question_answer

John performs an experiment to show the presence of protein. He takes a piece of meat, mash it with the mortar and pestle, and add a little water to make a suspension. Now, he takes a little of this suspension in a test tube. He adds a few drops of copper sulphate solution to it and a few drops of sodium hydroxide solution. Which of the following observation will show the presence of protein?

A) Solution becomes purple

B) Solution becomes milky

C) Solution becomes yellow

D) Solution becomes orange

E) None of these