Question

4.
Why We not store sour substance in a aluminium utensils ??? why
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Answer 1

Answer:

This can lead to the spoiling of the pickle. ... Storing lemon pickle in aluminium is the same as storing an acid in a metal container. (Acids react with metals to produce hydrogen gas) So it is advisable to not store leamon pickle in aluminium utensil

Explanation:

Answer 2

Answer:

Sour substances are generally acidic i.e. they contain certain kind of acids specially citric acid. And acids corrode metal. That's why we don't store sour substances in a aluminium utensils.