A) \[\Delta {{S}_{total}}=0,\] always
B) \[\Delta {{S}_{total}}=\] positive, always
C) \[\Delta {{S}_{total}}=\] negative, always
D) \[\Delta {{S}_{total}}\] will be positive or negative other than zero
Correct Answer: B
Solution :
\[\text{ }\!\!\Delta\!\!\text{ }{{\text{S}}_{\text{total}}}\]corresponds to \[\text{ }\!\!\Delta\!\!\text{ }{{\text{S}}_{\text{universe}\text{.}}}\] Entropy may increase or decrease of the system but for spontaneous process, the energy of the universe remains constant and entropy increases continuously.
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