Multiple choice

Substances showing permanent magnetism are known as

  1. paramagnetic materials

  2. ferrimagnetic substances

  3. ferromagnetic substances

  4. anti-ferromagnetic substances

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

These substances show permanent magnetism even when the magnetic field is removed. For example,  FeO and CrO2 Fe, Co, Ni show ferromagnetism even at room temperature.