NCERT
Every NCERT book that matters for UPSC — open a book, then a chapter. Learn each chapter's concepts, then how UPSC tests them — with diagrams, flowcharts and the past questions to attempt.
0% read
← India: People and Economy — all chaptersMineral and Energy Resources
Start here: why this chapter matters
In simple wordsA mineral deposit is like a pantry stocked once, millions of years ago, with no refills. India's pantry is rich but its shelves are unevenly stocked — the Peninsula holds most of it, the northern plains almost nothing — and once a shelf is emptied, it stays empty. This chapter maps the pantry and asks how to make it last.
Minerals and energy are the base of industry, transport and farming. The bulk of India's valuable minerals are pre-Palaeozoic and lie in the metamorphic and igneous rocks of the Peninsula; the alluvial plains of the north are almost devoid of economic minerals. NCERT defines a mineral as a natural substance of organic or inorganic origin with definite chemical and physical properties.
- Builds on Fundamentals of Physical Geography Chapters 2–3 and 5 (geological time, rocks) and India: Physical Environment Chapter 2 (Structure and Physiography) — the Peninsular block, Dharwar and Gondwana rocks.
- Builds on Chapter 4 (Water Resources): hydel and multipurpose projects.
- Links to Fundamentals of Human Geography Chapters 4–5 (primary and secondary activities — mining, iron and steel).
- Leads into Chapter 6 (Planning and Sustainable Development) and Chapter 9 (problems such as pollution).
- UPSC: GS1 (distribution of key natural resources, factors for industry location), GS3 (energy, infrastructure, environment, mining). Prelims has asked mineral locations nearly every year from 1980 to 2010, and energy questions since.
| Word | What it means here |
|---|---|
| Ore | Rock containing a mineral in enough concentration to be mined profitably |
| Ferrous / non-ferrous | Minerals containing iron / minerals without iron |
| Haematite / magnetite | India's two main iron ores |
| Gondwana / tertiary coal | Old coal of the Peninsula's rift valleys / younger coal of the north-east |
| Lignite | Brown coal — low grade, high moisture |
| Field-based / market-based refinery | Refinery beside an oilfield / near consumers or ports |
| Monazite | Beach-sand mineral that yields thorium (and rare earths) |
| Conventional / non-conventional energy | Exhaustible fuels / renewable sources |
| Photovoltaics / solar thermal | Sunlight turned directly into electricity / sunlight used as heat |
| Bio-energy | Energy from farm residues, municipal and industrial wastes |
Reading the chapter-opening photograph (page 53)An open-cast mine: a giant electric shovel loading broken rock into a heavy dump truck on a terraced pit face. It shows how most Indian iron ore and coal is mined — by stripping the surface — and why mining scars land (Mains 2017, 2025).
At a glance — the six ideas to carry away
- Minerals: metallic (ferrous — iron, manganese; non-ferrous — copper, bauxite) and non-metallic (fuels; mica, limestone).
- Three traits: uneven distribution, quality inversely related to quantity, exhaustible — ‘no second crop’.
- Belts: NE plateau (most diversified), SW plateau, NW (Aravalli), Himalaya; most east of the Mangaluru–Kanpur line.
- Iron ore: ~95% of reserves in Odisha, Jharkhand, Chhattisgarh, Karnataka, Goa, Telangana, AP, TN; bauxite: Odisha first; mica: Jharkhand (Hazaribagh), Nellore.
- Coal: >97% in Damodar, Sone, Mahanadi, Godavari valleys; Jharia largest; ~80% bituminous non-coking. Oil: Digboi, Ankaleshwar, Mumbai High (production 1976).
- Nuclear: uranium (Dharwar rocks), thorium (monazite — Kerala); Tarapur, Rawatbhata, Kalpakkam, Narora, Kaiga, Kakrapar. Renewables: solar, wind, tidal, geothermal (Manikaran), bio-energy (Okhla).
1. Types and characteristics of minerals
In simple wordsSort a box of stones by one question: will it give a metal when heated? Yes → metallic; no → non-metallic. Then ask of the metals: does it contain iron? And of the rest: did it come from living things (coal, oil) or not (mica, limestone)?
Reading NCERT Figure 5.1 — Classification of Minerals (page 53)
- Minerals → metallic and non-metallic.
- Metallic → ferrous (e.g. iron, manganese) and non-ferrous (e.g. copper, bauxite).
- Non-metallic → fuel minerals (coal, petroleum, natural gas) and other non-metallics (mica, limestone, graphite).
