Class 10 Social Science Notes — Chapter 9: Minerals and Energy Resources
Types of minerals, distribution, energy sources — conventional and non-conventional.
Detailed NCERT notes
- Mineral = natural substance with a definite chemical composition; usually mined for use in industry.
- Classification: metallic (ferrous — iron, manganese, chromite; non-ferrous — copper, bauxite, lead, zinc), non-metallic (mica, limestone, gypsum), energy minerals (coal, petroleum, uranium).
- Iron ore: mostly hematite and magnetite; belts in Odisha-Jharkhand, Durg-Bastar-Chandrapur (Chhattisgarh-Maharashtra), Bellary-Chitradurga (Karnataka), Maharashtra-Goa.
- Manganese: Odisha (largest), Karnataka, MP, Maharashtra; used in steelmaking.
- Copper: Balaghat (MP), Khetri (Rajasthan), Singhbhum (Jharkhand); malleable, ductile, used in wiring.
- Bauxite (ore of aluminium): Amarkantak plateau, Bilaspur–Katni, Odisha; used in aluminium production.
- Mica: Jharkhand, Andhra Pradesh, Rajasthan; excellent insulator, used in electrical/electronic industry.
- Limestone: essential for cement, iron and steel; MP, Rajasthan, Andhra Pradesh, Gujarat.
- Conservation of minerals: reduce waste, recycle scrap, use substitutes, improve mining technology.
- Energy resources:
- Conventional (non-renewable): coal (Jharkhand's Jharia oldest and largest; Raniganj in WB; Damodar Valley), petroleum (Digboi — oldest field in Assam; Mumbai High; Bombay Basin; Krishna–Godavari basin), natural gas (KG basin, Rajasthan, Tripura), nuclear (uranium at Jaduguda, Kalpakkam and Tarapur reactors), hydel power (major dams).
- Non-conventional (renewable): solar (Gujarat & Rajasthan largest potential), wind (Muppandal in Tamil Nadu is Asia's largest wind farm), tidal (Gulf of Kachchh, Sundarbans), geothermal (Manikaran in HP, Puga in Ladakh), biogas (biomass in villages).
- Petroleum is fossil fuel formed from marine organisms; extracted through wells (onshore and offshore).
- Sustainable mining needs environmental clearance, rehabilitation of mine workers, and reforestation of mined land.
Formulas & key results
Mind map
- Metallic (ferrous/non-ferrous), non-metallic, energy minerals
- Distribution across belts and states
- Conventional vs non-conventional energy
- Conservation and sustainability
Tricks & shortcuts
- Digboi = oldest oil in India (Assam).
- Jaduguda = uranium; Manikaran = geothermal.
- Muppandal (TN) = largest wind farm.
Common mistakes to avoid
- Calling nuclear 'non-conventional'.
- Confusing metallic vs non-metallic minerals.
Competency-based questions & answers
- Q. Why must India shift to renewable energy?A. Growing energy demand, import dependence on oil and gas, price shocks, and climate commitments make solar/wind/biomass strategically and environmentally essential.
- Q. How is mica an important mineral for the electronics industry?A. It is an excellent electrical insulator, resistant to heat, and can be split into thin flexible sheets — ideal for capacitors and insulation in electrical devices.