Question

Name and state the principal used to check purity of milk by lactometre

Answer 1

The principle used to check the purity of milk is the specific gravity of Archimedes Principle. It checks the relative density of milk with respect to water.

Answer 2

Archimedes Principle is the  principal by which lactometer works to check the purity of water.

Archimedes Principle states that when a body is immersed fully or partially in a fluid , it experiences an upward force which is equal to the  weight of fluid displaced by it .