EASY
11th ICSE
IMPORTANT
Earn 100

The density of a gas at normal pressure and 0°C temperature is 1.2 kgm-3. Calculate the temperature at which the velocity will become three times the initial velocity.

Important Questions on Kinetic Theory of Gases

HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 19
The root-mean-square velocity of helium atoms at normal temperature and pressure is 1300 ms-1. Calculate density of helium at 0°C.
EASY
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 19
The root-mean-square velocity of helium atoms at normal temperature and pressure is 1300 ms-1. Calculate the mass of the helium atom.
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 20
The density of hydrogen at normal temperature and pressure is 0.09 kgm-3. What will be the root- mean-square speed of its molecules? What of oxygen? Oxygen is 16 times heavier than hydrogen.
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 21
The root-mean-square speed of oxygen molecules at a certain temperature is 150 ms-1. Calculate the root-mean-square speed of hydrogen molecules at the same temperature. Molecular weights of oxygen and hydrogen are respectively 32 and 2.
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 22
What will be the ratio of the root-mean-square speeds of the molecules of an ideal gas at 270 K and 30 K?
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 23
At what temperature will the root-mean-square velocity of molecules of a gas be twice the root- mean-square velocity at 0°C? At what temperature 1.5 times?
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 24
At what temperature will the effective speed (root-mean-square speed) of oxygen molecule be equal to the effective speed of nitrogen molecule at 0°C?
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 25
The root-mean-square speed of oxygen molecules at 0°C is 460 ms-1. What will be the speed of helium molecules at 40°C? The molecular weight of oxygen is 32 g mol-1 while that of helium is 4 g mol-1.