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- 1. Multiple Choice
When a magnet is suspended freely it always aligns itself in -------- direction?
North
N-S
N-W
N-E
- 2. Multiple Choice
----- is the only natural magnet.
Magnetite
Ebonite
Cobalt
Nickel
- 3. Multiple Choice
Which of the following cannot be used to make a magnet?
Cobalt
Iron
Ebonite
Steel
- 4. Multiple Choice
Which of the following is not a non-magnetic substance?
Glass
Wood
China ware
Nickel
- 5. Multiple Choice
Which of the following gets attracted to a magnet?
Copy book
Silver spoon
Comb
Common pins
- 6. Multiple Choice
When a magnet is placed on a plastic plate with common pins spread on it, then ----
Pins stick all around the magnet
Pins stick at the middle of the magnet
Pins stick at the ends of the magnet
None
- 7. Multiple Choice
The North end of the freely suspended magnet points towards -------?
Geographical North
Geographical South
Geographical East
Geographical West
- 8. Multiple Choice
The south pole of the freely suspended magnet points towards -------?
Geographical North
Geographical South
Geographical East
Geographical West
- 9. Multiple Choice
like poles of magnets -------- each other.
Attract
Repel
Both a and b
None
- 10. Multiple Choice
Unlike poles of magnets -------- each other.
Attract
Repel
Both a and b
None
- 11. Multiple Choice
----- is the surest test of magnetism.
Attraction
Rotation
Repulsion
None
- 12. Multiple Choice
When a N pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, then it -----------?
a)Attracts
b)Repels
c)It rotates
d)None
- 13. Multiple Choice
When a S pole a magnet in brought near the N pole of a freely suspended magnetic needle, then it -----------?
None
Repels
It rotates
Attracts
- 14. Multiple Choice
____________is a device used by pilots and navigators used to find the direction.
barometer
thermometer
magnetic compass
none
- 15. Multiple Choice
Magnetism of a magnet is lost by doing which of the following acts
(a)Keeping in a box
(b)Heating
(c)Hammering
(d)Both b and c
- 16. Multiple Choice
Which of the following gets demagnetised when a powerful magnet is kept near it
Plastic ruler
Compact disc
Glass tumbler
Wood
- 17. Multiple Choice
Which of the following does not get demagnetised when a powerful magnet is kept near it
a)CD
b)music system
c)Cell phone
d)Comb
- 18. Multiple Choice
electric bell is an example of _____________magnet.
Bar magnet
Cylindrical magnet
Electromagnet
Horseshoe magnet
- 19. Multiple Choice
--------type of magnet is used in cranes to lift heavy containers from ships.
a)Bar magnet
b)Cylindrical magnet
c)Electromagnet
d)Horseshoe magnet
- 20. Multiple Choice
The nerves in our body transmits messages as __________
Electrical impulses
Radio waves
Electromagnetic waves
None
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