Question Paper
Class / Subject: Class 8 (ICSE) · Science
Chapter: Chapter 17 — Chapter 17: Carbon and Its Compounds
Time Allowed: 32 minutes
Max Marks: 16
1. What is an allotrope? [1]
(A) A different structural form of the same element
(B) A type of compound
(C) A type of mixture
(D) A type of reaction
2. What is an example of a carbon allotrope? [1]
(A) Diamond
(B) Water
(C) Oxygen gas
(D) Salt
3. What is graphite used for? [1]
(A) Pencils
(B) Jewellery only
(C) Drinking water
(D) Nothing useful
4. How many bonds can carbon form? [1]
(A) Four
(B) Two
(C) One
(D) Zero
5. What does carbon's bonding ability allow? [1]
(A) Complex chains and rings
(B) No complex structures
(C) Only simple molecules
(D) Nothing significant
6. What branch of chemistry is based on carbon? [1]
(A) Organic chemistry
(B) Inorganic chemistry only
(C) Physical chemistry only
(D) No specific branch
7. What are examples of carbon compounds essential for life? [1]
(A) Carbohydrates, proteins, fats
(B) Only water
(C) Only minerals
(D) Only metals
8. Why is carbon's bonding important? [1]
(A) It explains the diversity of organic compounds
(B) No reason
(C) It's not important
(D) Only for tests
9. What is an allotrope? [1]
(A) A different structural form of the same element
(B) A type of compound
(C) A type of mixture
(D) A type of reaction
10. What is an example of a carbon allotrope? [1]
(A) Diamond
(B) Water
(C) Oxygen gas
(D) Salt
11. What is graphite used for? [1]
(A) Pencils
(B) Jewellery only
(C) Drinking water
(D) Nothing useful
12. How many bonds can carbon form? [1]
(A) Four
(B) Two
(C) One
(D) Zero
13. What does carbon's bonding ability allow? [1]
(A) Complex chains and rings
(B) No complex structures
(C) Only simple molecules
(D) Nothing significant
14. What branch of chemistry is based on carbon? [1]
(A) Organic chemistry
(B) Inorganic chemistry only
(C) Physical chemistry only
(D) No specific branch
15. What are examples of carbon compounds essential for life? [1]
(A) Carbohydrates, proteins, fats
(B) Only water
(C) Only minerals
(D) Only metals
16. Why is carbon's bonding important? [1]
(A) It explains the diversity of organic compounds
(B) No reason
(C) It's not important
(D) Only for tests