GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To detect the presence of hydrogen in the atmosphere
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For measuring the specific gravity of liquids
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To detect the changes in atmospheric humidity
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None of the above
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Detailed explanation-1: -A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity.
Detailed explanation-2: -hydrometer, device for measuring some characteristics of a liquid, such as its density (weight per unit volume) or specific gravity (weight per unit volume compared with water).
Detailed explanation-3: -A hydrometer is a popular way to measure the specific gravity of a liquid. A hydrometer is a bulb attached to a stalk with measurement markers that floats in water. By measuring how far the stalk is submerged in the target liquid compared to a reference liquid, the relative density of the two can be determined.
Detailed explanation-4: -A hydrometer is an instrument that is used to measure the density/specific gravity of liquids. Hydrometers are calibrated for different uses. It is specifically used for measuring low-density liquids.