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Artificial magnets: 2 Marks
Examples: 1 Mark
Magnets that are made from pieces of iron areknown as artificial magnets. Artificial magnetsare man-made magnets prepared by using elements like iron, cobalt, nickel or their mixture with other elements. Artificial magnets come in different shapes, for example, bar magnet, horseshoe magnet, cylindrical or ball-ended magnet.

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Repulsion is a sure test for magnetism because to identify whether the rod or material is an iron rod, a magnet repulsion is the only way. This is because a magnet attracts an iron object and unlike poles repel each other.

Answer: Option C. -> Copper
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C
Magnetic materials are those materials which are attracted toa magnet. Magnetic materials areused to makepermanent magnets. Copper is not a magnetic material. When placed near a magnet, copperis not attracted tothe magnet. Hence, copper cannot be used to make a magnet.

Answer: Option C. -> electromagnet
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C
An electromagnet is a type of magnet in which the magnetic field is generated with the help of an electric current. Magnetic materials can behave like electromagnets if a current is passed through a coil around them. It is a temporary magnet, i.e. it loses its magnetic properties as soon as the current flow is stopped. Electric bell has an electromagnet in it which attracts the striker.

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Each use: 1 Mark
1) A magnetic compass can be used to find directions.
2) A magnet can be used to separate magnetic material from a non-magnetic material.

Answer: Option D. -> A magnet points in East-West direction when suspended freely.
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D
A magnet has two poles: A North pole and a South pole. Like poles of magnets repel each other and unlike poles attract each other.A freely suspended magnet always points in the Earth's North-South direction.

Answer: Option A. -> natural magnet
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A
Magnetite is a naturally occurring iron oxide mineral.It is the strongest magnetic substance among all the naturally occurring minerals. Hence, magnetite is a natural magnet.

Answer: Option A. -> magnetic materials
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A
The materials which are attracted towards a magnet are called magnetic materials. These materials can easily be magnetized to create permanent magnets. Iron, Nickel and Cobalt are some examples of magnetic materials.

Answer: Option A. -> Magnetite
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A
Magnetite, a naturally occurring mineral. It is an ore of iron, which has magnetic properties. Hence, it is the only natural magnet. The rest of them are magnetic materials but notmagnets.

Answer: Option C. -> Bar magnets point towards North-South direction when suspended freely.
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C
Bar magnets point in the North-South direction when suspended freely. This is because the Earth itself behaves as a magnet which causes a freely suspended magnet (or magnetic needle) to point always in a particular direction: North and South.
Materials which are attracted by a magnet are called magnetic materials. Hence,rubber isnot a magnetic materialand steel is a magnetic material. The strength of a magnet is maximum at the ends.