Resources and Industries Exercise Solutions | KalviGavani

How to Use This Page

1. Read the textbook first — these solutions supplement, not replace, your textbook reading. 2. Attempt every question on your own before checking the answer. 3. For MCQs and fill-ups, note the keyword or concept being tested. 4. For short answers, memorise at least 3 key points per question. 5. For detailed answers, use the sub-headings and tables to structure your own writing. 6. Practise map work — locate mineral belts, industrial regions, and major ports on an outline map of India. 7. Revise the Common Mistakes section before every exam.

Key Concepts (Quick Recap)

Resource Classification

Major Minerals of India

Energy Resources

I. Choose the Correct Answer (MCQs)

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II. Fill in the Blanks

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III. True or False

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IV. Match the Following

Set A — Minerals and Centres

1. Jharia — (c) Coal 2. Bailadila — (d) Iron ore 3. Neyveli — (a) Lignite 4. Koderma — (b) Mica 5. Kolar — (e) Gold

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Set B — Industries and Raw Materials

1. Cotton textile — (d) Raw cotton 2. Iron and steel — (c) Iron ore and coal 3. Sugar — (a) Sugarcane 4. Cement — (b) Limestone 5. Paper — (e) Wood pulp

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Set C — Steel Plants and Locations

1. TISCO — (b) Jamshedpur 2. Bokaro — (d) Jharkhand 3. Bhilai — (e) Chhattisgarh 4. Rourkela — (c) Odisha 5. Durgapur — (a) Bhilai (Note: Durgapur is in West Bengal. Column B option (a) "Bhilai" in this set refers to a distractor. The correct match for Durgapur is West Bengal, not listed as an option. Correction: Durgapur — West Bengal)

V. Short Answers

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VI. Detailed Answers

Based on Origin

• Biotic resources: Derived from living organisms — forests, wildlife, fisheries, fossil fuels (coal and petroleum formed from ancient organisms).
• Abiotic resources: Derived from non-living matter — rocks, minerals, water, air, metals like iron and copper.

Based on Renewability

• Renewable resources: Can be regenerated or replenished naturally — solar energy, wind energy, hydro power, biomass, tidal energy. These are available in infinite supply if used sustainably.
• Non-renewable resources: Cannot be replaced once used — coal, petroleum, natural gas, iron ore, bauxite, gold. These took millions of years to form through geological processes.

Based on Development Stage

• Potential resources: Exist in a region but have not been fully utilised due to lack of technology or investment. Example: vast iron ore deposits in Jharkhand not yet fully mined.
• Developed resources: Already surveyed, quantified, and currently being used. Example: coal from Jharia and Raniganj mines.

Based on Availability (Stock vs Reserve)

• Stock: Resources that exist but cannot be used with current technology. Example: water in the ocean (desalination is expensive and not yet widespread).
• Reserve: Subset of stock that can be used with existing technology and is economically viable. Example: coal reserves in Raniganj that are being actively mined.

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Iron Ore

• India is one of the largest producers of iron ore in the world.
• Major types: haematite (used in steel) and magnetite (high iron content).
• Odisha is the leading producer — Bailadila, Koira, and Barbil mines.
• Jharkhand — Noamundi and Gua mines.
• Chhattisgarh — Dalli-Rajhara and Bailadila (southern part extends from Odisha).
• Karnataka — Kudremukh and Bellary-Hospet belt.
• Most iron ore is exported through ports like Paradip, Visakhapatnam, and Mormugao.

Coal

• India ranks among the top five coal-producing countries.
• Bituminous coal (highest quality for steel and power) — Jharia, Bokaro, Raniganj.
• Lignite (brown coal, lower grade) — Neyveli (Tamil Nadu).
• Major coal-producing states: Jharkhand, Odisha, Chhattisgarh, West Bengal, Madhya Pradesh.
• Coal is the primary energy source for thermal power plants and steel production.

Bauxite

• Bauxite is the ore of aluminium — lightweight, corrosion-resistant metal.
• Odisha is the leading producer — Panchpatmali deposits in Koraput.
• Other states: Jharkhand (Amarkantak plateau), Gujarat, Maharashtra, Chhattisgarh.
• Aluminium smelting requires abundant electricity — plants are near power sources.

