Where can a lactometer be used?

To check purity of petrol.

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To check purity of milk.

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To differentiate between two liquids having different volumes.

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To differentiate between two liquids having different densities.

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Solution

The correct options are
A To check purity of petrol.
B To check purity of milk.
D To differentiate between two liquids having different densities.
Lactometer works on the Archimedes' principle. It calculates density and can differentiate between liquids based on it. It is often used in applications where purity of the liquids is to be checked.

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Similar questions

Name two properties of a substance to check its purity?

State a method to separate a liquid-liquid mixture containing two immiscible liquids having different densities.

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