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A thermodynamical system is changed from state $\left(\mathrm{P}_{1}, \mathrm{~V}_{1}\right)$ to $\left(\mathrm{P}_{2}, \mathrm{~V}_{2}\right)$ by two different process, the quantity which will remain same will be
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The correct answer is:
$\Delta \mathrm{Q}-\Delta \mathrm{W}$
For all process $\Delta \mathrm{U}=\Delta \mathrm{Q}-\Delta \mathrm{W}$
does not change as it depends on initial final states.
does not change as it depends on initial final states.
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