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Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which instrument is used to measure Earth's air pressure ?

A
Barometer
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B
Thermometer
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C
Micrometer
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D
Gaugemeter
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Solution

The correct option is A Barometer
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> An instrument that helps to measure Earth’s air pressure is the barometer. It is an inverted glass tube immersed in mercury.

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