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Dhanush Wafa Agate
Asked: 2022-10-29T01:51:06+05:30 In:

Assertion : An exothermic process which is non-spontaneous at high temperature may become spontaneous at low temperature.
Reason : Spontaneous process is an irreversible process and may be reversed by some external agency.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Assertion : An exothermic process which is non-spontaneous at high temperature may become spontaneous at low temperature.
Reason : Spontaneous process is an irreversible process and may be reversed by some external agency.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false.
D. If both assertion and reason are false.
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1 Answer

  1. Correct Answer – B
    `DeltaG=DeltaH-TDeltaS`
    For exothermic process, `DeltaH=-ve`. For `DeltaG` to be `-ve` (for spontaneous process), `DeltaH gt T DeltaS` which is possible only at low temperature.

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