Question

At room temperature, which of these are oxide minerals? Select all that apply.

Answer 1

C. and d. are oxyminerals.

Answer 2

Answer:  C.$Al_{2}O_{3}$ and D.$Fe_{3}O_{4}$

Explanation: Oxide minerals are the minerals in which the oxide anion is bonded to the central metal atom. These are useful for industrial purposes.

Out of the given options, only two of them can be categorized as the oxide minerals.  

H2O and CO2 will not be considered as oxide minerals.