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- 1. Multiple Choice
Three magnets A, B and C were dipped one by one in a heap of iron filing. Fig. 13.3 shows the amount of the iron filing sticking to them. The strength of these magnets will be
A>B>C
A<B<C
A=B=C
A<B>C
- 2. Multiple Choice
What is a natural magnet known as?
A) Toroid
B) Lodestone
C) Haematite
D) Solenoid
- 3. Multiple Choice
Which of the following statements is true?
A) The north pole of a magnet will attract the north pole of another magnet.
B) Artificial magnets can be made from non-magnetic materials also.
C) Lodestone is an artificial magnet.
D) Isolated magnetic poles do not exist.
- 4. Multiple Choice
In which direction does a magnet always point when suspended freely?
A) South-West
B) North-South
C) East-West
D) West-South
- 5. Multiple Choice
Where is the force of attraction of a magnet the maximum?
A) At all sides
B) All over the magnet
C) At its poles
D) At its centre
- 6. Multiple Choice
What is the special property of magnetic substances?
A) They are repelled by magnets.
B) They are attracted by magnets.
C) They are both attracted and repelled by magnets.
D) They cannot be made into magnets.
- 7. Multiple Choice
Which of the following will NOT be attracted by a magnet?
A) Iron
B) Nickel
C) Gold
D) Cobalt
- 8. Multiple Choice
A How is a compass useful to us?
A) In finding the altitude of a place
B) In finding only the north of a place
C) In finding all the directions of a place
D) In making artificial magnets
- 9. Multiple Choice
Which of the following ways will NOT cause a magnet to lose its magnetism?
A) Heating it strongly over a flame
B) Dropping it on the floor repeatedly
C) Coating it with a layer of oil
D) Hitting it with a hammer repeatedly
- 10. Multiple Choice
a natural magnet
magnetite
horse shoe
circular
U shaped
- 11. Multiple Choice
there are how many poles in a magnet
1
5
3
2
- 12. Multiple Choice
_______ is a natural magnet
Magnetite
Iron
Poles
- 13. Multiple Choice
All natural magnets are
Strong magnets
Weak Magnets
Bar shaped magnets
All of these
- 14. Multiple Choice
When two same poles are brought together
They attract each other
They repel each other
They become cold
They align in N-S direction
- 15. Multiple Choice
What is the name of a magnet created by wrapping a current-carrying wire around a ferromagnetic core?
Temporary magnet
Electromagnet
Permanent magnet
- 16. Multiple Choice
Which of the following gets attracted to a magnet?
Copy book
Silver spoon
Comb
Common pins
- 17. Multiple Choice
The North end of the freely suspended magnet points towards -------?
Geographical North
Geographical South
Geographical East
Geographical West
- 18. Multiple Choice
____________is a device used by pilots and navigators used to find the direction.
barometer
thermometer
magnetic compass
none
- 19. Multiple Choice
Which of the following gets demagnetised when a powerful magnet is kept near it
Plastic ruler
Compact disc
Glass tumbler
Wood
- 20. Multiple Choice
electric bell is an example of _____________magnet.
Bar magnet
Cylindrical magnet
Electromagnet
Horseshoe magnet
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