ICSE Class 6 Physics - Magnetism - Test 3 (Advanced)
1. A mixture contains iron nails, paper pieces, and plastic buttons. A magnet is used to pick out only the nails because nails are:
A. Transparent
B. Magnetic
C. Luminous
2. When paper clips are brought near a bar magnet, they collect more at the two ends. This shows that:
A. The middle is the strongest part
B. Magnets have no poles
C. Magnetic force is strongest at the poles
3. Two magnet ends push away from each other. What can we say about these two ends?
A. They are like poles
B. They are unlike poles
C. One of them is wood
4. The north-seeking end of one magnet attracts one end of another magnet. The attracted end is most likely:
A. Another north pole
B. A south pole
C. A plastic end
5. A compass needle moves when a bar magnet is brought near it. This happens because:
A. The needle becomes transparent
B. The compass produces heat
C. The magnet affects the needle
6. An iron nail attracts small pins after being rubbed several times with a magnet. The nail has become:
A. Temporarily magnetized
B. Completely non-magnetic
C. A wooden object
7. To magnetize an iron needle by rubbing, the magnet should be moved:
A. Randomly in all directions
B. Repeatedly in one direction
C. Only once across the middle
8. A magnet may lose its strength if it is:
A. Kept safely with a keeper
B. Used to attract pins
C. Heated or hammered
9. Soft iron keepers are used with magnets mainly to:
A. Protect their magnetic strength
B. Make them transparent
C. Change them into plastic
10. The pattern formed by iron filings around a magnet shows the:
A. Shape of sound waves
B. Magnetic field pattern
C. Temperature of the magnet
11. Iron filings make a pattern around a magnet because they:
A. Melt into lines
B. Produce sunlight
C. Get affected by magnetic force
12. A magnet attracts pins kept under a thin cardboard sheet. This shows that magnetic force can pass through:
A. Some non-magnetic materials
B. Only empty space with no material
C. Only hot water
13. A magnet attracts fewer pins when it is moved farther away from them because magnetic force becomes:
A. Stronger with distance
B. Weaker with distance
C. Equal to light energy
14. A bar magnet is tied with a thread and allowed to rotate freely. It can be used to find:
A. The mass of an object
B. The temperature of air
C. The north-south direction
15. A compass gives a wrong direction when kept near a strong magnet because the magnet:
A. Disturbs the compass needle
B. Changes the compass into glass
C. Removes all directions from Earth
16. A magnet used in a cupboard door catch works for a long time because it is usually a:
A. Temporary magnet only
B. Permanent magnet
C. Non-magnetic stone
17. An iron nail that attracts pins only for a short time after touching a magnet is an example of a:
A. Natural luminous object
B. Permanent magnet only
C. Temporary magnet
18. Why should a magnet not be dropped on the floor again and again?
A. It may become weaker
B. It will turn into water
C. It will become transparent
19. We cannot see a magnetic field directly, but we can observe it using:
A. A thermometer only
B. Iron filings
C. Plain water only
20. Which statement is correct about magnets?
A. Magnets attract every metal strongly
B. Magnets attract only wooden objects
C. Magnets attract only certain materials