Physics MCQs

Page No. 2

The unit of entropy is________________?J.K


aJ.K


b J/K


cN.m/sec


dKgm2/sec2.K


View Answer J.K

Which quantity is a state function_______________?


ainternal energy


bheat supply


c pressure


d volume


View Answer internal energy

Petrol engine is a________________?


a C.I engine


bSI engine


c IC engine


d all the above


View Answer all the above

The purpose of flywheel in the engines is________________?


ato 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



For the successful operation of Heat engine which condition should be met ?


acyclic process


boperated at certain temperature difference


cboth A and B


dnone of these


View Answer both A and B

The work done in the isochoric process is________________?


aconstant


bvariable


czero


ddepends on situation


View Answer zero

Adiabatic process is also called______________?


aHeat exchange process


bHeating process


cIsentropic process


dAll of the above


View Answer Isentropic process

In which process entropy remains constant________________?


aisobaric


b isochoric


cadiabatic


d isothermal


View Answer adiabatic

Average translational kinetic energy per molecule of an ideal gas is given by_____________?


a3NaT/2R


b 2NaT/3


c3RT/2Na


d3Na/2RT


View Answer 3RT/2Na

Boltzman constant K in terms of universal gas constant R and Avagadros number Na is give as_______________?


aK = RNa


bK = R/Na


cK = Na/Ra


dK = nRNa


View Answer K = R/Na

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