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15.
11. A metal block of mass 25 kg at 300 K is
immersed in an infinitely large liquid nitrogen
bath maintained at 77 K. The system
comprising of the block and liquid nitrogen
attains thermal equilibrium. The average
specific heat of the metal is 0.45 kJ/(kg. K).
The entropy generated during the process is
KJ/K.
A. 17.28
B. 32.5
C. 48.8
D. -47.8
[GATE-2014-XE]


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