Question Paper
Class / Subject: Class 7 (CBSE) · Science
Chapter: Chapter 4 — Chapter 4: The World of Metals and Non-metals
Time Allowed: 15 minutes
Max Marks: 6
1. The ability of a metal to be drawn into wires is called: [1]
(A) ductility
(B) malleability
(C) lustre
(D) sonority
2. Sodium and potassium are unusual metals because they are: [1]
(A) soft enough to be cut with a knife
(B) extremely hard
(C) not conductors
(D) non-metallic
3. Metals producing a ringing sound when struck are described as: [1]
(A) sonorous
(B) malleable
(C) ductile
(D) lustrous
4. Non-metals are generally: [1]
(A) poor conductors of electricity
(B) good conductors of electricity
(C) always liquid
(D) always malleable
5. Name one non-metal that conducts electricity: [1]
(A) Graphite
(B) Sulphur
(C) Oxygen
(D) Nitrogen
6. The non-metal essential for human respiration is: [1]
(A) Oxygen
(B) Sulphur
(C) Carbon
(D) Chlorine