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Is it possible to increase the temperature of a gas without adding heat to it? If yes, then explain how?

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For an adiabatic change, first law of thermodynamics may be expressed as : 

dU + PdV = 0

or, dU = −PdV

The temperature of a gas will increase, if dU is positive. For this, dV has to be negative. Therefore temperature of a gas can be increased without adding heat, if it is compressed adiabatically.

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