Question

Which among the following statements is correct?

(a) NaCl is a paramagnetic substance

(b) Paramagnetic substances behave like an insulator

(c) Cobalt is an Antiferromagnetic substance

(d) On heating, ferrimagnetic substanceslose ferrimagnetism

I had been asked this question in an interview for internship.

The doubt is from Solid State Magnetic Properties in section Solid State of Chemistry – Class 12

Answer 1

Correct option is (d) On heating, ferrimagnetic substanceslose ferrimagnetism

For explanation I would say: On heating, ferrimagnetic substances become paramagnetic and hence, lose their ferromagnetism. NaCl is diamagnetic in nature. Cobalt is a ferromagnetic substance.