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  • Select the correct statement out of the following:Option: 1 All spontaneous processes are instantaneous

Select the correct statement out of the following:

Option: 1

All spontaneous processes are instantaneous


Option: 2

All instantaneous processess are spontaneous


Option: 3

All spontaneous processes have an increase in entropy of system


Option: 4

Reversible processes are spontaneous


Answers (1)

best_answer

As we learnt,

For spontaneity, \mathrm{\Delta S_{universe}} should be positive. Reversible processes and processes at equilibrium have value of \mathrm{\Delta S_{universe}} equal to Zero.

Processes which are spontaneous may not be instantaneous but instantaneous processes are spontaneous.

Hence, the correct answer is Option (2)

Posted by

seema garhwal

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