Physics MCQs

Page No. 3

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


amomentum

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bmass

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c velocity

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dkinetic energy

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View Answer kinetic energy

Triple point of water is_____________________?


a273°C at 6.11 Kpa

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b273K at 61.6 Kpa

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c273.16°C at 0.611 Kpa

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d273.16K at 750 Kpa

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


adouble

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bone half

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cfour times

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done fourth

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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

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baveragely

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cduring its operation

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dduring one cycle

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View Answer during one cycle

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


a460°C

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b280°C

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c360°C

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d160°C

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View Answer 160°C

Standard condition STP refer to a gas at ___________________?


a76cm 0°C

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b760mm 273K

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c1atm 273K

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dall of the above

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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

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b It is a state function of a system

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cIt is proportional to transnational K.E of the molecules

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dAll are correct

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View Answer All are correct

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


aDifferent in different direction

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bSame in all direction

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cSame only along opposite directions

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dSame only along normal directions

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View Answer Same in all direction

The size of one degree of Celsius is equal to_________________?


aOne degree of Fahrenheit scale

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b1.8 degrees of Fahrenheit scale

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c3.2 degrees of Fahrenheit scale

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d2.12 degrees of Fahrenheit scale

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The Fahrenheit and centigrade scales agree to________________?


a 40

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b15.5

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c 542

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d273

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View Answer 40

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