Question Paper
Class / Subject: Class 9 (ICSE) · Chemistry
Chapter: Chapter 7 — Chapter 7: Gas Laws
Time Allowed: 32 minutes
Max Marks: 16
1. What does Boyle's Law state? [1]
(A) Pressure and volume are inversely proportional at constant temperature
(B) Pressure and volume are directly proportional
(C) Volume and temperature are inversely proportional
(D) No relationship exists
2. What is Boyle's Law formula? [1]
(A) P1V1 = P2V2
(B) V1/T1 = V2/T2
(C) P1/T1 = P2/T2
(D) P1+V1 = P2+V2
3. What does Charles's Law state? [1]
(A) Volume and temperature are directly proportional at constant pressure
(B) Volume and temperature are inversely proportional
(C) Pressure and volume are directly proportional
(D) No relationship exists
4. What is Charles's Law formula? [1]
(A) V1/T1 = V2/T2
(B) P1V1 = P2V2
(C) P1/T1 = P2/T2
(D) P1+V1 = P2+V2
5. What does the combined gas law do? [1]
(A) Merges pressure, volume and temperature relationships
(B) Only considers pressure
(C) Only considers volume
(D) Only considers temperature
6. Why does a balloon expand when heated? [1]
(A) Charles's Law: volume increases with temperature
(B) Boyle's Law only
(C) No specific reason
(D) Balloons don't expand when heated
7. Why do tyre pressures change with weather? [1]
(A) Gas laws relating temperature and pressure
(B) No reason
(C) Random chance
(D) Tyres are unaffected by temperature
8. Why study gas laws? [1]
(A) To predict how gases behave under different conditions
(B) No reason
(C) It's not useful
(D) Only for tests
9. What does Boyle's Law state? [1]
(A) Pressure and volume are inversely proportional at constant temperature
(B) Pressure and volume are directly proportional
(C) Volume and temperature are inversely proportional
(D) No relationship exists
10. What is Boyle's Law formula? [1]
(A) P1V1 = P2V2
(B) V1/T1 = V2/T2
(C) P1/T1 = P2/T2
(D) P1+V1 = P2+V2
11. What does Charles's Law state? [1]
(A) Volume and temperature are directly proportional at constant pressure
(B) Volume and temperature are inversely proportional
(C) Pressure and volume are directly proportional
(D) No relationship exists
12. What is Charles's Law formula? [1]
(A) V1/T1 = V2/T2
(B) P1V1 = P2V2
(C) P1/T1 = P2/T2
(D) P1+V1 = P2+V2
13. What does the combined gas law do? [1]
(A) Merges pressure, volume and temperature relationships
(B) Only considers pressure
(C) Only considers volume
(D) Only considers temperature
14. Why does a balloon expand when heated? [1]
(A) Charles's Law: volume increases with temperature
(B) Boyle's Law only
(C) No specific reason
(D) Balloons don't expand when heated
15. Why do tyre pressures change with weather? [1]
(A) Gas laws relating temperature and pressure
(B) No reason
(C) Random chance
(D) Tyres are unaffected by temperature
16. Why study gas laws? [1]
(A) To predict how gases behave under different conditions
(B) No reason
(C) It's not useful
(D) Only for tests