- (A) Altimeter
- (B) Barometer
- (C) Ammeter
- (D) Electrometer
_______ is considered the largest glacier of Pakistan.
March 18, 2026
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- (A) Siachen Glacier
- (B) Tirich Mir Glacier
- (C) Biafo Glacier
- (D) Hispar Glacier
To measure the pressure of air which instrument is used?
To measure the pressure of air which instrument is used?
- Barometer is an instrument that measures the air pressure in the atmosphere. It works by comparing the weight of a liquid column of mercury or the expansion of a metal chamber in an aneroid barometer to the weight of the air. Meteorologists use this tool because changes in air pressure are often an indication of weather changes.
- Altimeter: While many altimeters (barometric altimeters) use air pressure to estimate altitude, their primary purpose is to measure the height of an object above a fixed level rather than the pressure itself.
- Ammeter: This instrument is used to measure electric current in a circuit, typically in units of amperes.
- Electrometer: This is an electrical instrument used to measure electric charge or electrical potential difference.
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