In which of the following applications of Iron, rusting will occur most? Support your answer with valid reason

Class 10th Science, Question In which of the following applications of Iron, rusting will occur most? Support your answer with valid reason 

By
Rohit Sharma
-
science

Question: In which of the following applications of Iron, rusting will occur most? Support your answer with valid reason

The correct answer is :

C – Iron hinges on a gate –
Iron is in contact with both atmospheric oxygen and moisture/ water vapour

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