railway RRB JE (CBT I + CBT II) Mock Test 2024 Thermodynamics Ideal and Real Gases Internal Energy and Enthalpy of a Perfect Gas
If a closed system receives 30 kJ of heat while undergoing 91 kJ of reduction in internal energy, then :
1
61 kJ of work is done on the system
2
121 kJ of work is done on the system
3
121 kJ of work is done by the system
4
61 kJ of work is done by the system