Industries
Welcome to HSLC Guru. In this lesson we explore Class 8 Social Science Geography Chapter 5 — Industries — strictly aligned with the ASSEB (Assam State School Education Board) syllabus. You will find a clear summary of the chapter, complete textbook question answers, additional practice MCQs, fill in the blanks, true or false items, and a glossary table. The notes are written in simple English so that students of Assam can revise quickly and score full marks.
Summary of the Chapter
An industry refers to an economic activity concerned with the production of goods, extraction of minerals or the provision of services. Industries are broadly classified on the basis of raw materials (agro based, mineral based, marine based and forest based), on the basis of size (cottage or household, small scale and large scale), and on the basis of ownership (private sector, public sector, joint sector and cooperative sector). Cottage industries use little capital and simple tools, while large scale industries employ heavy machinery and a large workforce. Together they form the backbone of a modern economy.
The location of an industry is influenced by several geographical and economic factors. The most important are availability of raw materials, suitable land, sufficient water, cheap and skilled labour, regular supply of power, adequate capital, efficient transport network and a ready market. Government policies, banking and insurance facilities also matter. When most of these factors are present in one place, an industrial centre develops, which in turn attracts more industries and gives birth to a major industrial region.
The chapter discusses three major industries. The iron and steel industry is a basic industry because almost every other industry depends on it; Jamshedpur in Jharkhand and Pittsburgh in the USA are leading centres. The cotton textile industry is one of the oldest industries; Mumbai and Ahmedabad in India and Osaka in Japan are famous cotton textile cities. The information technology (IT) industry deals with the storage, processing and distribution of information; Bangalore is called the Silicon Valley of India, while Silicon Valley in California, USA, is the world centre of IT. Every industry works as a system with three parts — inputs (raw materials, labour, land, capital), processes (manufacturing activities) and outputs (finished goods and income).
The world has several major industrial regions such as eastern North America, western and central Europe, eastern Europe, eastern Asia (Japan, China, South Korea) and parts of India. While industrialisation brings employment, wealth and modern goods, it also causes serious environmental problems — air, water, land and noise pollution, deforestation and global warming. The Bhopal Gas Tragedy of 1984, in which methyl isocyanate (MIC) gas leaked from the Union Carbide factory and killed thousands of people, is a tragic reminder of the need for safety standards, eco-friendly technology and strict pollution control.
Textbook Question and Answers
A. Very Short Answer Type Questions (1 Mark)
Q1. What is an industry?
Answer: An industry is an economic activity concerned with the production of goods, extraction of minerals or the provision of services.
Q2. Name two agro-based industries.
Answer: Cotton textile industry and sugar industry are two agro-based industries.
Q3. Which city is known as the Silicon Valley of India?
Answer: Bangalore (Bengaluru) is known as the Silicon Valley of India.
Q4. Name the gas that leaked in the Bhopal gas tragedy.
Answer: Methyl Isocyanate (MIC) gas leaked in the Bhopal gas tragedy of 1984.
Q5. Mention one mineral-based industry.
Answer: The iron and steel industry is a mineral-based industry.
Q6. Where is the famous cotton textile city of Japan located?
Answer: Osaka, situated on the island of Honshu in Japan, is a famous cotton textile city often called the Manchester of Japan.
Q7. What is meant by a cottage industry?
Answer: A cottage industry is a small industry carried on at home by the members of a family using simple tools and a little capital.
Q8. Name two industrial regions of India.
Answer: The Mumbai–Pune industrial region and the Chhotanagpur industrial region are two important industrial regions of India.
Q9. Where is Pittsburgh located?
Answer: Pittsburgh is located in the state of Pennsylvania in the United States of America (USA).
Q10. Name the three parts of an industrial system.
Answer: The three parts of an industrial system are inputs, processes and outputs.
B. Short Answer Type Questions (2–3 Marks)
Q1. Classify industries on the basis of raw materials.
Answer: On the basis of raw materials, industries are classified into four types:
- Agro-based industries: use plant and animal products as raw materials, e.g., cotton textile, sugar, jute and dairy.
- Mineral-based industries: use minerals, e.g., iron and steel, cement and aluminium.
- Marine-based industries: use products from the sea, e.g., fish oil and sea food processing.
- Forest-based industries: use forest produce, e.g., paper, lac and furniture industries.
Q2. Why is the iron and steel industry called a basic industry?
Answer: The iron and steel industry is called a basic industry because steel produced by it is used as a raw material in almost every other industry, such as machine tools, automobiles, ships, railways, defence equipment and construction. Without steel no modern industry can run, so it forms the base of industrial development.
Q3. Distinguish between small scale and large scale industries.
Answer:
- Small scale industries use less capital, simpler machines and a smaller number of workers, e.g., handloom, basket making and pottery.
- Large scale industries use heavy machinery, huge capital and thousands of workers, e.g., iron and steel and automobile industries.
Q4. What are the major factors that affect the location of an industry?
Answer: The major factors that affect the location of an industry are availability of raw materials, suitable land, plenty of water, cheap and skilled labour, regular supply of power, sufficient capital, efficient transport and communication, and a good market. Favourable government policy and banking facilities also help in the growth of an industry.
