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Hydrometer and Lactometer

A hydrometer ...

Question

A hydrometer is based on

A

Pascal's law

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B

Bernoulli's principle

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C

Principle of relative density.

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D

Principle of floatation

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Solution

The correct option is D
Principle of floatation

It is based on the law of floatation which states that when a body is floating in a liquid, the weight of the whole body is equal to the weight of liquid displaced by the immersed part of the body.

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