ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 2

HARD

11th ICSE

IMPORTANT

Earn 100

The volume of an air bubble becomes $11$ times on reaching the surface of water from the bottom of a lake. If the height of mercury in the barometer be $75 c m$ , then calculate the depth of the lake. Density of water of the lake is $1.02 \times 10^{3} k g m^{- 3}$ .

Important Questions on Kinetic Theory of Gases

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 3

The pressure of an ideal gas filled in the bulb of a constant-volume gas thermometer at

7 ° C

is

60 c m

of mercury. What will be the pressure of the same volume of gas at

147 ° C

?

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 4

Air is filled in a bottle at atmospheric pressure and it is corked at

35 ° C

. If the cork can come out at

3

atmospheric pressure then up to what temperature should the bottle be heated in order to remove the cork?

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 5

The volume of a balloon filled partially with helium is

30 m^{3}

at the earth’s surface where the pressure is

76 c m

(mercury) and the temperature is

27 ° C

. If this balloon rises up to a height where the pressure is

7.6 c m

(mercury) and the temperature is

- 54 ° C

, then what will be the volume of the gas there?

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 6

There are

4 \times 10^{24}

gas molecules in a vessel at

50 K

temperature. The pressure of the gas in the vessel is

0.03

atmospheric. Calculate the volume of the vessel.

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 7

Calculate the number of molecules, volume occupied by one molecule and the average distance between two molecules in the

1.00 c m^{3}

volume of gas at

N . T . P .

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 8

Calculate the value of Boltzmann constant

k

. Given:

R = 8.3 \times 10^{3} J (k m o l)^{- 1} K^{- 1}

and Avogadro number

N = 6.023 \times 10^{26} (k m o l)^{- 1}

.

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 9

The volume of a gas at the pressure

1.2 \times 10^{7} N m^{- 2}

and the temperature

127 ° C

is

2.0 l i t r e s

. Find the number of molecules in the gas.

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 10

Kinetic energy of oxygen molecule at

0 ° C

is

5.64 \times 10^{- 21} J

. Calculate Avogadro’s number.