Gas Laws and Ideal Gas Equation MCQs
Gas Laws and Ideal Gas Equation MCQs
Class: CBSE Class 11
Subject: Physics
Section: Behaviour of Perfect Gas & Kinetic Theory
Topic: Gas Laws and Ideal Gas Equation MCQs
Board: CBSE Board Examination (Strictly NCERT Based)
Subject: Physics
Section: Behaviour of Perfect Gas & Kinetic Theory
Topic: Gas Laws and Ideal Gas Equation MCQs
Board: CBSE Board Examination (Strictly NCERT Based)
Q1. Boyle’s law states that at constant temperature:
Answer: B — Pressure is inversely proportional to volume at constant temperature.
Q2. Charles’s law relates volume with:
Answer: B — Volume is directly proportional to absolute temperature.
Q3. Gay‑Lussac’s law relates pressure with:
Answer: B — Pressure ∝ Temperature at constant volume.
Q4. Ideal gas equation is:
Answer: B — Combines all gas laws.
Q5. SI unit of universal gas constant:
Answer: D — 1 J = 1 Pa·m³.
Q6. Avogadro’s law: V ∝
Answer: C — Volume ∝ moles.
Q7. Combined gas law:
Answer: C.
Q8. Absolute zero is:
Answer: A.
Q9. STP temperature:
Answer: B.
Q10. STP pressure:
Answer: A.
Q11. Molar volume at STP:
Answer: B.
Q12. R value:
Answer: D.
Q13. Ideal gas molecule volume:
Answer: B.
Q14. Intermolecular force in ideal gas:
Answer: B.
Q15. Density formula:
Answer: A.
Q16. If T doubles (V constant):
Answer: B.
Q17. If V doubles (T constant):
Answer: B.
Q18. Gas thermometer uses:
Answer: B.
Q19. Real gases deviate at:
Answer: B.
Q20. Compressibility highest in:
Answer: C.
Q21. PV graph shape:
Answer: C.
Q22. V‑T graph:
Answer: B.
Q23. P‑T graph:
Answer: A.
Q24. Universal gas constant same for:
Answer: A.
Q25. Temperature proportional to:
Answer: A.
Q26. Ideal gas obeys exactly at:
Answer: C.
Q27. Number of molecules in 1 mole:
Answer: B.
Q28. Pressure arises due to:
Answer: B.
Q29. Absolute temperature scale:
Answer: B.
Q30. Boyle temperature is where gas:
Answer: B.
