Question

a solution of __________ and caustic soda is used to detect the presence of proteins.​

Answer 1

Answer:

Copper Sulphate

Explanation:

                Using a dropper, take a small quantity of 40% NaOH solution.

                Add a few drops of NaOH solution to the test tube containing egg albumin.

                Using a dropper, take a small quantity of 1% CuSO4 solution.

                Add 2-3 drops of CuSO4 solution to the test tube containing egg albumin.

                Shake the solution to mix it well.

                A violet colour appears in the test tube, which indicates the presence of proteins

Answer 2

"copper sulphate"..........