Question

Single Choice Correct Questions

1. An example of magnetic material is

(1) wooden scale (2) plastic spoon (3) iron nail (4) a leather belt

2. A compass which is used to determine direction, uses

(1) directive property of magnetism (2) attractive property of magnetism

(3) attractive property of electrostatics (4) repulsive property of electrostatics

3. Repulsion test using a magnet helps to

(1) detect the presence of a magnet (2) identify magnetic materials

(3) to detect an iron needle (4) to detect a cobalt needle

4. To find the north pole of a bar magnet, we should

(1) bring an iron nail towards it (2) suspend it freely with the help of a thread

(3) rub it with the silk cloth (4) rub it with the woolen cloth

5. A magnet remains unaffected in the presence of

(1) an iron ball (2) a cobalt bar (3) a nickel jar (4) a glass strip

6. To convert an iron bar into a magnet, we need

(1) to hammer the iron bar a large number of times

(2) red colour to denote north pole

(3) a magnet

(4) to heat it to high temperature

7. The attractive power of a magnet is most pronounced

(1) at north pole of the magnet (2) at south pole of the magnet

(3) at the poles of the magnet (4) at the center of the magnet

8. An example of a natural magnet is

(1) a wooden piece (2) a horseshoe magnet

(3) a bar magnet (4) a piece of lodestone

9. A magnet may lose its properties, if it is

(1) immersed in liquid(2) heated to a high temperature

(3) broken into two pieces (4) hanged freely

10. The magnetic property of a magnet is retained, if it is

(1) hammered (2) thrown from some height

(3) kept in the magnetic keepers (4) heated to high temperature​

Answer 1

Answer:

1- iron nail.

2- directive.

3- detcet the presence of magnet

4- suspended freely with the help of thread.

5- a glass strip.

6- to rub iron bar with magnet.

7- at the centre of the magnet.

8- lodestone

9- heated to a high temperature

10- if it is kept in the magnetic keepers.

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