The temperature at which the mean KE of the molecules from Class Physics Kinetic Theory
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    CBSE

    Subject

    Physics
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    NEET Physics : Kinetic Theory

    Multiple Choice Questions

    41.

    A monoatomic gas supplied the heat Q very slowly keeping the pressure constant. The work done by the gas will be

    • 23 Q

    • 35Q

    • 25Q

    • 15Q

    Answer
    • 42.

    Universal gas constant is :

    • CpCv

    • Cp - Cv

    • CP + CV

    • CVCP

    Answer
    • 43.

    A mixture of oxygen and hydrogen are filled in a vessel at a fixed temperature. The ratio of average kinetic energies of atoms of H2 and O2 is

    • 1 : 16

    • 1 : 8

    • 1 : 12

    • 1 : 1

    Answer
    • 44.

    If 2 g mole of diatomic gas and 1 g mole of monoatomic gas are mixed together, then the ratio of specific heats of mixture is

    • 1 : 24

    • 1 : 58

    • 1 : 46

    • 1 : 60

    Answer
    • 45.

    The gas in a vessel is subjected to a pressure of 20 atm at a temperature 27°C. The  pressure of the gas in a vessel after one-half of the gas is released from the vessel and the temperature of the remainder is raised by 50°C is

    • 8.5 atm

    • 10.8 atm

    • 11.7 atm

    • 17 atm

    Answer
    • 46.

    Who gave the kinetic molecular theory of gas?

    • Device

    • Einstein

    • Newton

    • Bernoulli

    Answer
    • 47.

    The temperature at which the mean KE of the molecules of gas is one-third of the mean KE of its molecules at 180°C is

    • -122°C

    • -90°C 

    • 60°C

    • 151°C

    Answer
    • 48.

    The speed of sound in a gas (γ=1.5) at 300 K is 340 m/s. The rms velocity of gas molecules will be

    • 340  m/s

    • 3402 m/s

    • 3402 m/s

    • 34015 m/s

    Answer
    • 49.

    The temperature at which root mean square velocity of molecules of helium is equal to root mean square velocity of hydrogen at NTP is

    • 273°C

    • 273 K

    • 546°C

    • 844 K

    Answer
    • 50.

    Relation between specific heats of an ideal gas

    • Cp + CV = R

    • Cp − CV = R

    • CpCV = R

    • CVCp = R

    Answer
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