GATE XE (Engineering Sciences) 2014 - Question 78

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Section: Thermodynamics | Marks: 2

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. 47.8
  • D. −47.8

Answer: A. 17.28

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