Which instrument is used to measure atmospheric pressure? || ADRE 1.0 SLRC 2022 PAPER-IV SOLVED QUESTIONS

Question:

Which instrument is used to measure atmospheric pressure? 

    (A) Nanometer 

    (B) Barometer 

    (C) Altimeter 

    (D) Hydrometer

Answer:

Option	Instrument	Explanation
(A)	Nanometer	Incorrect. A nanometer is a unit of length, not an instrument for measuring atmospheric pressure.
(B)	Barometer	Correct. A barometer is an instrument specifically used to measure atmospheric pressure.
(C)	Altimeter	Incorrect. An altimeter measures altitude, not atmospheric pressure.
(D)	Hydrometer	Incorrect. A hydrometer measures the density or specific gravity of liquids, not atmospheric pressure.

A barometer is the instrument used to measure atmospheric pressure, essential for weather forecasting and understanding atmospheric conditions.