Q1. Which of the following is an ore of mercury?
- (a) Bauxite
- (b) Magnetite
- (c) Cinnabar
- (d) Malachite
Answer & solution
Answer: (c) Cinnabar
Cinnabar (HgS - mercuric sulphide) is the primary ore of mercury. It is a bright red mineral and the most important source of mercury worldwide.
Option 1 (Bauxite) is incorrect - Bauxite is the primary ore of Aluminium.
Option 2 (Magnetite) is incorrect - Magnetite (Fe3O4) is an ore of Iron.
Option 4 (Malachite) is incorrect - Malachite is a copper carbonate mineral and is an ore of Copper.