Q. 56

In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A): Spontaneous process is an irreversible process and may be reversed by some external agency.

Reason (R): Decrease in enthalpy is a contributory factor for spontaneity.

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

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

• A is true but R is false.

• A is false but R is true.

Answer :

(ii) Both A and R are true but R is not the correct explanation of A

Explanation: Spontaneous process is an irreversible process and may be reversed by some external agency like pressure, temperature etc because spontaneous process deals with the degree of increase in randomness and decrease in energy.


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