Manufacturing Industries ICSE Class 10: Agro-based and Mineral-based

What Manufacturing Industries is about

Weightage: CISCE publishes no chapter weightage. Each Part II chapter is one of nine 10-mark questions (2 + 2 + 3 + 3), of which you answer any five; the chapter can also appear in the Part I MCQs and the map of India question.Source: CISCE ICSE 2027 Specimen Question Paper 502, Geography (H.C.G. Paper 2)

Key concepts

Importance and classification of industries

Importance: industries add value to raw materials; provide employment and reduce pressure on agriculture; supply machinery, fertilisers and tools that modernise farming; earn foreign exchange through exports; make the country self-reliant; and promote the growth of transport, trade and towns.

Classification:

• By size: large-scale industries need huge capital, many workers and large machines (iron and steel, cotton mills); small-scale industries need less capital and fewer workers (handloom, small engineering units).
• By raw material: agro-based industries use farm products (sugar, cotton textiles, jute, silk); mineral-based industries use minerals (iron and steel, cement, petrochemicals).
• By ownership: public sector (owned and run by the government, such as the Rourkela and Visakhapatnam steel plants); private sector (owned by individuals or companies, such as Tata Steel); joint sector (owned by the government and private firms together); cooperative sector (owned and run by the producers or suppliers of raw materials, or by workers, who share the profits, such as many sugar mills of Maharashtra).

Worked example

(2 marks) Based on ownership, what type of industry is the Visakhapatnam Steel Plant? What is meant by a cooperative-sector industry?

Try it first, then show the solutionSolution

1. Visakhapatnam Steel Plant is a public-sector industry, owned and run by the government - 1 mark.
2. A cooperative-sector industry is owned and operated by the producers or suppliers of the raw material (or workers), who share the profits, such as cooperative sugar mills - 1 mark.

Answer: The Visakhapatnam Steel Plant is in the public sector. A cooperative-sector industry is owned and run jointly by the producers of the raw material or by the workers, who share the profits, as in the cooperative sugar mills of Maharashtra.

Sugar industry

An agro-based, seasonal industry.
Location: mills are located close to the cane fields, because sugarcane must be crushed within about 24 hours of cutting; otherwise it dries, loses weight and its sucrose content falls. Cane is also bulky and costly to transport.
Distribution: Uttar Pradesh and Maharashtra are the leading states; Karnataka, Tamil Nadu and Gujarat are also important.
Shift to the south (peninsular India): higher sucrose content and yield per hectare in the tropical climate; a longer crushing season; and well-run cooperative sugar mills in Maharashtra.
By-products:

• Bagasse (the fibrous residue): used as fuel in the mills and to make paper, cardboard and fibre board.
• Molasses: used to make alcohol, chemicals and yeast.
• Press mud: its wax is used in shoe polish and carbon paper; the rest is used as manure.

Note: sugar, jaggery and khandsari are products; bagasse, molasses and press mud are by-products.

Worked example

(3 marks) An industry's by-products are used to make shoe polish, carbon paper and cardboard. Name the industry and two of its by-products with their uses.

Try it first, then show the solutionSolution

1. The sugar industry - 1 mark.
2. Bagasse: used as mill fuel and to make paper and cardboard - 1 mark.
3. Press mud: its wax is used in shoe polish and carbon paper (or molasses for alcohol) - 1 mark.

Answer: The sugar industry. Its by-products include bagasse, used as fuel and for paper and cardboard, and press mud, whose wax goes into shoe polish and carbon paper; molasses is used to make alcohol.

Cotton textile industry

India's largest agro-based industry; the first modern mill was set up in Mumbai in 1854.
Main centres: Mumbai (the 'Cottonopolis of India'), Ahmedabad (the 'Manchester of India'), Coimbatore, Surat, Kanpur, Indore, Solapur, Nagpur and Kolkata.

Factors favouring Mumbai and Ahmedabad: nearness to the cotton-growing black-soil areas of Maharashtra and Gujarat; a humid coastal climate that keeps cotton yarn from breaking; port facilities for importing machinery and exporting cloth (Mumbai port; Kandla for Ahmedabad); cheap labour; capital from local merchants; good rail and road links; power supply; and a large market.

Factors favouring Kolkata (the Hooghly region): cheap and plentiful labour from Bihar, Odisha and eastern Uttar Pradesh; humid climate; the port of Kolkata for importing machinery and raw materials; coal from the nearby Raniganj and Jharia fields for power; capital; and the large market of eastern India. Kolkata does not have cotton-growing black soil nearby, so 'black soil' is not a reason there.

Worked example

(2 marks) State two factors responsible for the growth of the cotton textile industry in Kolkata.

Try it first, then show the solutionSolution

1. Availability of cheap labour from the densely populated surrounding states - 1 mark.
2. The port of Kolkata for importing machinery and cotton and exporting cloth, with a humid climate and coal from Raniganj for power - 1 mark.

