Which of the following is a non‑metallic mineral used primarily in construction?
Answer
Limestone
The correct answer is Limestone — Select the option that matches the definition of a non‑metallic construction mineral.
Step-by-step solution
- Identify that non‑metallic minerals are those that are not used for metal extraction and are often employed in building materials.
- Examine each option: Bauxite (aluminium ore), Iron ore (metallic), Copper (metallic), Limestone (calcium carbonate used in cement and construction).
- Select the option that matches the definition of a non‑metallic construction mineral.
Common mistake: Choosing bauxite because it is a mineral, forgetting that it is primarily an aluminium ore, not a construction material.
Concept tested: Classification of non‑metallic minerals
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