Back to KINETIC THEORY OF GASES

NEET UG PHYSICS MCQ: KINETIC THEORY OF GASES

1 Easy

1 of 1

Analyzing +4 | -1

Assertion: Equal masses of helium and oxygen gases are given equal quantities of heat. There will be a greater rise in the temperature of helium compared to that of oxygen.
Reason: The molecular weight of oxygen is more than the molecular weight of helium.

View answer and explanation

Correct option: B

If both assertion and reason are true but reason is not correct explanation of the assertion

Option C (The average rotational kinetic energy of a molecule is

\mathrm{mv}^2 / 4

) is false because the average rotational kinetic energy for a diatomic molecule is

RT

, which translates to

mv^2/2

considering two degrees of freedom.

More Questions from KINETIC THEORY OF GASES

Practice All Chapter MCQs →

The absolute zero is the temperature at which The internal energy

\left( U \right)

\left( p \right)

\left( V \right)

of an ideal gas are related as

U = 3pV + 4

. The gas is A monoatomic ideal gas is contained in a rigid container of volume

V

with walls of total inner surface area

A

x

and thermal conductivity

K

. The gas is at an initial temperature

T_0

P_0

. If the pressure of the gas as a function of time if the temperature of the surrounding air is

T_{\mathrm{s}}

\frac{T_0}{T_0}\left[T_s-\left(\mathrm{T}_s-T_0\right)_e \frac{-Z k A}{3 x R} t\right]

. Find the value of

z

. All temperatures are in absolute scale. Assertion: The change in air pressure effect the speed of sound.
Reason: The speed of sound in a gas is proportional to the square of pressure. The rms speed of oxygen molecule in a vessel at particular temperature is

\left(1+\frac{\gamma}{28}\right)^{\frac{1}{2}} v,

v

is the average speed of the molecule. The value of

\gamma

\left(\pi=\frac{22}{7}\right)

For an ideal gas the instantaneous change in pressure

p

V

is given by the equation

\frac{{dp}}{{dV}}\, = \, - ap.

p\, = \,{p_0}

V\, = \,0

is the given boundary condition, then the maximum temperature one mole of gas can attain is (Here

R

is the gas constant)