What do you call the process by which passing the metals through an electric current which create both poles oppositely charge

Which of the following object will attract to a magnet?

What do you call magnets that do not lose its magnetism?

What will happen if both South pole of magnets are put together?

Which of the following minerals does lodestone magnetize?

How many poles does a magnet have?

What is the reason behind the presence of magnetic fields in magnets?

Which among the following metals does not need to undergo polarization?

What do you call magnets which have strong magnetic field but lose its magnetism when no magnetic field is present?

What will happen if the North and South pole of magnets are put together?