Question Paper
Class / Subject: Class 10 (ICSE) · Chemistry
Chapter: Chapter 9 — Chapter 9: Study of Compounds - Ammonia
Time Allowed: 32 minutes
Max Marks: 16
1. How is ammonia prepared in the lab? [1]
(A) Heating ammonium salt with a base
(B) Heating ammonium salt alone
(C) Mixing nitrogen and oxygen
(D) Heating water with salt
2. What industrial process makes ammonia? [1]
(A) Haber process
(B) Contact process
(C) Ostwald process
(D) Solvay process
3. What is a physical property of ammonia gas? [1]
(A) Colourless with pungent smell
(B) Coloured with no smell
(C) Odourless and colourless
(D) Coloured and odourless
4. Is ammonia denser or lighter than air? [1]
(A) Lighter
(B) Denser
(C) Same density
(D) No density
5. What forms when ammonia dissolves in water? [1]
(A) Ammonium hydroxide
(B) Ammonium chloride
(C) Nitric acid
(D) Sulphuric acid
6. What type of base is ammonia? [1]
(A) A weak base
(B) A strong base
(C) An acid
(D) Neutral
7. What is a major use of ammonia? [1]
(A) Manufacturing fertilisers
(B) Only cooking
(C) Only cleaning
(D) No practical use
8. Why study ammonia? [1]
(A) To understand its preparation, properties and uses
(B) No reason
(C) It's not useful
(D) Only for tests
9. How is ammonia prepared in the lab? [1]
(A) Heating ammonium salt with a base
(B) Heating ammonium salt alone
(C) Mixing nitrogen and oxygen
(D) Heating water with salt
10. What industrial process makes ammonia? [1]
(A) Haber process
(B) Contact process
(C) Ostwald process
(D) Solvay process
11. What is a physical property of ammonia gas? [1]
(A) Colourless with pungent smell
(B) Coloured with no smell
(C) Odourless and colourless
(D) Coloured and odourless
12. Is ammonia denser or lighter than air? [1]
(A) Lighter
(B) Denser
(C) Same density
(D) No density
13. What forms when ammonia dissolves in water? [1]
(A) Ammonium hydroxide
(B) Ammonium chloride
(C) Nitric acid
(D) Sulphuric acid
14. What type of base is ammonia? [1]
(A) A weak base
(B) A strong base
(C) An acid
(D) Neutral
15. What is a major use of ammonia? [1]
(A) Manufacturing fertilisers
(B) Only cooking
(C) Only cleaning
(D) No practical use
16. Why study ammonia? [1]
(A) To understand its preparation, properties and uses
(B) No reason
(C) It's not useful
(D) Only for tests