Answer: Kolkata's mills grew because of plentiful cheap labour from Bihar, Odisha and eastern Uttar Pradesh, and the port of Kolkata for imports and exports, helped by a humid climate and coal from Raniganj.

Silk textile industry

Sericulture is the rearing of silkworms for the production of raw silk. The mulberry silkworm (Bombyx mori) feeds on mulberry leaves and spins a cocoon of silk thread, which is reeled to obtain raw silk.
Varieties of silk in India: mulberry (the most important), tasar, eri and muga (golden silk of Assam).
Karnataka is the leading producer of mulberry silk because: (1) its moderate climate suits mulberry and silkworm rearing; (2) mulberry is widely grown, and sericulture is a long tradition with skilled, cheap labour; (3) state support and research institutes; (4) famous weaving centres (Bengaluru, Mysuru) and markets.
Other areas: West Bengal (Murshidabad), Andhra Pradesh, Tamil Nadu, Jammu and Kashmir, Assam (muga), Jharkhand (tasar); Varanasi and Kanchipuram are famous for silk weaving.

Worked example

(2 marks) What is sericulture? Give two reasons why Karnataka leads in silk production.

Try it first, then show the solutionSolution

1. Sericulture is the rearing of silkworms (Bombyx mori) on mulberry leaves to produce raw silk - 1 mark.
2. Karnataka: moderate climate suited to mulberry and silkworms, and a tradition of skilled, cheap labour with government support - 1 mark.

Answer: Sericulture is the rearing of silkworms, which feed on mulberry leaves, to obtain raw silk. Karnataka leads because its moderate climate suits mulberry and silkworms, and it has a long tradition of skilled, inexpensive labour backed by state support.

Integrated steel plants: Tata Steel and Rourkela

An integrated steel plant carries out every stage in one complex: from handling raw materials (iron ore, coking coal, limestone, manganese) through making pig iron in blast furnaces, converting it to steel, and rolling and shaping the steel into finished products. A mini steel plant is smaller; it uses scrap iron and sponge iron in electric furnaces, so it uses little or no coking coal (conserving coal), and is located near markets.

Tata Steel, Jamshedpur (Jharkhand): set up in 1907; private sector.

• Iron ore: Noamundi and Gua (Singhbhum, Jharkhand) and Gorumahisani (Mayurbhanj, Odisha).
• Coal: Jharia (and Bokaro) coalfields.
• Limestone and dolomite: from Odisha (Gangpur area) and nearby.
• Water: Subarnarekha and Kharkai rivers.
• Other: cheap labour from Jharkhand, Bihar, West Bengal and Odisha; port of Kolkata.

Rourkela Steel Plant (Odisha): public sector (SAIL), built with German collaboration.

• Iron ore: Barsua and nearby mines in Sundargarh and Keonjhar districts of Odisha.
• Coal: Jharia and Talcher.
• Limestone and dolomite: Birmitrapur and Purnapani (Odisha).
• Water: the Sankh and Koel rivers (which join to form the Brahmani).
• Power: Hirakud hydel project.

Worked example

(2 marks) State any one advantage of locating the steel plant at Rourkela, naming specific sources.

Try it first, then show the solutionSolution

1. Iron ore is available close by from Barsua and other mines of Sundargarh and Keonjhar - 1 mark.
2. Coal comes from Jharia and Talcher, water from the Sankh and Koel rivers, and power from Hirakud - 1 mark.

Answer: Rourkela is close to its raw materials: iron ore from Barsua (Sundargarh-Keonjhar), coal from Jharia and Talcher, limestone from Birmitrapur, water from the Sankh and Koel rivers and power from Hirakud.

Visakhapatnam Steel Plant

Run by Rashtriya Ispat Nigam Limited (RINL); public sector; in Andhra Pradesh. It is India's first shore-based integrated steel plant.
Sources:

• Iron ore: Bailadila mines in Chhattisgarh.
• Coal: from the Damodar valley fields and imported coking coal.
• Water: from local reservoirs and the Yeleru canal.

Advantages of the coastal location: the port of Visakhapatnam allows import of coking coal and machinery and export of steel; a good harbour; rail links to Bailadila.

Worked example

(2 marks) Why is the Visakhapatnam Steel Plant called a shore-based plant? Name its source of iron ore.

Try it first, then show the solutionSolution

1. It is located on the coast beside a port, so it can import coking coal and export steel by sea - 1 mark.
2. Its iron ore comes from Bailadila in Chhattisgarh - 1 mark.

Answer: It stands on the coast next to Visakhapatnam port, using the sea for importing coking coal and exporting steel. Its iron ore comes from Bailadila in Chhattisgarh.

