Manufacturing Industries – Chapter 6 Class 10 Geography (NCERT)

Manufacturing Industries is Chapter 6 of Class 10 Geography (Contemporary India – II). This chapter explains the importance of Manufacturing industries in economic development, types of Manufacturing industries (agro-based, mineral-based, chemical, engineering, textile), and factors influencing their location. It highlights major industries in India such as iron and steel, cotton textiles, jute, cement, automobile, and IT, along with industrial regions, environmental issues, and the need for sustainable growth. Below are complete notes of this chapter (Manufacturing industries) aligned with NCERT, RBSE and CBSE board exam patterns.

Manufacturing

Production of goods in large qunatities after processing from raw materials to more valuable products is called Manufacturing. Examples: Paper from wood, Sugar from sugarcane, Iron and stell from iron ore, Aluminium from bauxite and clothes from yarn. Industries belongs to manufacturing is known as Manufacturing industries.

• A country’s economic strength and development are often judged by how strong and developed its manufacturing industries are.
• There are three types of economic activities: Primary, Secondary and Tertiary.
• Primary Activities: Direct use of natural resources. Examples: Farming, Fishing, Mining, Forestry.
• Secondary Activities: Primary materials are converted into useful products. (Manufacturing industries).
• Tertiary Activities: Provides services instead of goods. Examples: Transport, Selling goods, Advertising.

Importance of Manufacturing

1. Backbone of Economic Development: Manufacturing help in modernising agriculture. It reduces dependency on agriculutre by creating jobs in secondary and tertiary sectors.
2. Employment and Povery Reduction: Industrial development provides employment even in tribal and backward areas. It reduces poverty by providing employment.
3. Boosts Trade and Foreign Exchange: Export of Manufacturing goods expands trade and commerce. Export also brings in foreign exchange.
4. Path to Economic Prosperity: Raw materials have less value on their own. Manufacturing adds vaules to these raw materials. Diversified manufacturing (Different factories, industries and skilled labour), generate higher income, higher employment, higher development. So, India’s prosperity depends on how fast and how broadly it can expand manufacturing.
5. Make India Competitive in Global Market: High quality manufacturing industries enables India to produce goods that meet international standards. It increases country’s global competitiveness and strengthens India’s economic position.

Classification of Manufacturing Industries

A. On the Basis of Source of Raw Materials Used

1. Agro-Based Industries: Use raw materials from agriculture. Examples: Textile (Cotton, Woollen, Jute, Silk), Rubber, Sugar, Tea-Coffee, Edible oil etc.
2. Mineral Based Industries: Use raw materials from mining. Examples: Iron and Steel, Cement, Aluminium, Machine Tools, Petrochemicals etc.

B. On the Basis of Their Main Role

1. Basic or Key Industries: Provide raw materials or machinery for other industries. Examples: Iron and Steel, Copper Smelting, Aluminium Smelting etc.
2. Consumer Industries: Produce goods for direct use by consumers. Examples: Sugar, toothpaste, paper, fans, sewing machines etc.

C. On the Basis of Capital Investment

1. Small Scale Industries: Capital Investment is less than 1 crore. Examples: Toys, Handicrafts etc.
2. Large Scale Industries: Capital Investment is more than 1 crore. Examples: Automobile, Cement etc.

D. On the Basis of Ownership

1. Public Sector Industries: Industries owned and operated by the government agenecies. Examples: BHEL (Bharat Heavy Electricals Limited), SAIL (Steel Authority of India Limited).
2. Private Sector Industries: Owned and operated by individuals or groups of individuals. Examples: Dabur, TISCO (Tata Iron and Steel Company), Bajaj Auto etc.
3. Joint Sector Industries: Jointley owned and operated by government and private individuals or groups. Examples: Oil India Limited (OIL).
4. Cooperative Sector Industries: Owned and operated by producers, raw material supplier or workers or both. Members pool their resources and share profits or losses according to their share.