Q5. Why is Bangalore called the Silicon Valley of India?
Answer: Bangalore is called the Silicon Valley of India because it has a very large concentration of information technology (IT) and electronic industries. It has a pleasant climate, well-educated workforce, many engineering colleges, good infrastructure and the headquarters of leading software companies, just like the original Silicon Valley in California, USA.
Q6. Mention any three impacts of industrialisation on the environment.
Answer: Three impacts of industrialisation on the environment are:
- Air pollution caused by smoke and harmful gases released from factories.
- Water pollution caused by industrial waste being thrown into rivers and lakes.
- Land degradation and noise pollution caused by mining, dumping of waste and running of heavy machines.
C. Long Answer Type Questions (5–6 Marks)
Q1. Explain the classification of industries on the basis of size and ownership.
Answer: Industries are classified in different ways. On the basis of size, that is, the amount of capital invested and the number of workers employed, industries are of three types:
- Cottage or household industries: run by family members at home with very little capital and simple tools, e.g., handloom weaving, pottery and basket making.
- Small scale industries: use a small amount of capital and machines, e.g., silk weaving and food processing.
- Large scale industries: use huge capital, modern machines and thousands of workers, e.g., iron and steel, shipbuilding and automobile industries.
On the basis of ownership, industries are of four types:
- Private sector industries: owned and run by individuals or private companies, e.g., Tata Iron and Steel Company.
- Public sector industries: owned and managed by the government, e.g., Bhilai Steel Plant.
- Joint sector industries: owned jointly by the government and private companies, e.g., Maruti Udyog Ltd.
- Cooperative sector industries: owned by the producers of raw materials or workers, e.g., Anand Milk Union (Amul) and many sugar cooperatives in Maharashtra.
Q2. Discuss the iron and steel industry with special reference to Jamshedpur and Pittsburgh.
Answer: The iron and steel industry is the most important basic industry as it supplies steel to all other industries. It uses iron ore, coal, limestone and manganese as raw materials.
Jamshedpur is situated in Jharkhand, India, on the Subarnarekha River. The Tata Iron and Steel Company (TISCO) was set up here in 1907. Jamshedpur is favourably located because iron ore is available from Singhbhum, coal from Jharia and Raniganj, limestone and manganese from nearby areas. The Subarnarekha River supplies water, the Kolkata port is close, and there is good railway connectivity. Cheap labour and a wide market make it the leading steel city of India.
Pittsburgh is situated in Pennsylvania, USA, where the Allegheny and Monongahela rivers join to form the Ohio river. It became the steel capital of the USA because of nearby coalfields of the Appalachian region, iron ore from the Great Lakes (especially Lake Superior) brought through cheap water transport, plenty of water, dense railway network and a huge market in the USA. Today, much of the actual steel making has shifted, but Pittsburgh still remains a major centre of research, finance and steel-using industries.
Q3. Describe the cotton textile industry of India and Japan.
Answer: The cotton textile industry is one of the oldest and most important agro-based industries of the world. It uses raw cotton as the main raw material and produces yarn and cloth.
In India, Mumbai in Maharashtra is called the Cottonopolis of India. It grew because of the black cotton soil of the Deccan plateau, the warm and moist climate, port facilities, capital from Indian merchants, cheap labour and good transport. Ahmedabad in Gujarat is another big centre, often called the Manchester of India, due to its location in the cotton-growing region, cheap labour and good rail and road links. Coimbatore, Kanpur and Surat are other important cotton textile centres.
In Japan, Osaka on Honshu Island is the leading cotton textile centre and is called the Manchester of Japan. Although Japan does not produce cotton, it imports raw cotton mainly from India, Egypt and the USA. Osaka has a humid climate, plenty of water from the Yodo River, cheap labour, an excellent port and a huge home and foreign market. Modern Japanese cotton mills are highly mechanised and produce fine cotton goods.
Q4. Write a note on the information technology (IT) industry with special reference to Bangalore and Silicon Valley.
Answer: The information technology industry deals with the storage, processing and transmission of information through computers and the internet. It includes software development, hardware manufacturing and IT-enabled services such as call centres and BPOs. Unlike traditional industries, the IT industry depends mostly on a highly educated workforce and modern communication, not on heavy raw materials.
Bangalore in Karnataka is the largest IT centre of India, often called the Silicon Valley of India. It has a pleasant climate, many engineering and technical colleges, a large pool of skilled English-speaking workers, modern airport, broadband connectivity and the headquarters of major Indian companies like Infosys and Wipro, along with branches of multinational firms.
Silicon Valley is located in the Santa Clara Valley of California, USA, near San Francisco. It is the world’s leading IT region. The presence of Stanford University, world-class research, venture capital, mild climate and a culture of innovation made it the home of giant companies like Apple, Google, Intel, HP and Facebook (Meta). Both Bangalore and Silicon Valley show that the IT industry grows where talent, knowledge and good infrastructure meet.
Q5. Describe industrialisation and its impact on the environment with reference to the Bhopal Gas Tragedy.
