Question Paper
Class / Subject: Class 8 (ICSE) · Science
Chapter: Chapter 15 — Chapter 15: Hydrogen
Time Allowed: 32 minutes
Max Marks: 16
1. What is hydrogen's key characteristic? [1]
(A) Lightest and most abundant element
(B) Heaviest element
(C) Rarest element
(D) A metal
2. What are hydrogen's properties? [1]
(A) Colourless, odourless, highly flammable
(B) Coloured and heavy
(C) Odorous and non-flammable
(D) Solid at room temperature
3. What form does hydrogen exist in normally? [1]
(A) H2 (diatomic molecule)
(B) H (single atom)
(C) H3 (triatomic)
(D) It doesn't exist naturally
4. How can hydrogen be prepared in a lab? [1]
(A) Reacting metals with dilute acids
(B) Only through electricity
(C) Only through heating water
(D) It cannot be prepared
5. What metal is commonly used to prepare hydrogen? [1]
(A) Zinc
(B) Gold
(C) Silver
(D) Platinum
6. What is hydrogen used for? [1]
(A) Manufacturing ammonia
(B) Only decoration
(C) Nothing useful
(D) Only for balloons
7. What potential future use does hydrogen have? [1]
(A) A clean fuel source
(B) No future use
(C) Only historical use
(D) Only decorative use
8. Why is hydrogen important to study? [1]
(A) Its potential role in clean energy
(B) No reason
(C) It's not important
(D) Only for tests
9. What is hydrogen's key characteristic? [1]
(A) Lightest and most abundant element
(B) Heaviest element
(C) Rarest element
(D) A metal
10. What are hydrogen's properties? [1]
(A) Colourless, odourless, highly flammable
(B) Coloured and heavy
(C) Odorous and non-flammable
(D) Solid at room temperature
11. What form does hydrogen exist in normally? [1]
(A) H2 (diatomic molecule)
(B) H (single atom)
(C) H3 (triatomic)
(D) It doesn't exist naturally
12. How can hydrogen be prepared in a lab? [1]
(A) Reacting metals with dilute acids
(B) Only through electricity
(C) Only through heating water
(D) It cannot be prepared
13. What metal is commonly used to prepare hydrogen? [1]
(A) Zinc
(B) Gold
(C) Silver
(D) Platinum
14. What is hydrogen used for? [1]
(A) Manufacturing ammonia
(B) Only decoration
(C) Nothing useful
(D) Only for balloons
15. What potential future use does hydrogen have? [1]
(A) A clean fuel source
(B) No future use
(C) Only historical use
(D) Only decorative use
16. Why is hydrogen important to study? [1]
(A) Its potential role in clean energy
(B) No reason
(C) It's not important
(D) Only for tests