna had used glucose, what would have been the melting point of …
Question: Write the chemical reactions involved and name the reactions The correct answer is : CH3C…
Question: Give one use each of compounds A and B The correct answer is : Use of A- dil solution use…
Question 29:Why did Henna collect two sets of results? The correct answer is -two sets of reading h…
Question: Identify A and C The correct answer is : A – Ethanoic acid/ Or any other carboxylic acid …
Question 28:One temperature in the second set of results does not fit the pattern. Which temperatur…
Question: Why is damage to the ozone layer a cause for concern? What are its causes and what steps …
Question: The compass needle is displaced away from the wire The correct answer is : The deflection…
Question 27:The sample of a virus was tested and it was found to contain 20% adenine, 20% thymine, …
Question: Magnitude of electric current in wire is increased. The correct answer is : The deflectio…
