A perfect gas having p1= 0.1 M/mm², v1=0.18 m³, T1=20°C is compressed to 1/10 of volume in an isothermal process. The change in entropy is

Related MCQs

• 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
• The entropy increase due to internal irreversibility is also called entropy production or entropy generation.
• 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.
• According to entropy principle, the entropy of an isolated system can never decrease and remains constant only when the process is reversible.
• The change of entropy when heat is absorbed by the gas is
• The change of entropy is considered to be ……… when heat is absorbed by the gas
• Boyle's law states that, when tempearture is constant, the volume of a given mass of a perfect gas
• If a system undergoes a reversible isothermal process without transfer of heat, the temperature at which this process takes place is called
• For a reversible adiabatic process, the change in entropy is