| Some iron nails were stored in containers for a few weeks as shown in the diagram below. |
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| Only the nails in bottle X rusted. What will be a suitable conclusion for the given experiment? |
A) Rusting requires water only.
B) Rusting requires air only.
C) Rusting requires both water and air.
D) Rusting requires neither air nor water.
Correct Answer: C
Solution :
As only nails in bottle X got rusted, this means both water and air are required for rusting (as bottle X is fulfilling both the conditions). Bottle 'W has only air, bottle 'Y' has only water and bottle 'Z' has oil, i.e., neither air nor water.
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