Which one of the following is a non-metallic mineral?
Correct answer: C. Gypsum
- A. Manganese
- B. Magnesium
- C. Gypsum
- D. Bauxite
- E. None of these
Explanation
Gypsum is hydrated calcium sulfate, a non-metallic mineral used in plaster and cement. Manganese, magnesium and aluminium-bearing bauxite are classified as metallic mineral resources.
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