engineering recuitment GATE ME 2023-24 Test Series Thermodynamics Second Law of Thermodynamics and Entropy Entropy and Irreversibility
A fluid A of mass 3 kg and specific heat 2 kJ/kg K is at a temperature of 600 K and another fluid B of mass 8 kg and specific heat 4.2 kJ/kg K is at a temperature of 300 K. Both comprise a composite system in an adiabatic enclosure. When the partition is removed, two fluids mix together and reached equilibrium. Now which of the following options are true.
1
The final equilibrium temperature is 345.45 K
2
ΔsA = -3.3124 kJ/K ; ΔsB = 4.74 kJ/K ; Δssystem = 1.428 kJ/K;
3
ΔsA = 3.3124 kJ/K ; ΔsB = - 4.74 kJ/K ; Δssystem = - 1.428 kJ/K;
4
The process is not possible.