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#10-Pressure-of-Gas
(Physics) > Kinetic Theory of Gases
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Related Practice Questions :

The mean translational kinetic energy of a perfect gas molecule at the temperature T Kelvin is:

(1) $\frac{1}{2}kT$         (2) kT             (3) $\frac{3}{2}kT$            (4) 2 kT

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Difficulty Level:

The average kinetic energy of a gas molecule can be determined by knowing:                                        [RPET 2000, MP PET 2010]

(1) The number of molecules in the gas

(2) The pressure of the gas only

(3) The temperature of the gas only

(4) None  of the above is enough by itself

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Difficulty Level:

One litre of gas A and two litres of gas B, both having the same temperature 100$°$C and the same pressure 2.5 bar will have the ratio of kinetic energies of their molecules as:

(1) 1:1       (2) 1:2       (3) 1:4         (4) 4:1

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Difficulty Level:

The kinetic energy of one gram molecule of a gas at normal temperature and pressure is: (R = 8.31 J/mol-K)

[DPMT 1997; Pb. PMT 1997, 2000, 03; AFMC 1998; MH CET 1999]

(1) 0.56                (2)

(3)                   (4)

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Difficulty Level:

Gases exert pressure on the walls of containing vessel because  the gas molecules:

(1) Possess momentum

(2) collide with each other

(3) have finite volume

(4) obey gas laws