A. 21
B. 23
C. 25
D. 73
E. 79
Related Mcqs:
- On volume basis, air contains following parts of oxygen _____________________?
A. 21
B. 23
C. 25
D. 77
E. 79 - 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
E. 735 J/kmol °K - Universal gas constant is defined as equal to product of the molecular weight of the gas and_______________?
A. specific heat at constant pressure
B. specific heat at constant volume
C. ratio of two specific heats
D. gas constant
E. unity. - The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is______________________?
A. 29.27 kgfm/mol°K
B. 8314kgfm/mol°K
C. 848kgfm/mol°K
D. 427kgfm/mol°K
E. 735 kgfm/mol°K - 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
E. Avogadro’s hypothesis - The following cycle is used for air craft refrigeration___________________?
A. Brayton cycle
B. Joule cycle
C. Carnot cycle
D. Bell-Coleman cycle
E. Reversed-Brayton cycle - Specific heat of air at constant pressure is equal to___________________?
A. 0.17
B. 0.21
C. 0.24
D. 1.0
E. 1.41 - The specific heat of air increases with increase in __________________?
A. temperature
B. pressure
C. both pressure and temperature
D. variation of its constituents
E. air flow - Compressed air coming out from a punctured football___________________?
A. becomes hotter
B. becomes cooler1
C. remains at the same temperature
D. may become hotter or cooler depend-ing upon the humidity of the surround¬ing air
E. attains atmospheric temperature - The ratio of two specific heats of air is equal to____________________?
A. 0.17
B. 0.24
C. 0.1
D. 1.41
E. 2.71
