Question Details

Detailed explanation and options for the selected question.

Which chemical test uses nitric acid and ammonia to detect proteins (turning violet)?

A. Benedict’s test

B. Biuret test

C. Iodine test

D. Fehling’s test

Explanation:

The Biuret test turns violet in the presence of proteins. Benedict’s and Fehling’s test for sugars, iodine test for starch.

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