Chemistry-First Law

NEET Chemistry First Law Assertion Reason Question

Type: Assertion Reason-assertion-Hard-Class 11

Assertion (A): The change in internal energy of a system is independent of the path taken to achieve the change. | Reason (R): According to the first law of thermodynamics, for any process, the sum of heat transferred and work done equals the change in internal energy.

A

Both A and R are true, and R is the correct explanation of A.

B

Both A and R are true, but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Correct Answer

Option A

Detailed Explanation

The first law of thermodynamics states that the change in internal energy (∆U) is equal to the sum of heat (q) and work (w) done, which depends only on the initial and final states, not on the path taken.

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