- What the figure makes clear: fuels are non-metallic minerals of organic origin — ‘mineral fuels’.
⤵ Three characteristics of minerals and what follows from them (NCERT)
Unevenly distributedPeninsula rich, northern plains bare
Quality ∝ 1 / quantityhigh-grade ores are scarce, low-grade plentiful
Exhaustibletake ages to form; ‘no second crop’
Thereforeconserve, recycle, substitute, and do not waste or over-export
Exam traps
- Gypsum is non-metallic; manganese, magnesium and bauxite are metallic (UPSC 1988).
- Bauxite yields aluminium (UPSC 1980), not copper.
- Metals such as gold and copper are found mostly in old igneous rocks (UPSC 1992 key).
2. Distribution: the mineral belts
In simple wordsDraw an imaginary line from Mangaluru on the west coast to Kanpur on the Ganga. Almost everything worth mining — iron, coal, manganese, bauxite, mica — lies to the east and south of it, on the old rocks of the plateau.
Most metallic minerals lie in the old crystalline rocks of the Peninsular plateau. Over 97 per cent of coal reserves are in the valleys of the Damodar, Sone, Mahanadi and Godavari. Petroleum is in the sedimentary basins of Assam, Gujarat and Mumbai High (offshore in the Arabian Sea), with new finds in the Krishna–Godavari and Kaveri basins. Most major minerals occur east of a Mangaluru–Kanpur line.
Beyond NCERT — the Dandi questionNCERT asks why and where Gandhi held the Dandi March: from Sabarmati Ashram to Dandi on the Gujarat coast (12 March–6 April 1930), to break the British salt law by making salt from sea water — linked here because Gujarat and Rajasthan are India's main salt sources.
Exam traps
- The north-eastern plateau belt is the most diversified; the south-western belt lacks coal except Neyveli lignite.
- Copper and zinc of the north-west are associated with Dharwar rocks; Gondwana rocks hold over 90% of coal (UPSC 2010).
- Natural gas is not in Gondwana beds and the Dharwars are not famous for petroleum; mica is abundant in Kodarma (UPSC 2013).
3. Ferrous and non-ferrous minerals
In simple wordsIron is the skeleton of industry, manganese the vitamin that makes steel strong, bauxite the light metal of aircraft and cans, copper the nervous system of every electric wire. India has plenty of the first two and of bauxite, but little copper.
| Mineral | Key facts (NCERT) | Where (NCERT) |
|---|---|---|
| Iron ore (haematite, magnetite) | Largest reserves in Asia (NCERT); high quality in demand abroad; mines close to coal fields in the NE plateau; ~95% of reserves in eight States | Odisha: Gurumahisani, Sulaipet, Badampahar (Mayurbhanj), Kiriburu (Kendujhar), Bonai (Sundergarh) · Jharkhand: Noamundi, Gua (Singhbhum) · Chhattisgarh: Dalli, Rajhara (Durg), Bailadila (Dantewada) · Karnataka: Sandur–Hospet (Ballari), Baba Budan hills, Kudremukh · Maharashtra, Telangana, AP, TN · Goa |
| Manganese | For smelting iron and making ferro-alloys; mainly in the Dharwar system | MP (Balaghat–Chhindwara–Nimar–Mandla–Jhabua) and Odisha (Bonai, Kendujhar, Sundergarh, Gangpur, Koraput, Kalahandi, Bolangir) lead; Karnataka, Maharashtra (far from steel plants); minor: Telangana, Goa, Jharkhand |
| Bauxite | Ore of aluminium; in tertiary deposits with laterite on plateaus, hills and coasts | Odisha first (Kalahandi, Sambalpur, Bolangir, Koraput) · patlands of Lohardaga (Jharkhand) · Gujarat (Bhavnagar, Jamnagar) · Chhattisgarh (Amarkantak) · MP (Katni–Jabalpur, Balaghat) · Maharashtra (Kolaba, Thane, Ratnagiri, Satara, Pune, Kolhapur) |
| Copper | For wires, motors, transformers, generators; alloyable, malleable, ductile; strengthens gold jewellery | Singhbhum (Jharkhand), Balaghat (MP), Jhunjhunu, Alwar (Rajasthan); minor: Agnigundala (AP), Chitradurga, Hassan (Karnataka), South Arcot (TN) |
| Mica | Electrical and electronic uses; splits into thin, tough, flexible sheets | Jharkhand: 150 km × 22 km belt in lower Hazaribagh plateau · AP: Nellore (best quality) · Rajasthan: 320 km belt Jaipur–Bhilwara, around Udaipur · also Karnataka, TN, Kerala, Maharashtra, West Bengal |
Reading NCERT Figure 5.2 — India: Metallic Minerals (Ferrous) (page 56)
- Symbols for iron ore fields (shaded), iron ore mines, manganese and iron-ore exporting ports.
