Question

write test for protein

Answer 1

Procedure - Add a small amount of calcium oxide and 5 drops of milk to a test tube. Add three drops of water. Dampen the litmus paper with water. Carefully heat the test tube in a flame. If protein is present in food the litmus paper change colour from red to blue.

Answer 2

Answer:

1. Take milk in a test tube
2. Add drops of copper sulphate and few drops of sodium hydrate.
3. Shake well and let the test tube stand for a few minutes

We see it turns Violet .A violet colour indicates presence of proteins in the milk.