Kinetic Theory of Gases Assumptions NEET Questions

Physics - Kinetic Theory of Gases

Kinetic Theory of Gases Assumptions MCQ Questions


13.
The kinetic theory assumption that collisions are elastic implies that during collisions:
A.
Total kinetic energy is conserved
B.
Total kinetic energy decreases
C.
Total kinetic energy increases
D.
Momentum is not conserved
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ANSWER :
A. Total kinetic energy is conserved
14.
Which assumption of kinetic theory leads to the ideal gas equation PV = µRT?
A.
Intermolecular forces are negligible and molecules occupy negligible volume
B.
Molecules are stationary
C.
Collisions are inelastic
D.
All molecules have identical velocities
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ANSWER :
A. Intermolecular forces are negligible and molecules occupy negligible volume
15.
According to kinetic theory, the pressure exerted by a gas on its container walls is due to:
A.
Static repulsion of molecules near the wall
B.
Temperature gradient near the walls
C.
Gravitational attraction between molecules and walls
D.
Momentum transfer during molecular collisions with the walls
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ANSWER :
D. Momentum transfer during molecular collisions with the walls
16.
Kinetic theory assumes that gas molecules in a container move in:
A.
Only horizontal directions
B.
Predominantly upward directions due to gravity
C.
Downward directions due to gravity
D.
All directions with equal probability (isotropic motion)
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ANSWER :
D. All directions with equal probability (isotropic motion)
17.
In an ideal gas as per kinetic theory, the internal energy depends on:
A.
Volume only
B.
Pressure only
C.
Both pressure and volume
D.
Temperature only
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ANSWER :
D. Temperature only
18.
Kinetic theory predicts that at the same temperature, molecules of different ideal gases have:
A.
Same root mean square speed
B.
Same molecular mass
C.
Same average kinetic energy per molecule
D.
Same number of molecules per unit volume
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ANSWER :
C. Same average kinetic energy per molecule