Question

Change of colour to violet or purple confirms presence of​

Answer 1

Answer:

The answer is proteins

Explanation:

Biuret test is a chemical assay that detects the presence of proteins in a given sample. This test detects a color change to confirm the presence of proteins. If proteins are present in the sample, its color will turn violet. Biuret reagent is an alkaline mixture of potassium hydroxide and copper sulphate.

Answer 2

Answer:

colur in ur surrounding

Explanation:

thnx 4 point