- Eastern cluster: mines at Gua, Kendujhar, Mayurbhanj and manganese at Sundergarh on the Jharkhand–Odisha border; exported through Paradip.
- Central cluster: a large iron field from Durg south to Bailadila, with Chandrapur; manganese at Balaghat, Nagpur, Bhandara; exported through Visakhapatnam.
- Western–southern cluster: Ratnagiri and Goa (exported via Marmagao), Karnataka's Ballari, Chitradurga, Tumakuru, Chikkamagaluru and Kudremukh (exported via Mangaluru); manganese at Shivamogga and Goa.
- What the map adds: the four export ports — iron ore leaves India from both coasts (UPSC 1979 linked Marmagao's growth to iron-ore exports).
Reading NCERT Figure 5.3 — India: Minerals (Non-Ferrous) (page 58)
- Copper (stars): Khetri, Alwar, Bhilwara, Udaipur in Rajasthan; Singhbhum and Hazaribagh in Jharkhand; Balaghat in MP.
- Bauxite (symbols): Katni, Amarkantak, Maikala hills, Bilaspur in central India and Koraput in Odisha.
- What the map adds: Khetri (UPSC 1982) is the main Rajasthan copper site — named on the map, not in the text. The text mentions Hazaribagh for mica, while the map marks a copper star there.
Beyond NCERT
- Kudremukh mining stopped in 2005 after a Supreme Court order to protect the Western Ghats forests.
- Malanjkhand (Balaghat, MP) is India's largest open-cast copper mine; Sukinda (Odisha) is the chromite valley; Jaduguda (Jharkhand) the first uranium mine (UPSC 1991 matched these).
- Manganese mines in Odisha lie inside the iron-ore belt because steel plants need both — NCERT's ‘Can you find out its reason?’
Exam traps
- Iron ore: Bailadila (Chhattisgarh), Kudremukh (Karnataka); coal: Jharia; copper: Khetri, Singhbhum (UPSC 1982, 1984, 1989).
- India is poor in non-ferrous metals except bauxite.
- Hazaribagh = mica; Kolar = gold; Sindri = fertilisers (UPSC 1982, 1984).
4. Coal, petroleum and natural gas
In simple wordsCoal is ancient forest pressed into rock; oil and gas are ancient sea life cooked under sediment. India has a lot of the first and too little of the second — which is why it burns its own coal for electricity and imports most of its oil.
Coal is used mainly for thermal power and smelting iron ore. It occurs in rocks of two ages, Gondwana and tertiary. About 80 per cent is bituminous and non-coking. The most important Gondwana fields are in the Damodar valley (Jharkhand–Bengal belt): Raniganj, Jharia, Bokaro, Giridih, Karanpura — Jharia is the largest, followed by Raniganj. Other centres: Singrauli (MP–UP), Korba (Chhattisgarh), Talcher, Rampur (Odisha), Chanda–Wardha, Kamptee, Bander (Maharashtra), Singareni (Telangana), Pandur (AP).
⤵ Where India's coal goes (NCERT's two uses)
Minedmostly open-cast, in the Damodar, Sone, Mahanadi and Godavari valleys
Non-coking coal (≈ 80%)pit-head and coastal thermal power stations — India's largest power source
Coking coal (scarce)converted to coke for smelting iron ore in steel plants; shortfall imported
Side-effectsash, air pollution, land degradation — hence the push to renewables
Petroleum — hydrocarbons of liquid and gaseous states — fuels internal-combustion engines and yields petrochemicals (fertiliser, synthetic rubber and fibre, medicines, vaseline, lubricants, wax, soap, cosmetics). It is called liquid gold for its scarcity and many uses, and occurs in tertiary sedimentary rocks. Systematic exploration began after the Oil and Natural Gas Commission was set up in 1956; until then Digboi was the only producer. Fields: Assam — Digboi, Naharkatiya, Moran; Gujarat — Ankaleshwar, Kalol, Mehsana, Nawagam, Kosamba, Lunej; Mumbai High, 160 km offshore (production from 1976); and the Krishna–Godavari and Kaveri basins.
