Magnetic Materials Quiz

Which of the following materials are considered magnetic materials?

• Gold

• Copper

• Aluminium

• Iron

Answer explanation

Iron is considered a magnetic material due to its magnetic properties, unlike Gold, Copper, and Aluminium.

Which category do di magnetic materials belong to?

• Paramagnetic

• Ferromagnetic

• Di magnetic

• Non-magnetic

Answer explanation

Di magnetic materials belong to the category of Di magnetic materials.

What happens to paramagnetic materials when placed in a magnetic field?

• They become non-magnetic

• They remain unaffected

• They are attracted

• They are repelled

Answer explanation

Paramagnetic materials are attracted when placed in a magnetic field, making them move towards the source of the magnetic field.

In a non-uniform magnetic field, where do ferromagnetic materials move?

• From weaker to stronger field

• From stronger to weaker field

• They do not move

• They move randomly

Answer explanation

In a non-uniform magnetic field, ferromagnetic materials move from weaker to stronger field due to the magnetic force acting on them.

Which material loses its magnetism on removal of an external magnetic field?

• Ferromagnetic

• Paramagnetic

• Di magnetic

• All of the above

Answer explanation

The correct choice is 'Di magnetic' as this material loses its magnetism on removal of an external magnetic field.

What happens to a di magnetic rod when freely suspended in a uniform magnetic field?

• Aligns itself parallel to the field

• Moves randomly

• Remains stationary

• Aligns itself perpendicular to the field

Answer explanation

A di magnetic rod aligns itself perpendicular to the field when freely suspended in a uniform magnetic field.

Which of the following is an example of a paramagnetic material?

• Oxygen

• Iron

• Cobalt

• Steel

Answer explanation

Oxygen is an example of a paramagnetic material due to its unpaired electrons, unlike iron, cobalt, or steel.

What is the primary characteristic of ferromagnetic materials?

• Do not interact with a magnet

• Repelled by a magnet

• Strongly attracted by a magnet

• Weakly attracted by a magnet

Answer explanation

The primary characteristic of ferromagnetic materials is that they are strongly attracted by a magnet, unlike materials that are repelled or weakly attracted.

What is the behavior of paramagnetic materials in a non-uniform magnetic field?

• Remain stationary

• Move from stronger to weaker field

• Move randomly

• Move from weaker to stronger field

Answer explanation

Paramagnetic materials move from weaker to stronger magnetic fields due to the attraction towards the stronger field.

Which material is weakly repelled by a magnet?

• Copper

• Platinum

• Silver

• Gold

Answer explanation

Gold is weakly repelled by a magnet, making it the correct choice among the given materials.