Match Column-I with Column-II and choose the correct option.
Column-I (Minerals) | Column-II (Examples)
I. Ferrous | a. Coal
II. Non-Ferrous | b. Granite
III. Non-Metallic | c. Bauxite
IV. Energy | d. Cobalt
Generated by claude-sonnet-4-6 · 2026-06-15 07:02 · grounding rag
Model Answer
The correct answer is (B) I-d, II-c, III-b, IV-a
Cobalt is ferrous; Bauxite is non-ferrous; Granite is non-metallic; Coal is an energy mineral.
Explanation
- Ferrous minerals contain iron (e.g., iron ore, cobalt, nickel, manganese). Cobalt is ferrous.
- Non-ferrous minerals do not contain iron but contain other metals — Bauxite (aluminium ore) is a classic example.
- Non-metallic minerals include Granite, limestone, mica etc.
- Energy minerals include Coal, petroleum, natural gas. Coal is explicitly mentioned in the chapter as an energy mineral.
Eliminate wrong options by checking even one correct pair — Coal = Energy (IV-a) is confirmed in the passage.