MHT CET 2026 Chemistry question

Which from following is correct expression of first law of thermodynamics for isothermal process?

(A)Correct
(B)
(C)
(D)

Answer: (A)

Solution

The first law is (work done ON the system taken as positive). In an isothermal process the temperature is constant, and for an ideal gas internal energy depends only on temperature, so . Then , i.e. , option (A): heat absorbed equals work done by

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Question ID VK-100425