Question

what colour change is noticed when copper sulphate and caustic soda solution react with potato​

Answer 1

Explanation:

The caustic soda solution or copper sulfate solution on mixing with the egg white will show nothing.

This test is done to check the protein in a food item, the mixture will turn violet in the presence of caustic soda.

However, the yellow portion of the egg is protein rich.

But in the experiment, there is only white which will show no result at all.

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Answer 2

Here is ur answer

Violet

The caustic soda increases the pH that causes the colour change from blue to violet

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