Question
Question: Which of the following minerals is not an ore of aluminum....
Which of the following minerals is not an ore of aluminum.
A
Bauxite
B
Gypsum
C
Cryolite
D
Corundum
Answer
Gypsum
Explanation
Solution
\text{Bauxite }(Al_{2}O_{3}) \\
\text{Cryolite }(Na_{3}AlF_{6}) \\
\text{Corundum }(Al_{2}O_{3})
\end{matrix} \right\}\text{ Minerals of }Al$$
$$\text{Gypsum }(CaSO_{4}.2H_{2}O)$$