Q58 of 102 Page 77

Can you store lemon pickle in an aluminium utensil? Explain.

Lemon pickle is acidic in nature. Aluminium metal is highly reactive in nature. If the pickle is stored in an aluminium container, the acid present in pickle will react with aluminium and the pickle will be spoiled.

Hence, we cannot store lemon pickle in aluminium container.


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57

Name one metal which can displace iron from iron sulphate solution.

 57

Name one metal which cannot displace iron from iron sulphate solution.

 59

Why should the foodstuffs like orange juice, pickles, chutney and curd not be kept in iron or aluminium containers?

 60

Give reasons for the following:

(a) Sodium and potassium are stored in kerosene.


(b) Copper cannot displace zinc from its salt solution (zinc sulphate solution).