The instrument to measure the relative density of liquid is?

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A. thermometer
B. hydrometer
C. spring balance
D. beaker

Correct Answer:

Option B – hydrometer

Explanation

Thermometer is used to measure temperature
Hydrometer is used to measure relative density of liquid.
Spring balance is used to measure the weight of an object
Beaker is used to measure or take volume of a liquid

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