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Assertion (A). Spontaneous process is an...

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

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

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The correct Answer is:
B

Both assertion and reaon are true but reason is not the correct explanation of assertion.
Spontaneous processes are accompanied by decrease in energy and increase in randomness.
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NCERT EXEMPLAR-THERMODYNAMICS-Multiple choice questions
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