Question Paper
Class / Subject: Class 8 (ICSE) · Science
Chapter: Chapter 11 — Chapter 11: Elements, Compounds and Mixtures
Time Allowed: 32 minutes
Max Marks: 16
1. Where are elements organised? [1]
(A) The periodic table
(B) A random list
(C) Only in textbooks with no order
(D) Nowhere specific
2. What is the symbol for sodium? [1]
(A) Na
(B) S
(C) So
(D) N
3. What is the symbol for chlorine? [1]
(A) Cl
(B) C
(C) Ch
(D) Co
4. What is NaCl? [1]
(A) Table salt, a compound
(B) An element
(C) A mixture only
(D) A type of gas
5. What ratio do compounds form in? [1]
(A) Fixed ratios
(B) Random, variable ratios
(C) No specific ratio
(D) Always 1:100
6. How are mixtures separated? [1]
(A) Physical methods like filtration
(B) Only chemical reactions
(C) They cannot be separated
(D) Only by burning
7. What is distillation? [1]
(A) A method to separate mixtures using boiling points
(B) A method to combine elements
(C) A type of chemical reaction
(D) A type of compound
8. Why classify substances this way? [1]
(A) To predict separation and combination methods
(B) No reason
(C) It's not useful
(D) Only for tests
9. Where are elements organised? [1]
(A) The periodic table
(B) A random list
(C) Only in textbooks with no order
(D) Nowhere specific
10. What is the symbol for sodium? [1]
(A) Na
(B) S
(C) So
(D) N
11. What is the symbol for chlorine? [1]
(A) Cl
(B) C
(C) Ch
(D) Co
12. What is NaCl? [1]
(A) Table salt, a compound
(B) An element
(C) A mixture only
(D) A type of gas
13. What ratio do compounds form in? [1]
(A) Fixed ratios
(B) Random, variable ratios
(C) No specific ratio
(D) Always 1:100
14. How are mixtures separated? [1]
(A) Physical methods like filtration
(B) Only chemical reactions
(C) They cannot be separated
(D) Only by burning
15. What is distillation? [1]
(A) A method to separate mixtures using boiling points
(B) A method to combine elements
(C) A type of chemical reaction
(D) A type of compound
16. Why classify substances this way? [1]
(A) To predict separation and combination methods
(B) No reason
(C) It's not useful
(D) Only for tests