Natural gas occurs with petroleum and is released when crude is brought up. It fuels power plants, industrial heating and fertiliser, chemical and petrochemical plants, and — with city gas networks — vehicles (CNG) and kitchens (PNG). Major reserves: Mumbai High and allied west-coast fields, the Cambay basin, and the Krishna–Godavari basin on the east coast.
Reading NCERT Figure 5.4 — India: Conventional Energy Resources (page 60)
- Coal fields and mines: a belt through the Damodar valley (Jharia, Bokaro, Raniganj), Singrauli, Korba, Talcher, Singareni in the Godavari valley, and Neyveli lignite in Tamil Nadu; tertiary coal at Makum in upper Assam.
- Oil fields: Digboi, Naharkatia, Moran, Sibsagar in Assam; Kalol, Ankaleshwar in Gujarat; Bassein and Mumbai High offshore.
- Natural gas reserves: western Rajasthan, the Gujarat–Cambay coast, offshore Mumbai, the east-coast basins, Tripura and Assam.
- The HVJ gas pipeline from Hazira through Vijaipur to Jagdishpur, with branches serving Anta, Auraiya, Babrala, Aonla, Shahjahanpur, Jhabua, Vadodara, and the Delhi–Gurgaon–Sonipat area — mostly gas-based fertiliser and power plants.
- The activity asks about GAIL pipelines under ‘One Nation One Grid’ — the initiative is One Nation One Gas Grid (Beyond NCERT).
Reading NCERT Figure 5.5 — India: Oil Refineries (page 62)
- About two dozen refineries: in the north-east Digboi, Numaligarh, Guwahati, Bongaigaon; inland Barauni, Mathura, Panipat, Bathinda, Bina; on the west coast Jamnagar, Vadinar, Koyali, Mumbai (two), Mangaluru, Kochi; on the east coast Haldia, Paradip, Visakhapatnam, Tatipaka, Chennai, Nagapattinam.
- What the map adds: refineries cluster on the coasts (imported crude) and along pipelines inland (market-based); only the Assam ones and Koyali–Ankaleshwar sit near oilfields.
NCERT details to watch
- NCERT says Mumbai High was discovered in 1973; most sources give 1974 (production began in 1976 — both agree).
- ‘City gas distribution (COD)’ in the text should read CGD.
- Field-based = Digboi; market-based = Barauni (fed by pipeline from Assam). Nunmati (Guwahati) is also near oilfields (UPSC 1987).
- Narimanam oilfield is in the Kaveri delta (UPSC 1987); Naharkatia and Moran are in the Brahmaputra valley (1990).
Beyond NCERT
- India is the world's second-largest coal producer (after China); domestic output crossed 1 billion tonnes in 2024–25 (Ministry of Coal). Yet it imports coking coal for steel and some thermal coal (UPSC 2012, 2015).
- Coal mines were nationalised in 1971–73; Coal India was formed in 1975.
- Digboi's refinery (1901) is among the oldest operating refineries in the world.
- Unconventional gas: coal-bed methane and shale gas (Cambay, Kaveri, KG basins — UPSC 2016).
5. Nuclear energy
In simple wordsA pinch of uranium can release as much energy as a trainload of coal. India has little uranium but some of the world's largest thorium sands — so its long-term plan is to learn to burn thorium.
Uranium occurs in Dharwar rocks — along the Singhbhum copper belt, in Udaipur, Alwar and Jhunjhunu (Rajasthan), Durg (Chhattisgarh), Bhandara (Maharashtra) and Kullu (Himachal). Thorium comes mainly from monazite and ilmenite in the beach sands of Kerala and Tamil Nadu; the world's richest monazite deposits are in Palakkad and Kollam (Kerala), near Visakhapatnam and in the Mahanadi delta. The Atomic Energy Commission (1948) and the Atomic Energy Institute, Trombay (1954, renamed Bhabha Atomic Research Centre in 1967) built the programme.
⤵ India's three-stage nuclear programme (Beyond NCERT) — why thorium matters
Stage 1: pressurised heavy-water reactorsburn scarce natural uranium (Dharwar ores) → electricity + plutonium
Stage 2: fast breeder reactorsplutonium fuel breeds more fuel; thorium blanket → uranium-233 (PFBR, Kalpakkam)
Stage 3: thorium-based reactorsuse India's huge monazite thorium (Kerala, TN, Odisha coasts) for the long term
Beyond NCERT — the three-stage plan
- Stage 1: pressurised heavy-water reactors burn natural uranium. Stage 2: fast breeder reactors use plutonium and breed more fuel — the 500 MWe Prototype Fast Breeder Reactor at Kalpakkam (Mains 2026). Stage 3: reactors using thorium, India's abundant fuel.
