1. Tardigrade
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  3. Physics
  4. Assertion Heat absorbed by the gas during an isochoric process goes entirely to change its internal energy and its temperature. Reason In an isochoric process, volume is constant.

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Q. Assertion Heat absorbed by the gas during an isochoric process goes entirely to change its internal energy and its temperature.
Reason In an isochoric process, volume is constant.

Thermodynamics

Solution:

In an isochoric process, volume is constant.
So, work done $\Delta W=p \Delta V=0$
Thus, according to first law of thermodynamics,
$\Delta Q=\Delta U+\Delta W $
$\Rightarrow \Delta Q=\Delta U$
Therefore, heat absorbed by the gas goes entirely to change its internal energy and its temperature.
Therefore, Assertion and Reason are correct and Reason is the correct explanation of Assertion.