Question

Which of the following is not an ore of aluminium?

• A. Bauxite
• B. Cryolite
• C. Kernite
• D. Corundum

Answer 1

Answer: (C)

Kernite

Answer 2

: Kernite is an ore of boron, $Na_{2}B_{4}O_{7}4H_{2}O$

Bauxite - $Al_{2}O_{3}.2H_{2}O$

Cryolite - $Na_{3}AlF_{6}$

Corundum- $Al_{2}O_{3}$ (anhydrous)