Manganese

• Essential for iron and steel alloy production.
• Odisha leads, followed by Karnataka and Madhya Pradesh.
• Key centres: Balaghat (MP), Tumkur (Karnataka).

Mica

• India is the largest producer of mica in the world.
• Used in electrical and electronics industry for insulation.
• Jharkhand (Koderma, Hazaribagh) is the leading producer.
• Also found in Andhra Pradesh (Nellore) and Rajasthan (Ajmer).

Gold

• Karnataka is the leading gold-producing state — Kolar, Hutti, and Raichur mines.
• Kolar Gold Fields were once among the deepest mines in the world.
• Production has declined but exploration continues.

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Classification by Size

Classification by Ownership

Classification by Raw Material

Major Industries of India

Iron and Steel Industry:

• India is the second-largest steel producer in the world.
• Key plants and their locations:

• Location factors: proximity to iron ore, coal, limestone, water (Damodar, Subarnarekha), and transport.

Cotton Textile Industry:

• Second largest industry after agriculture in employment.
• Mumbai — "Cottonopolis of India," humid climate, port, cotton-growing hinterland.
• Ahmedabad — Second largest, near cotton areas of Gujarat.
• Coimbatore — "Manchester of South India," significant in Tamil Nadu.
• Other centres: Chennai, Kolkata, Kanpur, Surat.

Cement Industry:

• India is the second-largest cement producer globally.
• Requires limestone, gypsum, coal, and power.
• Located near limestone deposits — Satna (MP), Chandrapur (Maharashtra), Kurnool (AP).

Information Technology (IT):

• Bangalore (Bengaluru) — "Silicon Valley of India."
• Other hubs: Hyderabad, Chennai, Pune, Gurgaon, Noida.
• India is a global leader in IT services and software exports.

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Conventional Energy Sources

Coal:

• Most abundant fossil fuel in India — powers thermal plants and steel industry.
• Major coalfields: Jharia, Raniganj, Bokaro, Neyveli (lignite).
• India has large coal reserves but also imports coking coal for steel.

Petroleum:

• Found in sedimentary rock formations.
• Major oilfields: Mumbai High (offshore), Digboi (Assam — oldest), Ankleshwar (Gujarat).
• Refineries at Mumbai, Chennai, Kochi, Visakhapatnam, Mathura.

Natural Gas:

• Cleaner than coal and petroleum.
• Found in Krishna-Godavari Basin, Bombay High, and Tripura.
• Used in power generation, fertiliser production, and as CNG for vehicles.

Nuclear Energy:

• Uses uranium and thorium as fuel.
• India has limited uranium but large thorium reserves (monazite sands of Kerala).
• Nuclear power plants: Tarapur (Maharashtra), Rawatbhata (Rajasthan), Kalpakkam (Tamil Nadu), Narora (UP), Kakrapar (Gujarat).

Non-Conventional Energy Sources

Solar Energy:

• India receives abundant solar radiation — 5,000 trillion kWh per year.
• Major solar parks: Bhadla (Rajasthan), Pavagada (Karnataka), Kamuthi (Tamil Nadu).
• Used for lighting, heating, electricity generation through photovoltaic cells.

Wind Energy:

• India is among the top five wind energy producers globally.
• Tamil Nadu leads — Muppandal is Asia's largest wind farm.
• Other states: Gujarat, Maharashtra, Karnataka, Rajasthan.

Tidal Energy:

• Generated from ocean tides.
• Potential sites: Gulf of Kutch, Gulf of Khambhat, Sundarbans.
• Still in experimental stages in India.

Geothermal Energy:

• Heat from the earth's interior used to generate power.
• Potential sites: Puga Valley (Ladakh), Manikaran (Himachal Pradesh), Bakreshwar (West Bengal).

Biogas:

• Produced from organic waste (cattle dung, crop residue) through anaerobic digestion.
• Widely used in rural India for cooking and lighting.
• Gobar gas plants are promoted under the National Biogas and Manure Management Programme.

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What is Resource Conservation?

• Resource conservation means using resources carefully and wisely so they last longer and are available for future generations.
• It involves reducing wastage, reusing items, and recycling materials.
• The 3Rs — Reduce, Reuse, Recycle — are the core principles.

