A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filings Clinging to the

1

(a)

North pole is almost equal to the South pole

(b)

North pole is much less than the South pole

(c)

North pole is much less than the South pole

(d)

magnet will be same all along its length

Magnets have a shape of

1

(a)

cylindrical

(b)

horse-shoe

(c)

ball-ended magnet

(d)

All of these

A freely suspended magnet always points in the

1

(a)

upside down

(b)

East-West direction

(c)

North-South direction

(d)

Any direction by chance

 The South pole of earth's magnet is near the geographical ________________pole.

1

(a)

North

A shepherd named _______________ discovered the magnet.

1

(a)

Magnes

A magnet attracts the ______________materials.

1

(a)

magnetic

Strength of a magnet is weaker at the poles.

1

(a) True

(b) False

Heating cannot destroy the magnetic properties of a magnet.

1

(a) True

(b) False

Copper cannot be magnetised.

1

(a) False

(b) True

Do the opposite poles attract or repel each other?

1

(a)

The opposite poles attract each other.

What will happen if a magnet is brought near a compass?

1

(a)

If a magnet is brought near a compass, the south pole of compass is attracted towards north pole of magnet and north pole of compass is attracted towards south pole of magnet.

How is compass used to find directions?

1

(a)

The needle of the compass indicates North-South direction, when it comes to the rest. By knowing North-South directions, one can always find out East and West directions.

When South pole of a magnet comes in contact with South pole of other magnet, than what happens?

2

(a)

Mention a way to magnetise a magnetic material with a natural magnet.

2

(a)

Mention the name of magnet used in electrical bell

2

(a)

A tailor was stitching buttons on his shirt. The needle has slipped from his hand onto the floor. How can you help the tailor to find the needle?

2

(a)

A toy car has a bar magnet laid hidden inside its body along its length. Using another magnet, how will you find out which pole of the magnet is facing the front of the car?

3

(a)

Suggest an arrangement to store a U-shaped magnet. How is this different from storing a pair of bar magnets?

3

(a)

Kanchan is a class VI student. She has to show an activity in school exhibition. But, she has no idea. Her friend Suresh advised her to do an activity in which rope stands without any support with the help of magnet and ask her to take a small rope, a magnet, a cup and a stand.
(a) State the values that Suresh reflect here?
(b) Name some non-magnetic materials.

3

(a)

Explain how will you test that the 'tea dust' is not adulterated with iron powder.

3

(a)

State the ways through which a magnet can be demagnetised.

3

(a)

Describe the steps involved in the magnetising of an iron strip with the help of a magnet.

5

(a)

You are provided with two identical metal bars. Out of the two, one is a magnet. Suggest two ways to identify the magnet.

5

(a)

A bar magnet is cut into two pieces A and B from the middle as shown in figure.

Will the two pieces act as individual magnets? Mark the poles of these two pieces. Suggest an activity to verify your answer.

5

(a)