Physics MCQs

Page No. 3

Which of the following properties of molecules of a gas is same for all gases at particular temperature ?


amomentum


bmass


c velocity


dkinetic energy


View Answer kinetic energy

Triple point of water is_____________________?


a273°C at 6.11 Kpa


b273K at 61.6 Kpa


c273.16°C at 0.611 Kpa


d273.16K at 750 Kpa



For a gas obeying Boyles law if the pressure is doubled the volume becomes________________?


adouble


bone half


cfour times


done fourth


View Answer one half

The area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine_______________?


aat any instant


baveragely


cduring its operation


dduring one cycle


View Answer during one cycle

At what temperature is the Fahrenheit scale reading equal to twice that of the Celsius scale?


a460°C


b280°C


c360°C


d160°C


View Answer 160°C

Standard condition STP refer to a gas at ___________________?


a76cm 0°C


b760mm 273K


c1atm 273K


dall of the above


View Answer all of the above

Which one is true for internal energy ?


aIt is sum of all forms of energies associated with molecules of a system


b It is a state function of a system


cIt is proportional to transnational K.E of the molecules


dAll are correct


View Answer All are correct

According to Pascals law the pressure of gas in a vessel is_____________?


aDifferent in different direction


bSame in all direction


cSame only along opposite directions


dSame only along normal directions


View Answer Same in all direction

The size of one degree of Celsius is equal to_________________?


aOne degree of Fahrenheit scale


b1.8 degrees of Fahrenheit scale


c3.2 degrees of Fahrenheit scale


d2.12 degrees of Fahrenheit scale



The Fahrenheit and centigrade scales agree to________________?


a 40


b15.5


c 542


d273


View Answer 40

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