Question

Lactometer : Purity of milk
Hydrometer

Answer 1

Explanation:

If it sinks up to the mark of 1, it implies the pure milk content is 25% of the total volume of liquid, in which the Lactometer was place

Answer 2

Explanation:

Hydrometer: measures the (specific) density of a liquid relating to either dissolved sucrose (common table sugar or saccharose) or salt. ... Lactometer: measures the specific gravity of milk and indicates the content of unsaturated fats, proteins and calcium.

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