Question

Why should curd and sour substances not be kept in brass and copper vessels ?
Answer this.........​

Answer 1

Curd and sour substances contains acids which when react with a metal forms salts and water.. The salt so formed contaminates the food item making it unfit for consumption....

Thus curd must not be kept in brass and copper vessels as they are metals...

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Answer 2

Answer:

It's because they are acidic substances, When acidic substances come in contact with metal they can easily corrode it, the corrosion can release toxic materials into it making it unfit for consumption.