Question

5. Fe, Co, Ni and Fe3O4 are example of
(a) ferromagnetic
(b) paramagnetic
(c) diamagnetic
(d) None of the above​

Answer 1

Answer:

Fe, Co, Ni and Fe3O4 are example of  :-

=>(a) ferromagnetic.

Answer 2

Answer:

1. ferromagnetic are the example