Question

Which one of the following is an example of non-metallic mineral based industry?

• A. Aluminium industry
• B. Iron and Steel industry
• C. Copper industry
• D. Cement industry

Hint:

{Shortcut:}
Metal ore → Metallic industry
Limestone / clay → Non-metallic → Cement

Answer 1

The Correct Option is D

Concept: Industries are often classified based on the type of raw material they use. Metallic mineral-based industries use metal ores, while non-metallic mineral-based industries use minerals that do not contain metals.
Step 1:Understanding non-metallic mineral industries.
Non-metallic minerals include limestone, gypsum, mica, and clay. Industries using these minerals fall under non-metallic mineral-based industries.
Step 2:Evaluating the options.

• Aluminium industry:
  Uses bauxite (a metallic ore) → Metallic industry.
• Iron and Steel industry:
  Uses iron ore → Metallic industry.
• Copper industry:
  Uses copper ore → Metallic industry.
• Cement industry:
  Uses limestone, gypsum, and clay → Non-metallic minerals.

Step 3:Conclusion.
Since cement is produced from non-metallic minerals, it is a non-metallic mineral-based industry. \[ \boxed{(D)\ \text{Cement industry}} \]