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Q: Which instrument is used to measure the level of humidity ?
  • A. Hydrometer
  • B. Hygrometer
  • C. Galvanometer
  • D. Fathometer
Correct Answer: Option B - A hygrometer is an instrument used to measure relative humidity. Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer.
B. A hygrometer is an instrument used to measure relative humidity. Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer.

Explanations:

A hygrometer is an instrument used to measure relative humidity. Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer.