A. exactly as gas
B. as steam
C. as ordinary vapour
D. approximately as a gas
E. as average of gas and vapour
Related Mcqs:
- If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as__________________?
A. free expansion
B. hyperbolic expansion
C. adiabatic expansion
D. parabolic expansion
E. throttling - An isolated system is one in which_____________________?
A. mass does not cross boundaries of the system, though energy may do so
B. neither mass nor energy crosses the boundaries of the system
C. both energy and mass cross the boundaries of the system
D. mass crosses the boundary but not the energy
E. thermodynamic reactions do not occur - 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 - Isochoric process is one in which___________________?
A. free expansion takes place
B. very little mechanical work is done by the system
C. no mechanical work is done by the system
D. all parameters remain constant
E. mass and energy transfer do not take place - A sudden fall in the barometer reading is a sign of approaching________________?
A. fine weather
B. rains
C. storm
D. cold wave
E. hot wave - The efficiency of Diesei cycle with decrease in cut off_________________?
A. increases
B. decreases
C. remains unaffected
D. first increases and then decreases
E. first decreases and then increases - The energy of molecular motion appears as________________?
A. heat
B. potential energy
C. surface tension
D. friction
E. increase in pressure - 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
E. throttling - Work done in an adiabatic process between a given pair of end states depends on__________________?
A. the end states only
B. particular adiabatic process
C. the value of index n
D. the value of heattransferred
E. mass of the system - According to kinetic theory of gases, the absolute zero temperature is attained when___________________?
A. volume of the gas is zero
B. pressure of the gas is zero
C. kinetic energy of the molecules is zero
D. specific heat of gas is zero
E. mass is zero
