Question

(a) name and state the principle used to check purity of milk by lactometer (b) write its two application

Answer 1

(a) 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.

(b-1)The principle is used to check the purity of different substances.
(b-2)By using Specific Gravity to our advantage, we keep the specific gravity of ships and boats less than 1 (i.e. less dense than water) to keep them floating on water.

Answer 2

hey mate....

Archimedes Principle-When an object is fully or partially immersed in a liquid, it absorbs an upthrust or buoyant force which is equal to the weight of the body.

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