Petrochemical and electronics industries

Petrochemical industry: products derived from crude oil and natural gas.
Products: plastics, synthetic fibres (nylon, polyester, acrylic), synthetic rubber, detergents, dyes, paints, fertilisers, pesticides and cosmetics. Household examples: plastic buckets and bottles, polyester clothes, detergents and nylon ropes.
Key centres: Jamnagar (Gujarat, a huge refinery-petrochemical complex), Vadodara (Koyali), Hazira, Mumbai (Trombay), Panipat, Haldia and Bongaigaon.
Relevance: cheap, light and durable substitutes for wood, metal, glass and natural fibres; raw materials for many industries; large employment and exports.

Electronics industry: makes televisions, computers, mobile phones, telecommunication equipment, components and defence electronics.
Key centres: Bengaluru (often called the electronic capital or Silicon Valley of India), Hyderabad, Pune, Chennai, Noida and Gurugram (Delhi region), Mumbai and Kolkata.
Relevance in the modern world: it has revolutionised daily life through communication, entertainment, banking, education and online services; it creates high-skill jobs and exports; and it supports defence, health care and industry through automation.

Worked example

(2 marks) Name two household products of the petrochemical industry and two centres of the industry.

Try it first, then show the solutionSolution

1. Products: plastic buckets and polyester clothing (also detergents, nylon ropes) - 1 mark.
2. Centres: Jamnagar and Vadodara (also Mumbai, Hazira, Panipat) - 1 mark.

Answer: Plastic buckets and polyester clothes are petrochemical products; Jamnagar and Vadodara in Gujarat are major centres.

Manufacturing Industries in real life

Each concept, met in an everyday situation. Read the situation, answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

Topics in this chapter

• Integrated Iron and Steel Plants: Tata Steel, Rourkela and Visakhapatnam

Manufacturing Industries: key facts

Tata Steel, Jamshedpur

1907; private; ore from Noamundi, Gua, Gorumahisani; coal from Jharia; water from Subarnarekha and Kharkai

Rourkela

Public (SAIL), German help; ore Barsua; coal Jharia, Talcher; water Sankh and Koel; power Hirakud

Visakhapatnam

Public (RINL); shore-based; ore Bailadila; coal Damodar valley and imports

Sugar by-products

Bagasse (fuel, paper, cardboard); molasses (alcohol); press mud (wax for shoe polish, carbon paper; manure)

Cotton textiles

Mumbai (Cottonopolis), Ahmedabad (Manchester of India), Coimbatore, Kolkata

First mill 1854, Mumbai.

Silk

$Sericulture=rearingsilkworms(Bombyxmori)onmulberry;Karnatakaleads$

Muga in Assam.

Ownership

$Public,private,joint,cooperative$

How the board asks Manufacturing Industries

The question patterns to expect, and the method that works for each.

Tricks to remember Manufacturing Industries

Short memory aids. Say each one aloud once, then use it on a question the same day.

• B-M-P

  Sugar's by-products: Bagasse, Molasses, Press mud.

  Use it when: By-products.

• Steel trio by owner

  Tata = private; Rourkela and Vizag = public.

  Use it when: Ownership MCQs.

• Rourkela's rivers

  Sankh and Koel make the Brahmani.

  Use it when: Water source.

• Vizag's ore from Bailadila

  'V gets B': Visakhapatnam from Bailadila.

  Use it when: Raw materials.

Manufacturing Industries: board-level solved questions

Ordered from board level to HOTS. Cover the solution, write your own, then compare step by step.

Case-study practice (Section B style)

Read the situation, then answer every part. In the board paper this is a 10-mark question split into 2 + 2 + 3 + 3 marks.

Where the marks are

How a typical answer is split into step marks. Show every step: a right final answer alone rarely earns full marks.

Where students lose marks in Manufacturing Industries

The slips examiners see most often, and what to write instead.

• ✗Mistake: Calling Visakhapatnam private, or misdefining cooperatives

  CISCE examiners' comments, 2024: candidates answered private sector and said a cooperative industry is under government and private companies.

  ✓Do this: Vizag = public (RINL); cooperative = owned by producers or workers.

  Usually costs: 2 marks.

• ✗Mistake: General 'availability of raw materials' without sources

  CISCE examiners' comments, 2024: for Rourkela, candidates wrote general availability of coal, ore and water without naming specific sources; in 2025 some named a different steel plant and so gave wrong suppliers.

  ✓Do this: Learn each plant's mines, coalfields and rivers.

  Usually costs: Up to 3 marks.

• ✗Mistake: Cotton-growing factors for a mill city

  CISCE examiners' comments, 2025: for Kolkata, candidates gave cotton-growing factors like black soil.

  ✓Do this: Industry location factors: labour, port, power, capital, market, climate.

  Usually costs: 2 marks.

