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Assertion : Heat and work are modes of energy transfer to a system resulting in change in its internal energy. Reason : Heat and work in thermodynamics are state variables. The correct option among the following is

Options

  1. A(A) is true, (R) is true and (R) is the correct explanation for (A)
  2. B(A) is true, (R) is true but (R) is not the correct explanation for (A)
  3. C(A) is true but (R) is false
  4. D(A) is false but (R) is true

Correct answer

C. (A) is true but (R) is false

Step-by-step solution

Assertion is correct as U = Q - W Now, heat is a path function So, it is not a state variable. Therefore, reason is correct.

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