Kinetic Theory of Gases MCQs
Kinetic Theory of Gases MCQs
Class: CBSE Class 11
Subject: Physics
Section: Behaviour of Perfect Gas & Kinetic Theory
Topic: Kinetic Theory of Gases MCQs
Board: CBSE Board Examination (Strictly NCERT Based)
Subject: Physics
Section: Behaviour of Perfect Gas & Kinetic Theory
Topic: Kinetic Theory of Gases MCQs
Board: CBSE Board Examination (Strictly NCERT Based)
Q1. Kinetic theory explains properties of:
Answer: C
Explanation: Kinetic theory deals with molecular motion in gases.
Explanation: Kinetic theory deals with molecular motion in gases.
Q2. Gas molecules are assumed to be:
Answer: B
Explanation: Gas molecules move randomly in all directions.
Explanation: Gas molecules move randomly in all directions.
Q3. Collisions between gas molecules are:
Answer: C
Explanation: Total kinetic energy is conserved in collisions.
Explanation: Total kinetic energy is conserved in collisions.
Q4. Pressure of a gas is due to:
Answer: Molecular collisions with walls.
Q5. Average kinetic energy depends on:
Answer: Absolute temperature.
Q6. SI unit of temperature:
Answer: Kelvin.
Q7. RMS speed depends on:
Answer: Temperature and mass.
Q8. Boyle’s law holds at:
Answer: Constant temperature.
Q9. Mean free path is:
Answer: Average distance between collisions.
Q10. Ideal gas obeys:
Answer: PV = nRT.
Q11. Internal energy of ideal gas depends on:
Answer: Temperature only.
Q12. Boltzmann constant relates:
Answer: Energy and temperature.
Q13. Degrees of freedom of monoatomic gas:
Answer: 3.
Q14. Degrees of freedom of diatomic gas:
Answer: 5.
Q15. Equipartition theorem relates:
Answer: Energy with degrees of freedom.
Q16. Mean speed is:
Answer: Less than RMS speed.
Q17. Most probable speed:
Answer: Least among three speeds.
Q18. RMS speed ∝
Answer: √T.
Q19. Gas pressure decreases if:
Answer: Temperature decreases.
Q20. Avogadro’s number is:
Answer: 6.022×10²³.
Q21. Kinetic energy per molecule is:
Answer: (3/2)kT.
Q22. Gas law combining P, V, T:
Answer: Ideal gas law.
Q23. Absolute zero implies:
Answer: Minimum molecular motion.
Q24. Higher temperature means:
Answer: Higher molecular speed.
Q25. Gas molecules volume is assumed:
Answer: Negligible.
Q26. Real gases deviate at:
Answer: High pressure.
Q27. RMS speed highest for:
Answer: Hydrogen.
Q28. Unit of Boltzmann constant:
Answer: J/K.
Q29. Pressure increases if:
Answer: Molecular collisions increase.
Q30. Kinetic theory assumes intermolecular force:
Answer: Negligible.
