Given below are the steps to test the presence of proteins in a food item:
(i) Take a small quantity of the food item in a test tube, add 10 drops of water to it shake it.

(ii) Make a paste or powder of food to be tested.

(iii) Add 10 drops of caustic soda solution to the test tube and shake well.

(iv)Add 2 drops of copper sulphate solution to it.

Which of the following is the correct sequence of the steps?
The presence of protein in a food material is tested on the basis of a reaction between proteins and alkaline solution of copper sulphate, that gives a violet color.

Test involves the sequence in ii, i, iii, iv

Question

Given below are the steps to test the presence of proteins in a food item:
(i) Take a small quantity of the food item in a test tube, add 10 drops of water to it shake it.

(ii) Make a paste or powder of food to be tested.

(iii) Add 10 drops of caustic soda solution to the test tube and shake well.

(iv)Add 2 drops of copper sulphate solution to it.

Which of the following is the correct sequence of the steps?

The presence of protein in a food material is tested on the basis of a reaction between proteins and alkaline solution of copper sulphate, that gives a violet color.

Test involves the sequence in ii, i, iii, iv

Philoid · Accepted Answer

The presence of protein in a food material is tested on the basis of a reaction between proteins and alkaline solution of copper sulphate, that gives a violet color.

Test involves the sequence in ii, i, iii, iv