Question

Instrument used for measuring the humidity is

• A. Thermometer
• B. Hygrometer
• C. Pyrometer
• D. Penetrometer

Hint:

Break down the word roots: "Thermo" for heat/temperature, "\textbf{Hygro}" for moisture, "Pyro" for fire/high-heat, and "Penetro" for penetration.

Answer 1

The Correct Option is B

Step 1: Define the function of each instrument.
Thermometer: Measures temperature.
Hygrometer: Measures humidity, which is the amount of water vapor in the air. A psychrometer is a type of hygrometer.
Pyrometer: Measures high temperatures from a distance by detecting thermal radiation.
Penetrometer: Measures the hardness or consistency of a substance (like soil, asphalt, or food) by measuring the depth of penetration of a needle or cone.
The correct instrument for measuring humidity is the hygrometer.