Question

The ore of aluminum is

• A. Haematite
• B. Magnetite
• C. Bauxite
• D. Siderite

Answer 1

The correct option is C

Bauxite

The explanation for the correct option

(C) Bauxite

• Bauxite$\left({\mathrm{Al}}_2{\mathrm{O}}_3.{\mathrm{xH}}_2\mathrm{O}\right)$ is the principal ore of aluminium.
• It usually contains ${\mathrm{SiO}}_2$ , titanium oxide, and iron oxides as impurities.

The explanation for incorrect option

• Hametitite$\left({\mathrm{Fe}}_2{\mathrm{O}}_3\right)$, magnetite$\left({\mathrm{Fe}}_3{\mathrm{O}}_4\right)$, and siderite$\left({\mathrm{FeCO}}_3\right)$ are the ore used for the extraction of iron.
• The ore of aluminium is bauxite. Hence, options (A), (B), and (D) are incorrect.

Hence, option (C) is correct. The ore of aluminium is bauxite.