When heat is given to a gas in an isothermal change, the result will be

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External work done

Rise in temperature

Increase in internal energy

External work done and also rise in temp.

answer is A.

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Detailed Solution

In isothermal change, temperature remains constant, Hence ΔU=0. Also from ΔQ=ΔU+ΔW⇒ΔQ=ΔW

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