- Tarapur (1969) was the first station (exercise Q1-ii). Kudankulam (Tamil Nadu) has the largest units, built with Russia (UPSC 1999).
- India's power reactors use natural or low-enriched uranium; weapons-grade levels are not needed for electricity (UPSC 2023, Statement II false).
Exam traps
- India has large thorium reserves (UPSC 1987); monazite yields thorium and rare earths (1991, 1994, 2022) — and Kerala's monazite also contains some uranium (2009).
- Ilmenite and rutile of the beach sands are ores of titanium (2023).
- Kakrapar is in Gujarat, Kaiga in Karnataka, Narora in UP, Rawatbhata near Kota (Rajasthan).
6. Non-conventional energy and hydel
In simple wordsFossil fuels are savings that run out; sun, wind, tides and the earth's heat are a salary that keeps coming. The salary is spread across the whole country, does not pollute, and once the panels and turbines are paid for, it is cheap.
| Source | What NCERT says | Where (NCERT) |
|---|---|---|
| Solar | Photovoltaics and solar thermal; solar thermal is cost-competitive, eco-friendly, easy to build; used in heaters, crop dryers, cookers | Western India — Gujarat, Rajasthan |
| Wind | Pollution-free, inexhaustible; turbines turn wind's kinetic energy into electricity; trades, westerlies, monsoon, land and sea breezes | Rajasthan, Gujarat, Maharashtra, Karnataka |
| Tidal and wave | Oceans as an infinite store; large tidal waves on the west coast — potential not yet used | West coast |
| Geothermal | Heat of magma and hot springs; first tapped in Boise, Idaho (1890) | Manikaran (Himachal Pradesh) |
| Bio-energy | From farm residues, municipal and industrial waste → electricity, heat, cooking gas; cleans waste, helps rural economy, eases pressure on fuelwood | Municipal waste-to-energy at Okhla (Delhi) |
NCERT's solar sentenceNCERT says solar energy is ‘7 per cent more effective than coal or oil based plants and 10 per cent more effective than nuclear plants’ without defining ‘effective’. Treat it as a textbook claim, not an exam fact; real solar panels convert roughly a fifth of sunlight to electricity (Beyond NCERT).
Hydel power is not discussed in the chapter, though exercise Q3(ii) asks for an essay on it. The essentials are below (Beyond NCERT).
Beyond NCERT — hydel and the energy transition
- India's first hydel plant was at Darjeeling (Sidrapong, 1897); Sivasamudram on the Kaveri (1902) was the first large one. The Central Electricity Authority puts large-hydro potential at about 145 GW, much of it in the Himalaya and the north-east, still largely untapped.
- Big projects: Bhakra–Nangal (Sutlej; UPSC 1979), Tehri (Bhagirathi; UPSC 2008), Nathpa Jhakri (Sutlej, 1,500 MW), Koyna, and the Damodar Valley Corporation — independent India's first multipurpose project (UPSC 2004).
- Small hydro (up to 25 MW) is classed as renewable under the Ministry of New and Renewable Energy.
- Targets: 500 GW of non-fossil capacity by 2030 (announced 2021); India's updated NDC (2022) aims for 50 per cent of installed power capacity from non-fossil sources by 2030; net zero by 2070. Programmes: National Solar Mission (2010), International Solar Alliance (2015), PM Surya Ghar rooftop scheme (2024), Green Energy Corridors for transmission (Mains 2013).
- Wind: Muppandal (Tamil Nadu) and Satara (Maharashtra; UPSC 2005) are well-known farms. Tidal potential is greatest in the Gulfs of Khambhat and Kachchh and the Sundarbans. Puga valley (Ladakh) has geothermal potential.
Exam traps
- Non-renewable in exercise Q1(iii) = thermal; hydel, solar and wind are renewable.
- India's largest source of electricity is thermal (coal) — UPSC 1982, and still true.
- Biogas is the non-conventional rural option (UPSC 1984, 1988); fuelwood and dung cakes are traditional.
- Photovoltaics turns light directly into electricity (DC); solar thermal uses heat (UPSC 2014).