E. On the Basis of Bulk and Weight of Raw Material and Finished Good:

1. Heavy Industries: Use heavy raw materials and produce heavy goods. Example: Iron and Steel.
2. Light Industries: Use light raw materials and produce light goods. Example: Electrical goods industry.

Agro-Based Industries

Manufacturing industries which used raw material from agriculture.

1. Textile Industries

• The textile industry hold a unique and vital position in the Indian economy.
• It significantly contributes to:
  • Industrial production and Employment generation
  • Foreign exchange earnings
• It is the only industry in India that is self-reliant and complete in value chain (Raw material to finished good).
• It means the textile industry has all the steps of production within the country itself. Nothing needs to be imported to complete the process.

2. Cotton Textiles

• Ancient India: Cotton textile made using hand spining and handloom weaving.
• 18^th century: Power-looms introduced.
• Colonial Period: Indian textile declined due to competition from British mill-made cloth.
• Early cotton industrial concentration: In Maharashtra and Gujrat.
• Reason of this localization: Raw cotton, market, transportation with port facilities, labour, moist climate in these area.
• Spinning (Making Yarn): Centralized in Maharashtra, Gujrat, Tamil Nadu.
• Weaving (Making Fabric): Highly Decentralized. It is done in small units across the country to preserve traditional Indian skills and design in cotton, silk, zari, embroidery etc.
• India is world class in spinning but weak in weaving quality.
• Weaving supplies low quality of fabric as it can’t use high quality yarn due to low-tech methods.
• Weaving is done by handloom, powerloom and in mills.
• The Handspun khadi gives work to many weavers. They make it at home as part of a small-scale industry (Cottage Industry).

3. Jute Textile

• India is the largest producer of raw jute and jute products in the world. But in export, India is second, after Bangladesh.
• Most Jute mills are in West Bengal, especially along the Hugli River. Reasons are:
  • It  is located near the jute producing area.
  • Cheap water transport via river. Good transport network of railway, roadways and waterways. It make easy to bring raw jute to the mills.
  • There is plenty of water available for jute processing.
  • Kolkata city provides Banking, Insurance and Port facilities for exporting goods.

4. Sugar Industry

• India is second largest producer of sugar in the world. But it is number one in making gur and khandsari.
• The main raw material is sugarcane, which is bulky and heavy. During transportation over long distances, it loses sucrose content. So, the mills are set up near sugarcane farms.
• 60% of mills are in Uttar Pradesh and Bihar. Other states are Maharashtra, Karnataka, Tamil Nadu, AP, Gujrat, Punjab, Haryana, MP.    
• It is seasonal Industry and ideally suited to the cooperative sector.

Question: When and where was the first successful textile mill established in India?
Answer: The first successful textile mill in India was established in Mumbai in 1854.

Question: Why are sugar mills shifting to southern and western states (like Maharashtra)?Answer: Sugar mills are shifting to southern and western states (like Maharashtra). Reasons are:

1. Higher sucrose content in the sugarcane grown here (More sugar output).
2. Cooler climate prevents fermentation. So, longer crushing season.
3. The cooperatives are more successful.

Question: Where and when was the first jute mill established in India?
Answer: The first jute mill in India was set up at Rishra, near Kolkata, in 1855.

Mineral Based Industries

Manufacturing Industries that use mineral and metals as raw material are called mineral based industries.

1. Iron and Steel Industry

• Iron and steel industry is called a basic industry because all other industries (Heavy, medium or light) need machines, tools and structures made of steel.
• Steel is used to make engineering goods, construction materials, defense, medical, telephonic, scientific equipment and everyday consumer goods.
• A country’s steel production and use is a sign of how developed it is.
• Iron and Steel industry is a heavy because:
  • It uses heavy raw materials.
  • Produces heavy finished goods.
  • Needs high transportation costs.
• Raw materials used in Steel making:
  • Iron ore, coking coal, and limestone are needed in the ratio 4:2:1.
  • Manganese is also used to make the steel strong and hard.
• Chhotanagpur Plateau ideal for iron and steel industry. Because it has:
  • Abundant iron ore and coal are nearby.
  • Cheap labour
  • Good transport
  • Growing market
  • Low cost of raw materials.

