Which one among the following is not an item which contains magnetic material in it?
CD
ATM card
Electric iron
Cassette
Electric iron works on the principle of heating effect of current. It does not contain magnetic material in it.
Which of the following is not a magnetic material?(a) gold(b) nickel(c) iron(d) cobalt
Which of the following statement is/are true
(i) As long as a metal has some iron in it, you can magnetize it using a magnet
(ii) A magnet is an oxide of iron, hence materials which have iron or is an oxide of iron can be made into a temporary magnet.