To find the relative density of sulphuric acid in an acid battery ______ is used.

acid battery barometer

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acid battery altimeter

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acid battery densitymeter

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acid battery hydrometer

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Solution

The correct option is C acid battery hydrometer
Acid battery hydrometer is used To find the relative density of sulphuric acid in an acid battery. A hydrometer is used to test the state of charge of a battery cell. This is performed by measuring the density of the electrolyte, which is accomplished by measuring the specific gravity of the electrolyte. The greater the concentration of sulfuric acid, the more dense the electrolyte becomes. The higher the density, the higher the state of charge.

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