Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 29

EASY

JEE Main

IMPORTANT

Earn 100

The average energy of molecules in a sample of oxygen gas at $300 K$ are $6.21 \times 10^{- 21}$ $J .$ The corresponding values at $600 K$ are

38.81% studentsanswered this correctly

Important Questions on Kinetic Theory of Gases

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 30

The value of molar specific heat at constant volume for

n

mole of polyatomic gas having a number of degrees of freedom at temperature

T K i s (R

= universal gas constant)

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 31

A cylinder of

200

l

capacity is containing

H_{2} .

The total average translational kinetic energy of molecules is

1.5 \times 10^{5} J .

The pressure of

H_{2}

in the cylinder will be (in

{Nm}^{- 2}

)

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 32

C O_{2} (O - C - O)

is a triatomic gas. The mean kinetic energy of one gram of the gas will be (

N

= Avogadro number,

k

= Boltzmann constant and the molecular weight of

C O_{2} = 44

)

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 33

A gas has volume

V

and pressure

P

. The total translational kinetic energy of all the molecules of the gas is

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 34

One kilogram of a diatomic gas is at a pressure of

8 \times 10^{4} N m^{- 2}

. The density of the gas is

4 kg m^{- 3}

. What is the energy of the gas due to its thermal motion?

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 35

The kinetic energy of one mole gas at

300 K

temperature is

E

. At

400 K

temperature, the kinetic energy is

E'

. The value

\frac{E'}{E}

is,

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 1>Q 36

The average kinetic energy of the molecules of an ideal gas at

10 ° C

has the value

E

. The temperature at which the kinetic energy of the same gas becomes

2 E

is,

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 9 - Kinetic Theory of Gases>Level 2>Q 1

A vessel of volume,

V = 5 litre

contains

1.4 g

nitrogen and

0.4 g

of

He

at

1500 K

. If

30 %

of the nitrogen molecules are disassociated into atoms, then the gas pressure becomes

\frac{N}{8} \times 10^{5} N m^{- 2}

. Find

N

(assume

T

is constant)

[R = \frac{25}{3} J {mol}^{- 1} K^{- 1}]

.