A perfect gas having p1= 0.1 M/mm², v1=0.18 m³, T1=20°C is compressed to 1/10 of volume in an isothermal process. The change in entropy is

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Q. A perfect gas having p1= 0.1 M/mm², v1=0.18 m³, T1=20°C is compressed to 1/10 of volume in an isothermal process. The change in entropy is

(A) -141.45 j/k
(B) 141.45 j/k
(C) -41446.23 j/k
(D) 0

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✅ Correct Answer: (B) 141.45 j/k

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