Question Paper
Class / Subject: Class 8 (SSC) · Science (सामान्य विज्ञान)
Chapter: Chapter 6 — Chapter 6: Composition of Matter
Time Allowed: 32 minutes
Max Marks: 16
1. What is an element? [1]
(A) A pure substance with one type of atom
(B) A combination of substances
(C) Only a liquid
(D) Only a gas
2. What is an example of an element? [1]
(A) Oxygen
(B) Water
(C) Air
(D) Salt water
3. What is a compound? [1]
(A) Elements chemically combined in fixed proportions
(B) A physical mixture only
(C) A single atom type only
(D) Nothing specific
4. What is an example of a compound? [1]
(A) Water (H2O)
(B) Oxygen
(C) Sand
(D) Air
5. What is a mixture? [1]
(A) Substances physically combined, not chemically bonded
(B) Elements chemically combined
(C) A single pure substance
(D) Nothing specific
6. What is a homogeneous mixture? [1]
(A) Uniform throughout, like saltwater
(B) Non-uniform, like a salad
(C) A pure element
(D) A compound
7. What is a heterogeneous mixture? [1]
(A) Non-uniform, like a salad
(B) Uniform throughout
(C) A pure element
(D) A compound
8. Why learn about matter's composition? [1]
(A) To understand elements, compounds, and mixtures
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is an element? [1]
(A) A pure substance with one type of atom
(B) A combination of substances
(C) Only a liquid
(D) Only a gas
10. What is an example of an element? [1]
(A) Oxygen
(B) Water
(C) Air
(D) Salt water
11. What is a compound? [1]
(A) Elements chemically combined in fixed proportions
(B) A physical mixture only
(C) A single atom type only
(D) Nothing specific
12. What is an example of a compound? [1]
(A) Water (H2O)
(B) Oxygen
(C) Sand
(D) Air
13. What is a mixture? [1]
(A) Substances physically combined, not chemically bonded
(B) Elements chemically combined
(C) A single pure substance
(D) Nothing specific
14. What is a homogeneous mixture? [1]
(A) Uniform throughout, like saltwater
(B) Non-uniform, like a salad
(C) A pure element
(D) A compound
15. What is a heterogeneous mixture? [1]
(A) Non-uniform, like a salad
(B) Uniform throughout
(C) A pure element
(D) A compound
16. Why learn about matter's composition? [1]
(A) To understand elements, compounds, and mixtures
(B) No reason
(C) It's not useful
(D) Only for tests