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A student set - up the experiment below to find out what conditions were needed for rusting to occur.
Why have calcium chloride and boiling water, be taken in test tubes B and C respectively ?

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An Intiative by Sri Chaitanya

To absorb oxygen and moisture respectively

To absorb oxygen and being rich is oxygen respectively

To absorb moisture and oxygen respectively

To absorb moisture and having no oxygen respectively

answer is D.

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Detailed Solution

${CaCl}_{2}$ absorb moisture and no oxygen is present in hot water. Since The essential condition for rusting is moist air and oxygen. Hence Rusting is not observed in B and C.

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