The basis for measuring thermodynamic property of temperature is given by___________________?

A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics

Work done is zero for the following process_________________?

A. Constant volume
B. Free expansion
C. Throttling
D. All of the above

In a non-flow reversible process for which p = (- 3V+ 15) x 105N/m2,V changes from 1 m to 2 m3. The work done will be about_______________?

A. 100 xloo5 joules
B. Lxlo5 joules
C. 10 xlo5 joules
D. 10 xlo5 kilo joules

On volume basis, air contains following parts of oxygen _____________________?

A. 21
B. 23
C. 25
D. 77

The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is________________?

A. 29.27 j/kmol°k
B. 83.14j/kmol°k
C. 848j/kmol°k
D. All j/kmol °k

In a free expansion process___________________?

A. Work done is zero
B. Heat transfer is zero
C. Both a. and b. above
D. Work done is zero but heat increases

The specific heat of air increases with increase in __________________?

A. Temperature
B. Pressure
C. Both pressure and temperature
D. Variation of its constituents

Which of the following processes are thermodynamically reversible___________________?

A. throttling
B. free expansion
C. constant volume and constant pressure
D. hyperbolic and pv = c

In order that a cycle be reversible, following must be satisfied ________________?

A. Free expansion or friction resisted expansion/compression process should not be encountered
B. When heat is being absorbed, temperature of hot source and working sub¬stance should be same
C. When beat is being rejected, temperature of cold source and working sub-stance should be same
D. All of the above

Minimum work in compressor is possible when the value of adiabatic index n is equal to_________________?

A. 0.75
B. 1
C. 1.27
D. 1.35