Question Paper
Class / Subject: Class 10 (ICSE) · Chemistry
Chapter: Chapter 8 — Chapter 8: Study of Compounds - Hydrogen Chloride
Time Allowed: 32 minutes
Max Marks: 16
1. How is HCl gas prepared in the lab? [1]
(A) Heating NaCl with concentrated H2SO4
(B) Heating NaCl with water only
(C) Heating NaCl alone
(D) Mixing NaCl with oxygen
2. What is a physical property of HCl gas? [1]
(A) Colourless with pungent smell
(B) Coloured with no smell
(C) Odourless and colourless
(D) Coloured and odourless
3. Is HCl gas denser or lighter than air? [1]
(A) Denser
(B) Lighter
(C) Same density
(D) No density
4. What forms when HCl dissolves in water? [1]
(A) Hydrochloric acid
(B) Sodium chloride
(C) Sulphuric acid
(D) Nitric acid
5. What does the fountain experiment demonstrate? [1]
(A) High solubility of HCl in water
(B) Low solubility of HCl
(C) HCl doesn't dissolve
(D) HCl reacts violently with air
6. Does HCl support combustion? [1]
(A) No
(B) Yes
(C) Sometimes
(D) Always
7. What does hydrochloric acid produce with reactive metals? [1]
(A) Hydrogen gas
(B) Oxygen gas
(C) Nitrogen gas
(D) No gas
8. Why study HCl? [1]
(A) To understand its preparation and properties
(B) No reason
(C) It's not useful
(D) Only for tests
9. How is HCl gas prepared in the lab? [1]
(A) Heating NaCl with concentrated H2SO4
(B) Heating NaCl with water only
(C) Heating NaCl alone
(D) Mixing NaCl with oxygen
10. What is a physical property of HCl gas? [1]
(A) Colourless with pungent smell
(B) Coloured with no smell
(C) Odourless and colourless
(D) Coloured and odourless
11. Is HCl gas denser or lighter than air? [1]
(A) Denser
(B) Lighter
(C) Same density
(D) No density
12. What forms when HCl dissolves in water? [1]
(A) Hydrochloric acid
(B) Sodium chloride
(C) Sulphuric acid
(D) Nitric acid
13. What does the fountain experiment demonstrate? [1]
(A) High solubility of HCl in water
(B) Low solubility of HCl
(C) HCl doesn't dissolve
(D) HCl reacts violently with air
14. Does HCl support combustion? [1]
(A) No
(B) Yes
(C) Sometimes
(D) Always
15. What does hydrochloric acid produce with reactive metals? [1]
(A) Hydrogen gas
(B) Oxygen gas
(C) Nitrogen gas
(D) No gas
16. Why study HCl? [1]
(A) To understand its preparation and properties
(B) No reason
(C) It's not useful
(D) Only for tests