Question

Choose the correct answer from the alternatives given.
Which instrument is used for measurement of humidity in air?

• A. Hygrometer
• B. Hydrometer
• C. Manometer
• D. Odometer

Answer 1

Answer: (A)

Hygrometer

Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer. A psychrometer uses two thermometers to measure relative humidity; one measures the dry-bulb temperature, and the other measures the wet-bulb temperature. A hydrometer is an instrument used to measure the specific gravity (or relative density) of liquids. A manometer is a scientific instrument used to measure gas pressures. An odometer is an instrument used for measuring the distance traveled by a vehicle.