Question Paper
Class / Subject: Class 8 (CBSE) · Science
Chapter: Chapter 7 — Chapter 7: Particulate Nature of Matter
Time Allowed: 15 minutes
Max Marks: 6
1. Particles of matter are: [1]
(A) constantly moving
(B) always still
(C) visible to the naked eye
(D) only found in solids
2. Diffusion happens faster when temperature is: [1]
(A) higher
(B) lower
(C) exactly zero
(D) unrelated to diffusion speed
3. Gases can be compressed easily because their particles: [1]
(A) have large spaces between them
(B) are tightly packed
(C) do not move
(D) are chemically different
4. Particles are most tightly packed in a: [1]
(A) solid
(B) liquid
(C) gas
(D) plasma
5. Gases have neither a fixed shape nor volume because their particles: [1]
(A) are far apart and move freely
(B) are tightly packed
(C) do not move at all
(D) are chemically unstable
6. When ice melts into water, the: [1]
(A) particle arrangement changes but the substance remains chemically the same
(B) substance chemically changes into a new one
(C) particles disappear
(D) particles stop moving completely