Indian economic geology: Among the locations listed, which site is well known for copper deposits and large-scale copper mining operations?

Introduction / Context:
India’s mineral resources are geographically distributed, and recognizing the correct mineral–location pairs is a frequent objective in competitive exams and general studies. Copper in particular has historically significant deposits and smelting operations in specific belts.

Given Data / Assumptions:

• Options list well-known mining locations across India.
• Question asks specifically for copper deposits/mining.
• Focus on conventional associations taught in geography and metallurgy curricula.

Concept / Approach:
The Khetri copper belt in Rajasthan is India’s classic copper-mining region with established underground and open-cast operations historically managed by Hindustan Copper Limited. The other locations are associated with different minerals: Kudremukh with iron ore, Kolar with gold (now mostly closed), and Ramagundam with coal and power generation.

Step-by-Step Solution:

Verification / Alternative check:
Government and industry sources list Khetri–Singhana belt as a principal copper resource region in India.

Why Other Options Are Wrong:

• Kudremukh: Magnetite/iron ore project.
• Kolar: Kolar Gold Fields (KGF).
• Ramagundam: Coal mines and thermal power station.

Common Pitfalls:
Confusing copper with lead–zinc deposits in other Rajasthan belts; Khetri is the canonical copper association.

Final Answer:
Khetri