For any reversible process, the change in entropy of the system & surroundings is

Related MCQs

• According to entropy principle, the entropy of an isolated system can never decrease and remains constant only when the process is reversible.
• The entropy increase due to internal irreversibility is also called entropy production or entropy generation.
• 1.6 Kg of air is expanded at constant pressure from 100°C to 0°C resulting in entropy change of - 2.0 J/K 3.2 Kg of air is cooled at constant volume from 100°C to 0°C with a change in entropy of -3.0 J/K. The ratio Cp/ Cv is
• For a reversible adiabatic process, the change in entropy is
• In a reversible cycle, the entropy of the system
• One reversible heat engine operates between 1600 K & T₂ K & another reversible heat engine operates between T₂ K & 400 K. If both the engines have the temperature T₂ must be equal to
• For any irreversible process the net entropy change is
• A process which can be stopped at any stage & reversed so that the system & the surroundings are exactly restored to their initial states is known as
• The rate of entropy increase of the control volume          or          the net rate of entropy transfer to it.
• The rate at which entropy is transferred out must          the rate at which entropy enters the control volume.