Question

5. How will you show experimentally that air and moisture are necessary for rusting?
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Answer 1

Answer:

Anhydrous calcium chloride is drying agent. So, it is added into test tube C to absorb all the moisture present in the air of test tube. ... But the nail present in test tube A rusts because in test tube A the nail was exposed to both air and water. This shows that for rusting of iron both air and water are necessary.

Answer 2

Explanation:

Anhydrous calcium chloride is drying agent. So, it is added into test tube C to absorb all the moisture present in the air of test tube. ... But the nail present in test tube A rusts because in test tube A the nail was exposed to both air and water. This shows that for rusting of iron both air and water are necessary.

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