Question

A solution of copper sulphate is used to test for

• A. proteins
• B. fat
• C. starch
• D. vitamins

Answer 1

The correct option is A

proteins

The correct option is A.

Explanation of the correct option:

1. Copper sulphate solution is used to detect the presence of protein in a food item.
2. Proteins are the essential nutrients that are necessary for the cell growth and repair of the body.
3. Proteins are the building block of our body that are made up of amino acids.

Explanation of the incorrect option:

Option B:

1. Crystals of potassium bisulfite are used to detect the presence of fats in the food item.
2. Fats are energy-providing nutrients and some sources of fats are milk, butter, ghee, meat etc.

Option C:

1. Iodine solution is the test used to detect the presence of starch (carbohydrate) in a food item.
2. Carbohydrate is an essential nutrient that provides us energy to perform various day-to-day activities. The main sources of carbohydrates include bread, chapati, rice etc.

Option D:

1. The antimony trichloride test is used to detect the presence of vitamin A.
2. Vitamins are the necessary nutrients that are required by our body to protect it against various diseases.

Final answer:

A solution of copper sulphate is used to test for proteins.