Natural and Artificial Magnets

Q.

How do you get a magnet to stick to aluminum?

Q.

Lodestone is an example of:-

1. Artificial magnet

2. Natural magnet

3. Electromagnet

4. None of these

Q.

You are given an iron strip. How will you convert it into a temporary magnet?

1. By putting it into hot water.

2. By placing a magnet near it for few hours.

3. By rubbing it with a magnet for few minutes.

4. It can't be converted.

Q.

______________is the only natural magnet.

1. Magnetite

2. Cobalt

3. Nickel

4. Iron

Q. How can you convert an iron bar into a magnet?

1. By hammering it.
2. By rubbing a magnet on it for a few minutes.
3. By keeping it in a hot glass of water.
4. By freezing it.