Answer: Industrialisation means the rapid growth of industries in a country. It increases production, creates jobs, raises income and improves the standard of living. However, uncontrolled industrialisation harms the environment in several ways:
- Air pollution from smoke, dust and harmful gases released by factories and thermal power stations.
- Water pollution caused by chemical effluents flowing into rivers, lakes and seas.
- Land pollution due to dumping of solid and toxic waste.
- Noise pollution from heavy machinery and continuous traffic.
- Deforestation, global warming and acid rain caused by burning of fossil fuels.
The Bhopal Gas Tragedy of 2–3 December 1984 is the worst industrial disaster in history. Methyl Isocyanate (MIC), a highly poisonous gas, leaked from the Union Carbide pesticide factory in Bhopal, the capital of Madhya Pradesh. Thousands of people died within hours, and lakhs suffered from blindness, breathing problems and other diseases. Even today, the people of Bhopal are facing the after-effects. The tragedy taught the world the importance of strict safety measures, eco-friendly technology, regular inspection of factories and respect for human life and the environment during industrial growth.
Additional Multiple Choice Questions (MCQs)
Q1. The sugar industry is an example of —
(a) Mineral-based industry (b) Agro-based industry (c) Forest-based industry (d) Marine-based industry
Answer: (b) Agro-based industry.
Q2. Pittsburgh is famous for the —
(a) Cotton textile industry (b) IT industry (c) Iron and steel industry (d) Sugar industry
Answer: (c) Iron and steel industry.
Q3. Osaka is located in —
(a) China (b) Japan (c) South Korea (d) USA
Answer: (b) Japan.
Q4. The Silicon Valley of the world is in —
(a) New York, USA (b) California, USA (c) Texas, USA (d) Florida, USA
Answer: (b) California, USA.
Q5. Tata Iron and Steel Company (TISCO) was established at Jamshedpur in the year —
(a) 1857 (b) 1907 (c) 1947 (d) 1957
Answer: (b) 1907.
Q6. The Bhopal gas tragedy occurred in —
(a) 1974 (b) 1984 (c) 1994 (d) 2004
Answer: (b) 1984.
Q7. Which of the following is a public sector industry?
(a) TISCO (b) Bhilai Steel Plant (c) Reliance Industries (d) Amul
Answer: (b) Bhilai Steel Plant.
Q8. Amul, the milk cooperative, is located mainly in —
(a) Punjab (b) Maharashtra (c) Gujarat (d) Karnataka
Answer: (c) Gujarat.
Q9. The Manchester of India is —
(a) Mumbai (b) Ahmedabad (c) Kanpur (d) Surat
Answer: (b) Ahmedabad.
Q10. Which of the following is NOT a factor in industrial location?
(a) Raw material (b) Labour (c) Religion (d) Transport
Answer: (c) Religion.
Fill in the Blanks
Q1. The iron and steel industry is a __________ based industry.
Answer: mineral.
Q2. Bangalore is known as the __________ of India.
Answer: Silicon Valley.
Q3. Mumbai is called the __________ of India in the cotton textile industry.
Answer: Cottonopolis.
Q4. The gas that leaked in Bhopal in 1984 was __________.
Answer: Methyl Isocyanate (MIC).
Q5. An industrial system has three parts — inputs, processes and __________.
Answer: outputs.
True or False
Q1. Cotton textile is a mineral-based industry.
Answer: False. Cotton textile is an agro-based industry.
Q2. Jamshedpur is located on the bank of the Subarnarekha River.
Answer: True.
Q3. The Bhilai Steel Plant is in the private sector.
Answer: False. It is a public sector industry owned by the Government of India.
Q4. Silicon Valley is in California, USA.
Answer: True.
Q5. Industrialisation has no effect on the environment.
Answer: False. Industrialisation causes air, water, land and noise pollution and other environmental problems.
Glossary
| Term | Meaning |
|---|---|
| Industry | An economic activity concerned with the production of goods, extraction of minerals or the provision of services. |
| Agro-based industry | An industry that uses plant and animal products as raw materials, e.g., cotton textile and sugar. |
| Mineral-based industry | An industry that uses minerals as raw materials, e.g., iron and steel. |
| Cottage industry | A small home-based industry run by family members with simple tools. |
| Large scale industry | An industry with huge capital, modern machines and many workers. |
| Public sector | Industries owned and managed by the government. |
| Private sector | Industries owned and run by individuals or private companies. |
| Joint sector | Industries owned jointly by the government and private companies. |
| Cooperative sector | Industries owned by the producers of raw materials or workers themselves. |
| Inputs | Raw materials, labour, land, capital and power used by an industry. |
| Processes | Manufacturing activities that change inputs into finished goods. |
| Outputs | Finished goods, services and income produced by the industry. |
| Industrial region | An area where many industries are concentrated, e.g., Mumbai–Pune region. |
| Silicon Valley | The world centre of the IT industry located in California, USA. |
| Bhopal Gas Tragedy | The 1984 industrial disaster in Bhopal caused by leakage of MIC gas from the Union Carbide factory. |