Magnetic and Non Magnetic Materials

Q. Jeetu wants to make a magnet. Which of the following materials is not useful for the purpose?

1. Steel
2. Nickel
3. Cobalt
4. Silver

Q.

Which of the following metals are magnetic in nature?

1. Aluminium, copper

2. Cobalt, nickel, iron, steel

3. Copper, lead, brass, zinc

4. Iron, aluminium, zinc, lead

Q.

Which of the following is NOT a magnetic material?

1. Cobalt

2. Plastic

3. Nickel

4. Iron

Q. Which among the following materials gets attracted by a magnet?

1. Paper boat
2. Iron nail
3. Wooden bat
4. Plastic comb

Q. Steel pins sprinkled on a bar magnet concentrate at ________ of the magnet.

1. all locations
2. the two extremes
3. the middle
4. the right end

Q.

A magnet always attracts wood.

1. False
2. True

Q.

Which of the following is a magnetic substance?

1. Glass

2. Wood

3. Nickel

4. Chinaware

Q.

Which among the following material cannot be used to make a magnet?

1. Cobalt

2. Iron

3. Copper

4. Steel

Q.

Cow magnet is used to prevent hardware disease in cattle.

1. True

2. False

Q.

Which of the following statement is correct?

1. Rubber is a magnetic material.

2. Steel is not a magnetic material.

3. Bar magnets point towards North-South direction when suspended freely.

4. The strength of a magnet near the centre is maximum.