Question

I dentfy
my presence can be detected by
water, sulphate and caustic soda
with food.
Using​

Answer 1

Answer:

When a few drops of a solution of copper sulphate and caustic soda are applied to a part of food, a violet colour shows the presence of proteins.

Explanation:

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Answer 2

Proteins. When few amount of caustic soda & copper sulphate is added to food, if it turns into violet, we can come to a conclusion that it has proteins in it .

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