AIIMS2006Physics-Thermodynamics
AIIMS 2006 Physics Spontaneity MCQ Question
Type: MCQ-conceptual-Medium-Class 11
For a spontaneous process the correct statement is
A
entropy of the system always increases
B
free energy of the system always decreases
C
total entropy change is always negative
D
total entropy change is always positive.
Correct Answer
Option D
Detailed Explanation
ΔS(total) = ΔS(system) + ΔS(surroundings). For a spontaneous process ΔS(total) must be positive.
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