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Uses of metals and nonmetals

In which test...

Question

In which test tubes, the rusting of iron nail will take place?

A

a and d

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B

a, b and d

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C

b and c

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D

b, c and d

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Solution

The correct option is B a, b and d
Rusting of iron takes place only in presence of oxygen and water vapours. In figure (c) rusting is not possible as supply of oxygen is blocked by oil layer.

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Uses of metals and nonmetals

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