On volume basis, air contains following parts of oxygen _____________________?
A. 21
B. 23
C. 25
D. 77
E. 79
Month: January 2019
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_______________?
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
E. 10xl04kiojoules
Work done is zero for the following process_________________?
Work done is zero for the following process_________________?
A. constant volume
B. free expansion
C. throttling
D. all Of the above
E. none of the above
The basis for measuring thermodynamic property of temperature is given by___________________?
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
Zeroth law of thermodynamics________________?
Zeroth law of thermodynamics________________?
A. deals with conversion of mass and energy
B. deals with reversibility and irreversibility of process
C. states that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other
D. deals with heat engines
E. does not exist
A heat exchange process in which the product of pressure and volume remains constant is known as_______________?
A heat exchange process in which the product of pressure and volume remains constant is known as_______________?
A. heat exchange process
B. throttling process
C. isentropic process
D. adiabatic process
E. hyperbolic process
Change in enthalpy of a system is the heat supplied at___________________?
Change in enthalpy of a system is the heat supplied at___________________?
A. constant pressure
B. constant temperature
C. constant volume
D. constant entropy
E. N.T.P. condition
If value of n is infinitely large in a polytropic process pV” = C, then the process is known as constant_____________________?
If value of n is infinitely large in a polytropic process pV” = C, then the process is known as constant_____________________?
A. volume
B. pressure
C. temperature
D. enthalpy
E. entropy
A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is________________?
A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is________________?
A. 54°C
B. 327°C
C. 108°C
D. 654°C
E. 600°C
The value of n = 1 in the poly tropic process indicates it to be __________________?
The value of n = 1 in the poly tropic process indicates it to be __________________?
A. reversible process
B. isothermal process
C. adiabatic process
D. irreversible process
E. free expansion process