ICSE Class 6 Physics - Magnetism - Test 4 (Expert)
1. Small iron pieces accidentally fall into a bowl of rice. Which method is best to remove them?
A. Add more rice
B. Use a magnet
C. Use a candle flame
2. A student dips a bar magnet into a box of pins. More pins stick near the two ends because:
A. The centre has no matter
B. The ends are made of plastic
C. The poles are strongest
3. End A of a magnet repels the north pole of another magnet. End A must be:
A. North pole
B. South pole
C. Non-magnetic end
4. An unknown pole of a magnet attracts the north pole of a compass needle. The unknown pole is most likely:
A. North pole
B. South pole
C. A wooden pole
5. A compass kept near a speaker gives a wrong direction because the speaker may contain:
A. A thermometer
B. Plain paper
C. A magnet
6. A magnet under a sheet of paper moves iron filings placed above the paper. This shows that magnetic force can:
A. Act through paper
B. Act only by touching
C. Change paper into iron
7. Which material is most likely to reduce the effect of a magnet placed behind it?
A. Thin paper
B. Thick iron sheet
C. Cotton cloth
8. A magnet is strongly heated in a flame. What may happen to it?
A. It becomes a better compass always
B. It attracts only glass
C. It may lose magnetism
9. A student hammers a magnet repeatedly. The magnet may become:
A. Weaker
B. Transparent
C. More wooden
10. A bar magnet should be stored with soft iron pieces called keepers because they:
A. Make the magnet heavier only
B. Help preserve magnetism
C. Remove its poles
11. A student wants to make a simple magnetic needle. The student should rub the needle with a magnet:
A. Back and forth randomly
B. Only at the centre once
C. In the same direction many times
12. An iron pin sticks to a magnet and then attracts another pin for a short time. The first pin acts as a:
A. Temporary magnet
B. Permanent glass object
C. Non-magnetic liquid
13. Which material is commonly used to make permanent magnets?
A. Soft wax
B. Steel
C. Rubber
14. Soft iron is useful for making temporary magnets because it:
A. Is never attracted by magnets
B. Is always transparent
C. Gains and loses magnetism easily
15. In an iron filings pattern around a bar magnet, the lines are closest near the:
A. Poles
B. Wooden table
C. Label only
16. Curved patterns formed by iron filings around a magnet help us understand:
A. The colour of air
B. The magnetic field
C. The boiling point of iron
17. Which is the best way to protect a magnet?
A. Drop it often
B. Heat it strongly
C. Store it properly with keepers
18. A freely suspended magnet turns and finally stops in the north-south direction because it aligns with:
A. Earth's magnetic field
B. The nearest wall
C. The colour of the thread
19. A bar magnet is cut into three pieces. Each piece will have:
A. Only one pole
B. Both north and south poles
C. No magnetic property at all
20. A substance repels one pole of a magnet. This proves that the substance is:
A. Definitely wood
B. Definitely plastic
C. A magnet