2. Aluminium Smelting

• Aluminium smelting is the second most important metallurgical industry in India (After iron and steel).
• Aluminium is a light, resistant to corrosion, a good conductor of heat, malleable and becomes strong when it is mixed with other metals.
• Uses of Aluminium: It is used to manufacture aircraft, utensils and wires. It is used as substitute for steel, copper, zinc and lead in many industries.
• Location of Aluminium smelting plants: Odisha, West Bengal, Kerala, Uttar Pradesh, Chhattisgarh, Maharashtra, and Tamil Nadu.

Note: 4 to 6 tons of bauxite produce 2 tons of alumina, which in turn gives 1 ton of aluminium.

3. Chemical Industry

• One of the fastest growing and diversifying manufacturing industries in India.
• Includes both large-scale and small-scale units.
• Rapid growth has been recorded in both inorganic and organic sectors.
• Inorganic chemicals: Sulphuric acid, Nitric acid, Alkalies, Soda ash and Caustic soda.
  • Sulphuric acid is used in fertilizer, synthetic fibers, plastics, adhesives, paints, dyes etc.
  • Soda ash is used in glass, soaps and detergents, and paper.
• Organic chemicals: Petrochemicals. It is used in formation of Synthetic fibers, Synthetic rubber, Plastic, Dyestuffs, Drugs and pharmaceuticals. Plants are located near oil refineries or petrochemical plants.  
• The chemical industry is its own biggest consumer.
• Basic chemicals are further processed to:
  • Create new industrial chemicals.
  • Produce items for agriculture.
  • Make consumer goods.
• List of Common Chemical Industry Products: Fertilizers, Synthetic fibers, Plastic, Soap, Detergents, Paints, Medicines, Cosmetics, Paper, Glass and Adhesives.

Questions: Inorganic industries are widely spread across the country. Why?
Answer: Inorganic industries are widely spread across the country, because:

1. Raw materials are easily available in different regions.
2. Demand for these products is high across India.
3. Not dependent on oil refineries (Unlike organic chemicals).

4. Fertilizer Industry

• The fertilizer industry mainly produces:
  • Nitrogenous fertilizer (urea)
  • Phosphatic fertilizers
  • Ammonium phosphate (DAP – Di Ammonium Phosphate)
  • Complex fertilizers (Containing of N, P and K).
• Potash is fully imported, as India has no commercial reserves of potash or potassium compounds.
• After the Green Revolution, the fertilizer industry spread across the country.
• Major producers (50% production): Gujrat, Tamil Nadu, Uttar Pradesh, Punjab, Kerala.  

5. Cement Industry

• Essential for construction of Houses, factories, bridges, roads, airports, dams, and commercial buildings.
• Raw material required: Limestone (Main raw material), Silica, Gypsum.
• Coal and electric power (For processing).
• Rail transport is needed to move heavy raw materials and finished products.
• Cement industry or factories are set up in Gujarat because it is easy to send cement to Gulf countries from there.
• The first cement plant was set up in Chennai in 1904. After Independence the industry expanded across the country.

6. Automobile Industry

• Automobiles are used for quick transport of goods, services and people.
• India manufactures: Trucks, buses, cars, motorcycles, scooters, Three-wheelers and multi utility vehicles.
• After liberalization (1991), foreign companies entered the Indian market with modern vehicles. This increased the demand for new model and rapid growth in automobile sectors. Mainly in Passenger cars, two-wheelers and three-wheelers.
• Major Centers: Delhi, Gurugram, Mumbai, Pune, Chennai, Kolkata, Lucknow, Indore, Hyderabad, Jamshedpur and Bengaluru.

7. Information Technology and Electronics Industry

• The electronics industry makes a wide range of products like transistor TVs, Telephones, Mobile phones, telephone exchange, radar and computers. These are all important for communication and technology.
• Bengaluru is called the “Electronic Capital of India”. Other important cities: Mumbai, Delhi, Hyderabad, Pune, Chennai, Kolkata, Lucknow, Coimbatore and Nodia.
• Major impact of this industry: Employment Generation.
• Key factor of success of IT industry: Continuous growth in hardware and software.