The 3Rs Explained

Why Conservation is Necessary

• Non-renewable resources (coal, petroleum, minerals) are finite — once exhausted, they cannot be replaced.
• Over-exploitation leads to environmental degradation — pollution, deforestation, soil erosion, and loss of biodiversity.
• Renewable resources (water, forests) can also be depleted through misuse and pollution.
• Growing population and industrialisation increase demand for resources.
• Intergenerational equity — we must leave enough for future generations.

Sustainable Development

• Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.
• Requires balancing economic growth with environmental protection.
• Resource planning at national, state, and local levels is essential.
• India's National Resource Policy promotes judicious use and equitable distribution.

Steps for Resource Conservation

1. Use public transport and carpooling to reduce fossil fuel consumption. 2. Switch to renewable energy — solar panels, wind energy for power. 3. Practise rainwater harvesting to conserve water. 4. Afforestation — plant trees to prevent soil erosion and maintain the water cycle. 5. Avoid overuse of chemical fertilisers — they degrade soil quality. 6. Recycle e-waste, paper, plastic, and metal through proper channels. 7. Follow government regulations on mining, deforestation, and emission standards. 8. Educate communities about the importance of conservation and the 3Rs.

Common Mistakes to Avoid

1. Confusing renewable and non-renewable resources: Solar, wind, and hydro are renewable; coal, petroleum, and minerals are non-renewable. Do not mix them up in the exam.

2. Writing "mica" as a metallic mineral: Mica is a non-metallic mineral used for insulation. It is not an ore of any metal.

3. Confusing iron ore types: Haematite is the most widely used in steel production; magnetite has the highest iron content but is less abundant. Know the difference.

4. Mislocating steel plants: Memorise each plant with its state — Bhilai (Chhattisgarh, not MP), Bokaro (Jharkhand, not Odisha), Rourkela (Odisha, not Jharkhand).

5. Forgetting lignite vs bituminous coal: Neyveli produces lignite (brown coal), while Jharia and Raniganj produce bituminous coal. These are different grades with different uses.

6. Confusing agro-based and mineral-based industries: Cotton textile is agro-based (uses agricultural raw cotton). Iron and steel is mineral-based (uses iron ore). Check the raw material before classifying.

7. Omitting collaboration details for steel plants: Each public-sector steel plant has a specific foreign collaborator — Bhilai (Russia), Rourkela (Germany), Durgapur (Britain). These are frequently tested.

8. Writing vague answers for industrial location factors: Do not just say "resources" — be specific: raw materials, power supply, labour, transport, market, capital, and government policy. Name all seven.

9. Confusing public, private, joint, and cooperative sectors: SAIL is public (government-owned), TISCO is private, Oil India is joint sector, AMUL is cooperative. Know the ownership pattern.

10. Writing only one or two points for five-mark questions: Detailed answers need at least five distinct points with sub-headings, examples, and (where relevant) map references. Writing just two or three points will lose marks.

Exam Checklist

• [ ] I can define resources and classify them (biotic/abiotic, renewable/non-renewable, potential/developed, stock/reserve)
• [ ] I can list the major minerals of India with their producing states and mining centres
• [ ] I can differentiate between conventional and non-conventional energy sources with examples
• [ ] I can locate major coalfields (Jharia, Raniganj, Neyveli) and oilfields (Mumbai High, Digboi) on a map
• [ ] I can classify industries by size, ownership, and raw material basis with correct examples
• [ ] I can name all five major steel plants with their states and foreign collaborators
• [ ] I can explain the factors affecting industrial location with specific examples
• [ ] I can describe the cotton textile industry with Mumbai, Ahmedabad, and Coimbatore as case studies
• [ ] I can explain the 3Rs (Reduce, Reuse, Recycle) and their role in resource conservation
• [ ] I can write at least five clear points for every detailed-answer question with sub-headings and data
• [ ] I have practised locating mineral belts, industrial regions, and major ports on an outline map of India

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Internal Links

• [Resources and Industries Guide](/school/tamil-nadu-state-board/class/10/social/resources-and-industries)
• [All Class 10 Social Science Solutions](/school/tamil-nadu-state-board/class/10/social/solutions)
• [Class 10 Social Science Subject Guide](/school/tamil-nadu-state-board/class/10/social)