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Question

Conditions necessary for rusting iron are
air
moisture
presence of nitrogen
exposed surface of iron

A

exposed surface of iron

B

moisture

C

air

D

presence of nitrogen

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Solution

Verified by Toppr

The correct options are
A exposed surface of iron
B moisture
C air
Rusting of iron takes place in the presence of moisture(water) and air(oxygen). So, exposure of the surface of iron to air and water vapour(in the air) are necessary conditions for rusting of iron.

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