7. Conservation of mineral resources
In simple wordsIf a family heirloom cannot be replaced, you use it carefully, repair it, lend it to no one, and find something else for everyday use. Minerals need exactly that treatment.
Sustainable development means joining economic growth with environmental care. Traditional resource use creates huge waste and other problems, so resources must be protected for future generations.
⤵ NCERT's conservation strategies
Replace exhaustible energysolar, wind, wave, geothermal — inexhaustible
Recycle metalsuse scrap — especially <b>copper, lead, zinc</b>, where India's reserves are meagre
Substituteuse substitutes for scarce metals to cut consumption
Cut exportsreduce export of strategic and scarce minerals so reserves last longer
Beyond NCERT
- Mining's environmental costs — deforestation, dumps, acid drainage, dust, displacement of tribal communities — are a frequent Mains theme (2013 illegal mining and coal ‘go/no-go’ zones; 2017 coal mining ‘still inevitable’; 2025 mining as an environmental hazard).
- Remedies: scientific mine closure and land reclamation, District Mineral Foundations for affected people, star-rating of mines, and the National Critical Mineral Mission (2025) for minerals such as lithium and rare earths (UPSC 2026).
NCERT's in-text questions and activities — short answers
Why is the major iron and steel industry located in the north-eastern plateau region? (page 54)
Iron ore (Singhbhum, Kendujhar, Bonai), coking coal (Jharia, Raniganj, Bokaro), manganese and limestone all occur within short distances; bulky raw materials are cheap to assemble; water (Damodar, Subarnarekha), railways and Kolkata port are near. Hence Jamshedpur, Bokaro, Durgapur, Rourkela, Burnpur, Bhilai.
Find out the specific regions where these minerals are extracted. (page 54)
Iron ore — Singhbhum, Kendujhar, Mayurbhanj, Sundergarh; coal — Jharia, Raniganj, Bokaro, Giridih, Karanpura, Talcher, Korba; manganese — Bonai, Kendujhar, Sundergarh; bauxite — Lohardaga, Kalahandi, Koraput; mica — Hazaribagh–Kodarma.
Why and where was the Dandi March organised by Mahatma Gandhi? (page 54)
In 1930, from Sabarmati to Dandi on the Gujarat coast, to break the salt law by making salt from sea water — a protest against the British salt tax that hit every Indian.
Manganese mines in Odisha lie in the central part of the iron-ore belt. Can you find out its reason? (page 55)
Both are formed in the same Dharwar rocks, and manganese is used with iron ore in steel-making, so the steel plants of the region draw both from the same belt.
Collect information about cross-country gas pipelines laid by GAIL under ‘One Nation One Grid’. (page 60)
Examples: the HVJ (Hazira–Vijaipur–Jagdishpur) and its extension to Delhi; the Dahej–Vijaipur line; Jagdishpur–Haldia–Bokaro–Dhamra (‘Pradhan Mantri Urja Ganga’) to the east; the Kochi–Mangaluru line; and the north-east gas grid. Together they form the One Nation One Gas Grid (Beyond NCERT).
How is India utilising non-conventional energy resources? Discuss. (page 63)
Large solar parks in Rajasthan and Gujarat and rooftop solar; wind farms in Tamil Nadu, Gujarat, Maharashtra, Karnataka, Rajasthan; small hydro in hill States; biomass, bagasse cogeneration and waste-to-energy (Okhla); pilot geothermal (Manikaran) and potential tidal sites (Gulf of Khambhat). Renewables are now a large and growing share of installed capacity (Beyond NCERT).
NCERT exercise — answer outlines
Try each question yourself first, then open the outline to compare. The three multiple-choice questions are in the self-check below.
Give an account of the distribution of mica in India. (30 words)
Jharkhand: high-quality belt 150 km × 22 km in lower Hazaribagh plateau (Kodarma); Andhra Pradesh: Nellore (best quality); Rajasthan: 320 km belt Jaipur–Bhilwara, Udaipur; also Telangana, Karnataka, TN, Kerala, Maharashtra, West Bengal.
What is nuclear power? Mention the important nuclear power stations in India. (30 words)
Electricity from heat released by splitting (fission of) uranium or thorium atoms. Stations: Tarapur (Maharashtra), Rawatbhata (Rajasthan), Kalpakkam (TN), Narora (UP), Kaiga (Karnataka), Kakrapar (Gujarat); Kudankulam (TN, Beyond NCERT).
