Ferrous minerals contain iron as a major constituent, e.g., iron ore, manganese, nickel, cobalt. They provide a strong base for metallurgical industries.
Non-ferrous minerals do not contain iron but include other valuable metals such as copper, bauxite, gold, and silver. Rajasthan has significant reserves of non-ferrous minerals.
The question asks for a distinction, so write one point about each type. Examiners expect: definition/key property + example for each. The passage directly defines ferrous minerals and mentions non-ferrous minerals in the context of Rajasthan's reserves. Stick to this; avoid over-elaborating. Two clear contrasting sentences with examples earn full marks.