Industrial Pollution and Environmental Degradation

Manufacturing Industries help in economic grwoth, but they also cause pollution and harm the environment. These are 4 main types of pollution caused by industries: Air, Water, Land and Noise Pollution.

1. Air Pollution

• Air pollution happens when there is a high amount of harmful gases like sulphur dioxide and carbon monoxide and particulate matter in air.
• Particulate matter:
  • Solid particles are like dust.
  • Liquid particles are like mist or spray.
• Source of Air pollution:
  • Chemical and paper factories.
  • Brick kilns
  • Refineries and smelting plants
  • Factories burning fossil fuels without following pollution rules.
• Harmful Effects of Air Pollution
  • Harms human health (Cause breathing problems, disease)
  • Affects animals, plants and buildings.
  • Pollutes the atmosphere.
  • Sometimes, toxic gas leaks (Bhopal Gas Tragedy) can be dangerous with long term effects.

2. Water Pollution

• Water pollution happens when industrial waste dumped into rivers and ponds.
• Industries Causing Water Pollution
  • Paper and pulp industries
  • Chemical factories
  • Textile and dyeing units
  • Petroleum refineries
  • Tanneries (leather factories)
  • Electroplating industries.
• Industrial waste from these waste
  • Dyes and detergents
  • Acids and salts
  • Heavy metals like lead and mercury
  • Pesticides and fertilizers
  • Synthetic chemicals, carbon compounds
  • Plastics and rubber
  • Solid waste pollutants: Fly ash, Phospho-gypsum, Iron and steel slags.
  • Thermal pollutant: Hot water from factories.
  • Nuclear waste from nuclear power plants.

Question: What is Thermal Pollution?
Answer: Thermal pollution is the increase in water temperature when hot water from factories or power plants is released into rivers, lakes or ponds without cooling. It reduces O₂ in water and harms aquatic life.

Question: Write about the harmful effect of nuclear waste.
Answer: Waste from nuclear power plants and nuclear weapon production industry is nuclear waste. It cause cancers, birth defects and miscarriages.

3. Soil Pollution (Land Pollution)

• When waste materials like glass, harmful chemicals, industrial waste, plastic packaging, salts and garbage are dumped on land, they pollute the soil.
• Effects on Soil: The soil becomes useless for farming or plant growth. It loses its fertility and structure. Rainwater seeps into the soil, this carries the harmful chemicals deeper, polluting the groundwater too.

4. Noise Pollution

• Noise pollution is caused by loud and unwanted sounds.
• Main Sources of Noise Pollution:
  • Industrial activities
  • Construction work
  • Factory machines and equipment
  • Generators
  • Saws and drills (both pneumatic and electric).
• Effects of Noise Pollution:
  • Hearing problems (hearing loss).
  • Increased heart rate
  • High blood pressure
  • Stress and irritation.

Control of Environmental Degradation

A. Reduce Water Pollution

• Reuse and recycle water.
• Harvest rainwater.
• Water treatment before releasing it into rivers. Phases are:
  • Primary Treatment: Physical or mechanical treatment. This involves filtration and sedimentation.
  • Secondary Treatment: Biological Treatment. Use microbes to reduce dissolved and suspended organic waste.
  • Tertiary Treatment: Biological, chemical and physical Treatment. This removes remaining pollutants and recycles water.  

B. Reduce Air Pollution

• Use smoke stacks with filters like:
  • Electrostatic precipitation
  • Fabric filters
  • Scrubbers
  • Inertial separators.
• Use gas or oil instead of coal in factories.

C. Reduce Noise Pollution

• Fit silencers in machines and generators.
• Use noise-absorbing materials.
• Redesign machines to be energy efficient and less noisy.
• Use earplugs or earphones by workers for personal safety.

Manufacturing Industries – CBSE PYQ

Manufacturing Industries – RBSE PYQ

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