Question

What is the use of a lactometre?

• A. To check the level of solution.
• B. To measure temperature of milk.
• C. To check the blood pressure in cattle.
• D. To check the purity of cow's milk.

Answer 1

The correct option is D

To check the purity of cow's milk.

A lactometre is a little glass instrument that tests the purity of milk based on density/buoyancy and works on the principle of the specific gravity. So, more the amount of water in milk, the lactometre will sink more in that milk. The lactometre will float in the milk with more cream. These instruments are so easy to make that they can be made at home.