UPSC CSE Prelims
Mineral Resources Previous Year Questions (PYQs)

Detailed Explanation:

Correct Answer: ✅ Option 3 (All the three)

All three pairs are correctly matched. These countries are globally known for their abundant reserves and production of strategically important minerals that are essential for modern industries, renewable energy technologies, and manufacturing.

✅ Pair I is Correct: Botswana is one of the world's leading diamond-producing countries, and diamonds are the backbone of its economy.

✅ Pair II is Correct: Chile possesses vast lithium reserves, especially in the Atacama Desert, making it a major global lithium supplier.

✅ Pair III is Correct: Indonesia is the world's largest producer of nickel, a critical mineral for batteries and stainless steel production.

Short Notes: Critical Minerals of the World

• Diamonds are important for both jewelry and industrial applications.

• Botswana is among the world's top diamond exporters.

• Lithium is a key component in electric vehicle (EV) batteries.

• Chile, Australia, and Argentina form the famous "Lithium Triangle" region (Chile and Argentina directly; Bolivia is also a major reserve holder).

• Nickel is essential for battery manufacturing and stainless steel production.

• Indonesia holds some of the world's largest nickel reserves.

• Demand for lithium and nickel is increasing due to the global transition to clean energy.

Detailed Explanation:

Answer: Option 4 — Titanium

Ilmenite (FeTiO₃) and Rutile (TiO₂) are titanium-bearing minerals abundantly found in coastal beach sand deposits of India. These minerals are rich sources of titanium and are processed to extract titanium dioxide, which is further refined to produce metallic titanium used in aerospace, medical, and industrial applications.

📝 Short Notes: Beach Sand Minerals of India

• Heavy Minerals: Beach sands in India contain seven major heavy minerals—ilmenite, leucoxene, rutile, zircon, sillimanite, garnet, and monazite.
• Titanium Minerals: Ilmenite (FeTiO₃) and Rutile (TiO₂) are the primary sources of titanium; leucoxene is an altered form of ilmenite with higher TiO₂ content.
• Major Coastal Deposits: Found along the coasts of Kerala, Tamil Nadu, Odisha, and Andhra Pradesh, particularly in areas like Chavara, Manavalakurichi, and Chatrapur.
• Uses of Titanium: Known for high strength-to-weight ratio and corrosion resistance; used in aerospace components, medical implants, pigments (TiO₂), and defense applications.
• Other Economic Minerals: Zircon (zirconium source), Monazite (thorium and rare earths), Garnet (abrasives), and Sillimanite (refractories).
• Extraction Method: Beach sand mining involves dredging, followed by gravity and magnetic separation to concentrate heavy minerals.

Detailed Explanation:

Answer: Option 3 — The Democratic Republic of the Congo

The Democratic Republic of Congo (DRC) is the world's leading cobalt producer, accounting for approximately 70% of global production and holding half of the world's known cobalt reserves. Cobalt is a critical mineral essential for manufacturing rechargeable batteries used in electric vehicles and energy storage systems, making the DRC's dominance in this sector strategically significant for the global transition to clean energy.

📝 Short Notes: Global Cobalt Production and Strategic Importance

• Primary Use: Cobalt is crucial for lithium-ion batteries in electric vehicles, smartphones, laptops, and energy storage systems, as well as in superalloys, catalysts, magnets, and pigments.
• Top Producers: Democratic Republic of Congo (70%), Indonesia, Russia, Australia, and Madagascar constitute the top five cobalt-producing countries globally.
• DRC Dominance: The DRC holds approximately 50% of the world's known cobalt reserves and accounts for three-fourths of global production, making it a critical player in the clean energy transition.
• Strategic Mineral Status: Cobalt has been classified as a critical mineral by many governments, including India, due to its importance for future technologies and energy security.
• Indian Context: Small deposits of cobalt exist in Odisha and Jharkhand, though India remains heavily dependent on imports for its cobalt requirements.
• Geopolitical Concerns: The concentration of cobalt production in a single country raises concerns about supply chain vulnerabilities, ethical mining practices, and price volatility in the global market.