Academictask provides MCQs of Physics from Basic to Advance, so that you can prepare accordingly. Physics Mcqs section is useful for both students and job seekers i.e MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test
231. In which process entropy remains constant________________?
A. isobaric
B. isochoric
C. adiabatic
D. isothermal
232. Adiabatic process is also called______________?
A. Heat exchange process
B. Heating process
C. Isentropic process
D. All of the above
233. The work done in the isochoric process is________________?
A. constant
B. variable
C. zero
D. depends on situation
234. For the successful operation of Heat engine which condition should be met ?
A. cyclic process
B. operated at certain temperature difference
C. both A and B
D. none of these
235. The purpose of flywheel in the engines is________________?
A. to smooth out the energy variation
B. to add more weight to engine to work it stable
C. to start engine
D. both A and B
236. Petrol engine is a________________?
A. C.I engine
B. SI engine
C. IC engine
D. all the above
237. Which quantity is a state function_______________?
A. internal energy
B. heat supply
C. pressure
D. volume
238. The unit of entropy is________________?
A. J.K
B. J/K
C. N.m/sec
D. Kgm2/sec2.K
239. The performance of a refrigerator is described by________________?
A. efficiency
B. coefficient of performance
C. both A and B
D. not described
240. In which process all the heat supplied is converted into work done ?
A. isothermal
B. isochoric
C. isobaric
D. isentropic