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Class 11 Physics Practice Test: Kinetic Theory of Gases - Kinetic Theory of an Ideal Gas
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Avg score: 75% • Most missed: “Average kinetic energy of a gas depends on which of the following factors?”

An ideal gas is a gas where the atoms do not exert forces on each other but they do collide with the walls of the container (in elastic collisions).

Class 11 Physics Practice Test: Kinetic Theory of Gases - Kinetic Theory of an Ideal Gas
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9 Questions

1. The number of molecules per unit volume in the sample is 20. The mass of each molecule is 10-20kg. The mean of speed squared is 4m2/s2. What is the value of internal energy of the gas? Assume volume of container is 0.02m3.
2. What is the number of molecules in 3 cubic metre of a gas at 3atm & 27°C?
3. Consider a gas enclosed in a box. Let the walls have an area of 0.01m2. Let’s say a few molecules having their x-component of velocity =2m/s, hit a wall parallel to the yz plane. What will be the value of force on the wall in time dt? Let the number of molecules per unit volume be 10 & mass of each molecule be 10-20kg.
4. Average kinetic energy of a gas depends on which of the following factors?
5. Average kinetic energy of a gas depends on which of the following factors?
6. Boyle’s law can be deduced from kinetic theory. True or False?
7. A container has 3 gases whose mass ratio is 1:3:5. What is the ratio of mean square speed of the molecules of two gases? Their atomic masses are 20u, 30u & 40u corresponding to the order in which the ratios are given.
8. Consider a gas inside a box. It exerts some pressure on its walls. Find this value. GIven that number of molecules per unit volume be 20, mass of each molecule 10-20kg, vx2 = 1m2/s2.
9. Boyle’s law can be deduced from kinetic theory. True or False?

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