Name non-ferrous metals. Discuss their spatial distribution. (30 words)
Bauxite — Odisha (Kalahandi, Koraput), Jharkhand (Lohardaga), Gujarat, Chhattisgarh (Amarkantak), MP (Katni), Maharashtra. Copper — Singhbhum (Jharkhand), Balaghat (MP), Khetri–Jhunjhunu, Alwar (Rajasthan). India is otherwise poor in non-ferrous metals.
What are non-conventional sources of energy? (30 words)
Renewable, mostly pollution-free sources — solar, wind, tidal and wave, geothermal, bio-energy (and small hydro) — more evenly spread than fossil fuels and cheap after the initial cost.
Write a detailed note on the petroleum resources of India. (150 words)
Nature: hydrocarbons in tertiary sedimentary rocks; ‘liquid gold’ — fuel and petrochemicals.
History: Digboi only producer until ONGC (1956); Mumbai High found 1973–74, production 1976.
Fields: Assam — Digboi, Naharkatiya, Moran; Gujarat — Ankaleshwar, Kalol, Mehsana, Nawagam, Kosamba, Lunej; offshore — Mumbai High, Bassein; east coast — Krishna–Godavari, Kaveri (Narimanam).
Refining: field-based (Digboi) and market-based (Barauni); about two dozen refineries, mostly coastal (Jamnagar, Mumbai, Kochi, Visakhapatnam, Haldia).
Gas: Mumbai High, Cambay, KG; HVJ pipeline.
Issues: heavy import dependence, energy security, need for exploration and alternatives.
Diagram: the refinery flow.
History: Digboi only producer until ONGC (1956); Mumbai High found 1973–74, production 1976.
Fields: Assam — Digboi, Naharkatiya, Moran; Gujarat — Ankaleshwar, Kalol, Mehsana, Nawagam, Kosamba, Lunej; offshore — Mumbai High, Bassein; east coast — Krishna–Godavari, Kaveri (Narimanam).
Refining: field-based (Digboi) and market-based (Barauni); about two dozen refineries, mostly coastal (Jamnagar, Mumbai, Kochi, Visakhapatnam, Haldia).
Gas: Mumbai High, Cambay, KG; HVJ pipeline.
Issues: heavy import dependence, energy security, need for exploration and alternatives.
Diagram: the refinery flow.
Write an essay on hydel power in India. (150 words)
Note: not covered in the chapter — use the Beyond NCERT box.
Nature: renewable electricity from falling water; storage and run-of-river types.
History: Darjeeling 1897, Sivasamudram 1902; multipurpose projects after 1947 — Bhakra–Nangal, DVC, Hirakud, Nagarjuna Sagar.
Distribution: Himalaya and north-east (largest untapped potential — about 145 GW total), Western Ghats (Koyna, Idukki, Sharavathi), central India.
Advantages: clean, cheap to run, peaking power, irrigation and flood control.
Problems: high cost and long gestation, submergence and displacement (Tehri, Sardar Sarovar), seismic and ecological risks in the Himalaya, seasonal flow.
Way forward: run-of-river and small hydro, pumped storage, basin planning.
Diagram: storage vs run-of-river sketch.
Nature: renewable electricity from falling water; storage and run-of-river types.
History: Darjeeling 1897, Sivasamudram 1902; multipurpose projects after 1947 — Bhakra–Nangal, DVC, Hirakud, Nagarjuna Sagar.
Distribution: Himalaya and north-east (largest untapped potential — about 145 GW total), Western Ghats (Koyna, Idukki, Sharavathi), central India.
Advantages: clean, cheap to run, peaking power, irrigation and flood control.
Problems: high cost and long gestation, submergence and displacement (Tehri, Sardar Sarovar), seismic and ecological risks in the Himalaya, seasonal flow.
Way forward: run-of-river and small hydro, pumped storage, basin planning.
Diagram: storage vs run-of-river sketch.
What to remember
Numbers
Coal reserves in Damodar, Sone, Mahanadi, Godavari valleysover 97%
Bituminous, non-coking share of coalabout 80%
Iron ore reserves in eight Statesabout 95%
Jharkhand mica belt150 km × 22 km (lower Hazaribagh)
Rajasthan mica beltabout 320 km, Jaipur–Bhilwara
ONGC set up1956
Mumbai High160 km offshore; production 1976
Atomic Energy Commission1948
Trombay institute / renamed BARC1954 / 1967
First nuclear station (Beyond NCERT)Tarapur, 1969
Geothermal: first use abroad / Indian plantBoise, Idaho (1890) / Manikaran (HP)
Waste-to-energy exampleOkhla, Delhi
Coal output (Beyond NCERT)over 1 billion tonnes in 2024–25
Non-fossil targets (Beyond NCERT)500 GW by 2030; 50% of capacity by 2030; net zero 2070
Small hydro limit (Beyond NCERT)up to 25 MW
One-liners
- Minerals: uneven, quality inversely related to quantity, exhaustible.
