ICSE Class 6 Physics - Force - Test 4 (Expert)
1. Two students push a chair from opposite sides with equal force. The chair does not move because the forces are:
A. Magnetic
B. Balanced
C. Only gravitational
2. A box is pulled with 20 N to the left and 12 N to the right. The net force is:
A. 32 N to the right
B. 8 N to the right
C. 8 N to the left
3. Two children pull a cart in the same direction with forces of 9 N and 11 N. The total force is:
A. 20 N
B. 2 N
C. 99 N
4. A sponge becomes flat when pressed between the palms. This shows that force can:
A. Remove mass
B. Change shape
C. Change colour into light
5. A football lying on the ground starts moving when kicked. This happens because:
A. The ball moves without any cause
B. The ball loses its weight
C. A force acts on the ball
6. A ball rolling on the ground stops after some time mainly because of:
A. Friction
B. Reflection
C. Magnetic force only
7. Walking on ice is difficult because the friction between shoes and ice is:
A. Very large
B. Very small
C. Equal to gravity always
8. Sports shoes have rough soles mainly to:
A. Decrease grip completely
B. Remove gravity
C. Increase friction
9. Polishing a wooden surface usually:
A. Reduces friction
B. Makes friction infinite
C. Changes wood into metal
10. A matchstick lights when rubbed on a matchbox because friction produces:
A. Ice
B. Heat
C. Pure water
11. Grease is applied to bicycle chains mainly to:
A. Increase friction greatly
B. Make the chain disappear
C. Reduce friction
12. Rain drops fall down towards the ground because of:
A. Gravitational force
B. Muscular force
C. Electrostatic force only
13. A magnet attracts iron pins through a thin sheet of paper. This shows magnetic force can act:
A. Only by touching iron directly
B. Through some materials
C. Only when heated
14. A rubbed balloon attracts small paper pieces. The force involved is:
A. Gravitational force only
B. Muscular force
C. Electrostatic force
15. Which situation shows a contact force?
A. A hand pushing a table
B. Earth pulling the Moon
C. A magnet attracting iron without touch
16. A badminton racket hits a shuttlecock and sends it back. This shows that force can change:
A. The shuttlecock into liquid
B. The direction of motion
C. The colour of air
17. Which example shows friction as useful?
A. Machine parts wearing out
B. Shoe soles becoming thin
C. Brakes stopping a bicycle
18. Which example shows friction as harmful?
A. Machine parts wearing out
B. Walking without slipping
C. Writing with a pencil
19. When an object is hung from a spring balance, the spring stretches because:
A. The object has no weight
B. A force acts on the spring
C. The spring becomes a magnet always
20. A heavy cupboard does not move even when pushed gently because the applied force is balanced by:
A. Light
B. Sound
C. Frictional force