ICSE Class 6 Physics - Matter - Test 4 (Expert)
1. A little air is pumped into an empty closed box. After some time, the air will be found:
A. Only at the bottom
B. Only near the opening
C. Throughout the box
2. A syringe filled with air can be pushed more easily than a syringe filled with water because:
A. Air has more space between particles
B. Water has no particles
C. Air is a solid
3. A tight metal lid on a glass jar can be loosened by pouring warm water over it because the metal lid:
A. Freezes immediately
B. Expands on heating
C. Changes into gas
4. A balloon filled with air becomes smaller when kept in a refrigerator. This happens because air:
A. Turns into a solid stone
B. Loses all mass
C. Contracts on cooling
5. Naphthalene balls kept in a cupboard slowly become smaller without forming liquid. This is due to:
A. Sublimation
B. Condensation
C. Freezing
6. A glass bottle filled completely with water may crack when kept in a freezer because water:
A. Changes into smoke
B. Expands on freezing
C. Loses all volume
7. A coloured liquid in a thin tube rises when the bulb below it is warmed. This shows that liquids:
A. Have no volume
B. Cannot be heated
C. Expand on heating
8. Which state of matter changes both its shape and volume easily?
A. Gas
B. Solid
C. Liquid
9. Oil is poured from a round bottle into a square tin. Which property of oil changes?
A. Mass only
B. Shape
C. Amount of matter
10. A metal cube is placed in a bowl. It does not take the shape of the bowl because it is:
A. A gas
B. A liquid
C. A solid
11. Water vapour touching a cold surface changes into liquid water. This change is called:
A. Condensation
B. Melting
C. Sublimation
12. If incense is lit in one part of a room, its smell spreads because particles of gas:
A. Remain fixed in one place
B. Move and mix with air
C. Change into solid stones
13. Electric wires appear slightly loose in summer because the metal wire:
A. Freezes in heat
B. Shrinks on heating
C. Expands on heating
14. Electric wires may become tighter in winter because the metal wire:
A. Contracts on cooling
B. Turns into liquid
C. Becomes weightless
15. Water bubbling strongly in a kettle is changing into steam by:
A. Freezing
B. Boiling
C. Cutting
16. A brick keeps its shape because its particles are:
A. Very far apart and free
B. Completely absent
C. Closely packed
17. Honey can be poured slowly from a spoon because its particles:
A. Can move past one another
B. Are fixed like a brick
C. Do not occupy space
18. Gas from a small container is released into a bigger closed jar. What happens to the gas?
A. It remains only in the small area
B. It spreads to fill the bigger jar
C. It immediately becomes ice
19. A drop of ink spreads in water. This supports the idea that matter is made of:
A. Large stones only
B. Shadows only
C. Tiny particles
20. The smell of hot food spreads faster than cold food mainly because particles in warm air:
A. Move faster
B. Stop moving
C. Become solid