If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called___________________?

A. Free expansion
B. Hyperbolic expansion
C. Adiabatic expansion
D. Parabolic expansion

Which of the following processes is irreversible process___________________?

A. Isothermal
B. Adiabatic
C. Throttling
D. All of the above

For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?

A. Zero
B. Minimum
D. Maximum
D. Infinity

Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be ____________________?

A. 4.17m3/kgmol
B. 400 m3/kg mol
C. 0.15 m3/kg mol
D. 41.7 m3/kg mol

The more effective way of increasing efficiency of Carnot engine is to____________________?

A. Increase higher temperature
B. Decrease higher temperature
C. Increase lower temperature
D. Decrease lower temperature

For reversible adiabatic process, change in entropy is_________________?

A. Maximum
B. Minimum
C. Zero
D. Unpredictable

According to first law of thermodynamics__________________?

A. Work done by a system is equal to heat transferred by the system
B. Total internal energy of a system during a process remains constant
C. Internal energy, enthalpy and entropy during a process remain constant
D. Total energy of a system remains constant

First law of thermodynamics furnishes the relationship between______________________?

A. Heat and work
B. Heat, work and properties of the system
C. Various properties of the system
D. Various thermodynamic processes

In an isothermal process, the internal energy________________?

A. Increases
B. Decreases
C. Remains constant
D. First increases and then decreases

According to first law of thermodynamics_______________________?

A. Mass and energy are mutually convertible
B. Carnot engine is most efficient
C. Heat and work are mutually convertible
D. Mass and light are mutually convertible