Question

5. How can we taste the presence of proteins in food?​

Answer 1

Answer:

Using a dropper add two drops of copper sulphate solution to the test tube. Add 10 drops of caustic soda solution and shake the test tube. Observe the colour of the mixture. Violet colour indicates the presence of proteins in the tested food item.

Answer 2

I think that there is a little error in ur question- instead of taste there must be test....

answer:-

Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.

hope this helps......