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Give reasons : (i) Sodium metal is sto...

Give reasons :
(i) Sodium metal is stored under kerosene oil.
(ii) Inspite of being highly reactive, aluminium is still used for making utensils.

Text Solution

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(i) Sodium is a highly reactive metal. It can catch fire if kept in open. Hence to protect it an prevent accidental fire, it is stored under kerosene oil.
(ii) Due to high reacticity of aluminium, a thin layer of aluminium oxide is formed on it. This protective layer of aluminium oxide prevents the metal from further corrosion. Hence, aluminium is anodizing.
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