Question Paper
Class / Subject: Class 7 (ICSE) · Science
Chapter: Chapter 10 — Chapter 10: Elements, Compounds and Mixtures
Time Allowed: 32 minutes
Max Marks: 16
1. What is an element? [1]
(A) A pure substance of one atom type
(B) A combination of substances
(C) A type of mixture
(D) A type of force
2. What is an example of an element? [1]
(A) Gold
(B) Water
(C) Salt
(D) Air
3. What is a compound? [1]
(A) Elements combined chemically
(B) A single element
(C) A mixture without bonding
(D) A type of force
4. What is an example of a compound? [1]
(A) Water (H2O)
(B) Gold
(C) Oxygen gas
(D) Air
5. What is a mixture? [1]
(A) Substances combined physically
(B) A single element
(C) A compound
(D) A type of force
6. What is an example of a mixture? [1]
(A) Air
(B) Water
(C) Salt (NaCl)
(D) Gold
7. How can mixtures be separated? [1]
(A) Physical methods like filtration
(B) Only chemical reactions
(C) They cannot be separated
(D) Only by burning
8. How can compounds be separated? [1]
(A) Chemical reactions
(B) Simple physical methods only
(C) They cannot be separated
(D) Only by sorting
9. What is an element? [1]
(A) A pure substance of one atom type
(B) A combination of substances
(C) A type of mixture
(D) A type of force
10. What is an example of an element? [1]
(A) Gold
(B) Water
(C) Salt
(D) Air
11. What is a compound? [1]
(A) Elements combined chemically
(B) A single element
(C) A mixture without bonding
(D) A type of force
12. What is an example of a compound? [1]
(A) Water (H2O)
(B) Gold
(C) Oxygen gas
(D) Air
13. What is a mixture? [1]
(A) Substances combined physically
(B) A single element
(C) A compound
(D) A type of force
14. What is an example of a mixture? [1]
(A) Air
(B) Water
(C) Salt (NaCl)
(D) Gold
15. How can mixtures be separated? [1]
(A) Physical methods like filtration
(B) Only chemical reactions
(C) They cannot be separated
(D) Only by burning
16. How can compounds be separated? [1]
(A) Chemical reactions
(B) Simple physical methods only
(C) They cannot be separated
(D) Only by sorting