Question

what indicator is used to test for protein?
sudan iii solution
lugols iodine
biuret solution
benedicts solution

Explanation:

Sudan III Solution is for testing lipids. Lugol's iodine is for starch. Benedict's Solution is for reducing - sugars. Biuret Solution reacts with peptide bonds in proteins to give a color - change, so it is used for protein testing.

Answer:

C. Biuret Solution