• ✗Mistake: Products instead of by-products

  CISCE examiners' comments, 2025: candidates listed products of sugarcane instead of by-products.

  ✓Do this: By-products: bagasse, molasses, press mud.

  Usually costs: 1 to 2 marks.

• ✗Mistake: Vague terms and missing 'NOT'

  CISCE examiners' comments, 2024: candidates explained sericulture as silk production without rearing silkworms, gave vague answers for integrated steel plant and mini steel plant, and missed NOT.

  ✓Do this: Define precisely and underline negative words.

  Usually costs: 1 mark each.

Practice questions on Manufacturing Industries

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

1. Q1 · 1 mark · MCQBoard level

   Which of the following is NOT a centre of the iron and steel industry?
   (a) Rourkela
   (b) Jamshedpur
   (c) Visakhapatnam
   (d) Coimbatore

   Hint

   Manchester of South India.

   Answer

   (d) Coimbatore (a cotton textile centre).

2. Q2 · 1 mark · MCQBoard level

   Which of these household products is associated with the petrochemical industry?
   (a) Cotton towel
   (b) Plastic bucket
   (c) Wooden chair
   (d) Jute bag

   Hint

   Derived from oil.

   Answer

   (b) Plastic bucket.

3. Q3 · 2 marks · Very short answerBoard level

   Why must sugar mills be located near sugarcane fields?

   Hint

   Within a day.

   Answer

   Cane must be crushed within about 24 hours of cutting, or it dries and loses weight and sucrose; cane is also bulky and costly to transport.

4. Q4 · 2 marks · Very short answerBoard level

   Distinguish between public-sector and private-sector industries with one example each.

   Hint

   Who owns?

   Answer

   Public-sector industries are owned and run by the government, e.g. Rourkela Steel Plant. Private-sector industries are owned by individuals or companies, e.g. Tata Steel.

5. Q5 · 2 marks · Very short answerHarder board level

   Give two reasons for the importance of manufacturing industries for India.

   Hint

   Jobs and self-reliance.

   Answer

   They provide employment and reduce dependence on agriculture, and they make the country self-reliant while earning foreign exchange through exports.

6. Q6 · 3 marks · Short answerHarder board level

   Name two products and two centres of the electronics industry, and state its relevance today.

   Hint

   Phones and Bengaluru.

   Answer

   Products: mobile phones and computers. Centres: Bengaluru and Hyderabad. Relevance: it has transformed communication, banking and education, creates skilled jobs and earns exports.

7. Q7 · 3 marks · Short answerHOTS / competency

   Why is Kolkata's cotton textile industry not explained by 'black soil'? What factors explain it?

   Hint

   Raw cotton came from elsewhere.

   Answer

   Kolkata is far from the black-soil cotton belt, so raw cotton had to be brought in. Its industry grew because of cheap labour from surrounding states, the port for imports and exports, humid climate, coal from Raniganj and Jharia, capital and a large market.

8. Q8 · 3 marks · Short answerHOTS / competency

   'The petrochemical industry has changed what we wear and use.' Give three examples.

   Hint

   Fibres, plastics, detergents.

   Answer

   (1) Synthetic fibres like polyester and nylon in clothes. (2) Plastic goods such as buckets, bottles and furniture replacing metal and wood. (3) Detergents, paints and cosmetics in daily use.

9. Q9 · 2 marks · Very short answerHarder board level

   Mention two varieties of silk produced in India other than mulberry.

   Hint

   Assam's golden silk.

   Answer

   Muga (Assam) and tasar (also eri).

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1. 1.Which city is the Manchester of India?Show answer

   Ahmedabad.

2. 2.What is bagasse used for?Show answer

   Fuel, paper and cardboard.

3. 3.Where does Visakhapatnam get its iron ore?Show answer

   Bailadila, Chhattisgarh.

4. 4.When was Tata Steel set up?Show answer

   1907.

5. 5.Which state leads in silk?Show answer

   Karnataka.

Quick revision checklist

The night before the exam: can you do each of these without looking?

• ☐Classification: size, raw material, ownership (public, private, joint, cooperative).
• ☐Sugar: near fields; UP, Maharashtra; by-products bagasse, molasses, press mud.
• ☐Cotton: Mumbai, Ahmedabad (black soil, humidity, ports); Kolkata (labour, port, coal).
• ☐Silk: sericulture; Karnataka; mulberry, tasar, eri, muga.
• ☐Integrated vs mini steel plants.
• ☐Tata Steel: Noamundi ore, Jharia coal, Subarnarekha water.
• ☐Rourkela: Barsua ore, Jharia/Talcher coal, Sankh-Koel water.
• ☐Vizag: Bailadila ore, shore-based.
• ☐Petrochemicals: plastics, polyester; Jamnagar, Vadodara. Electronics: Bengaluru, Hyderabad.

Manufacturing Industries: frequently asked questions