- Most minerals east of the Mangaluru–Kanpur line; alluvial plains have almost none.
- NE plateau = India's mineral heartland — iron, coal and manganese side by side.
- Gondwana coal in Peninsular valleys; tertiary coal in the north-east; lignite at Neyveli.
- Digboi is field-based, Barauni market-based.
- Uranium in Dharwar rocks; thorium in Kerala's monazite.
- Renewables are more equitably distributed than fossil fuels.
- Conserve by recycling scrap, substituting and curbing exports.
Traps to avoid
- Jharia is the largest coal field, then Raniganj.
- Fuel minerals are non-metallic (organic).
- Bauxite → aluminium; India is poor in non-ferrous metals except bauxite.
- Mumbai High: NCERT says found 1973; most sources say 1974.
- Hydel is missing from the chapter though the exercise asks for it.
- Thermal is non-renewable; hydel, solar, wind renewable.
- Narimanam oilfield is in the Kaveri delta.
- Ilmenite and rutile are titanium ores.
How to strategise
Prelims — what UPSC asks
- Mineral locations dominated 1980–2010: match-the-following on mines and minerals (1982, 1984 ×2, 1988, 1989 ×2, 1990 ×2, 1991, 1996, 1997, 1998, 2000, 2004), maps of iron ore and limestone (1983, 2001), Chhattisgarh's minerals (2008), Namchik–Namphuk coal (2008), Balaghat and Majhgawan (2007). Learn the tables above State by State.
- Coal and oil: lignite in TN and Gujarat (1985, 1988), Neyveli tertiary coal (1993), anthracite (1989, 1999), Indian coal's high ash (2013), Gondwana coal (2010), coal imports (2012); KG basin oil (1980), refineries at ports and near fields (1981, 1985, 1987), Narimanam (1987), Brahmaputra fields (1990), Shahgarh gas (2007), shale gas basins (2016), CBM (2014).
- Nuclear and renewables: thorium and monazite (1987, 1991, 1994, 2009, 2022), ilmenite (2023), uranium vs coal (2023), Koodankulam (1999), atomic plants by State (2005); thermal largest source (1982), conventional hydropower (1987), biogas (1984, 1988), Satara wind (2005), solar PV vs thermal (2014), biomass gasification (2012); critical minerals (2026).
- Hydel (not in the chapter): Bhakra (1979), Tehri (2008), DVC (2004).
Mains — where it appears and how to answer
- GS1: shale oil and gas (2013), raw materials for atomic energy (2013), refineries away from crude areas (2017), coal mining inevitable despite damage (2017), solar potential and regional variation (2020), uneven distribution of mineral oil (2021), wind potential and limited spread (2022), benefits of solar (2025).
- GS3: illegal mining and coal ‘go/no-go’ zones (2013), run-of-river hydel (2013), green energy corridor (2013), coal power plant impacts (2014), falling solar costs (2015), renewable targets (2016), nuclear expansion (2018), solar initiatives (2020), 50% renewables by 2030 (2022), mining as hazard (2025), clean energy independence by 2047 (2025), fast breeder reactor at Kalpakkam (2026), energy security (2026).
- Answer frame: geology (Peninsular rocks, Gondwana, tertiary) → distribution (belts, named fields) → use and economic importance → problems (imports, quality, environment, displacement) → policy (exploration, renewables targets, three-stage nuclear plan, recycling) → way forward.
- Draw the mineral belts as labelled bands, the steel raw-material cluster, or the energy classification — never a full map of India if it is risky to sketch.
Self-check
Tap an option. NCERT's own exercise questions come first; the rest test the figures and common confusions.
1. In which one of the following States are the major oil fields located?
2. At which one of the following places was the first atomic power station started?
3. Which one of the following is a non-renewable source of energy?
4. Over 97 per cent of India's coal reserves lie in the valleys of:
5. Digboi and Barauni are examples, respectively, of:
6. Thorium in India is obtained mainly from:
7. Which mineral belt lacks coal except Neyveli lignite?
UPSC questions from this chapter
Open any question to attempt it in the Question bank — your attempt is saved to your progress.