Major Minerals — Set 4

Correct Answer: B. Manganese

• **Manganese** = the mineral used in manufacturing dry cell batteries and as a hardening agent in steel and other alloys. • **10 kg per tonne of steel** — approximately 10 kg of manganese is required to manufacture one tonne of steel, making it essential for the metallurgy industry. • 💡 Wrong-option analysis: Bauxite: used to produce aluminum, not steel or batteries; Iron Ore: used to make steel, but manganese is specifically the alloying agent for hardness; Copper: used in electrical wiring and plumbing, not in dry cell batteries.

Correct Answer: D. Godavari

• **Godavari** = the river valley where Singareni collieries in Telangana are located, a major coal source for South India. • **South India's coal** — Singareni Collieries Company Limited (SCCL) supplies coal to thermal power plants across South India; these deposits are Gondwana coal. • 💡 Wrong-option analysis: Son: river in Madhya Pradesh and Bihar, no major Singareni collieries; Mahanadi: river in Chhattisgarh and Odisha, Talcher coalfield is there, not Singareni; Damodar: river in Jharkhand/West Bengal where Jharia and Raniganj are located, not Singareni.

Correct Answer: B. Andhra Pradesh

• **Andhra Pradesh** = the leading producer of mica in India, with major mines in the Nellore district. • **India's mica export legacy** — India was once the world's largest exporter of sheet mica; Andhra Pradesh's Nellore district is the premier mica-producing region. • 💡 Wrong-option analysis: Rajasthan: has some mica production in Bhilwara district but not the leader; Jharkhand: has the Koderma mica belt (mica capital) but Andhra Pradesh leads in total production; Bihar: was once important but most of its mica-rich areas are now in Jharkhand.

Correct Answer: C. Lignite

• **Lignite** = known as 'Brown Coal' due to its color, a low-grade coal with high moisture content and lower heating value. • **Tamil Nadu and Rajasthan** — India's main lignite deposits are in Neyveli (Tamil Nadu) and Barmer (Rajasthan), used primarily for thermal power generation. • 💡 Wrong-option analysis: Anthracite: highest grade coal, black not brown, found in J&K; Peat: even lower grade than lignite, partially carbonized organic matter; Bituminous: medium grade, black colored, most widely used coal in India.

Correct Answer: D. Mica

• **Mica** = the mineral for which Hazaribagh plateau in Jharkhand is a major production center, especially the muscovite variety. • **Muscovite mica** — the white/colorless variety of mica mined in Hazaribagh and Koderma, used in electronics, cosmetics, and electrical components. • 💡 Wrong-option analysis: Copper: Jharkhand has Singhbhum copper deposits but Hazaribagh is specifically known for mica; Manganese: manganese is from Odisha and Maharashtra, not Hazaribagh; Gold: gold is from Karnataka (Hutti, Kolar), not Hazaribagh.

Correct Answer: C. Ilmenite

• **Ilmenite** = an important titanium-bearing mineral found in the heavy beach sands of Tamil Nadu and Kerala coast. • **Aerospace and medical use** — titanium derived from ilmenite is used in aerospace (aircraft frames) and medical implants due to its strength and biocompatibility. • 💡 Wrong-option analysis: Bauxite: aluminum ore found in Odisha's Eastern Ghats, not beach sands; Limestone: sedimentary rock found in hilly areas, not beach sands; Hematite: iron ore from Odisha and Chhattisgarh, not beach mineral.

Correct Answer: C. Gujarat

• **Gujarat** = the leading producer of salt in India, accounting for over 70% of total national salt production. • **70%+ of national production** — Gujarat's long coastline and dry climate provide ideal conditions for solar evaporation salt production from seawater. • 💡 Wrong-option analysis: Tamil Nadu: produces salt but far less than Gujarat; Maharashtra: has some salt production along its coast; Rajasthan: has inland salt from Sambhar Lake but coastal production is far less than Gujarat.

Correct Answer: C. Karnataka

• **Karnataka** = the state where the Kolar Gold Fields (KGF) are located, once one of the world's deepest mines. • **World's deepest mines** — KGF's mines reached depths of over 3,000 meters, among the deepest in the world before large-scale operations ceased. • 💡 Wrong-option analysis: Tamil Nadu: does not have Kolar Gold Fields; Kerala: no significant gold mining; Andhra Pradesh: Ramagiri gold deposits exist but KGF is specifically in Karnataka.

Correct Answer: D. Rajasthan

• **Rajasthan** = the primary producer of lead in India, where lead is found as galena mineral in association with zinc. • **Battery and ammunition** — lead is the key material in lead-acid batteries (used in vehicles) and ammunition; Rajasthan's Rampura-Agucha is the world's second-largest zinc-lead mine. • 💡 Wrong-option analysis: Gujarat: not a major lead producer; Madhya Pradesh: has copper and coal but not the leading lead producer; Jharkhand: has iron ore and coal but not the leading lead-producing state.

Correct Answer: D. Chhattisgarh

• **Chhattisgarh** = the state where Korba coalfield is located, a major coal-producing district supplying power plants and aluminum smelters. • **Aluminum smelting** — Korba in Chhattisgarh hosts both major coal mines and the BALCO aluminum smelter due to proximity of coal and bauxite resources. • 💡 Wrong-option analysis: Jharkhand: has Jharia and Bokaro coalfields, not Korba; West Bengal: has Raniganj coalfield, not Korba; Odisha: has Talcher coalfield, not Korba.