Previous Year Questions: Manufacturing Industries

Ans: Industries are one of the main causes of air pollution. Many factories release harmful gases and smoke into the air. The presence of gases like sulphur dioxide and carbon monoxide makes the air impure and dangerous for living beings. Smoke from chemical and paper factories, brick kilns, refineries, and smelting plants, as well as from the burning of fossil fuels in factories, adds to the problem. These industries also release tiny solid and liquid particles such as dust, sprays, mist, and smoke into the atmosphere. This polluted air affects human health, damages plants and buildings, and harms the environment as a whole.

To reduce air pollution caused by industries, the following measures can be taken:

• Install smoke stacks with devices such as electrostatic precipitators, fabric filters, scrubbers, and inertial separators to trap dust and harmful particles before releasing gases into the air.
• Use cleaner fuels like oil or gas instead of coal in factories to reduce smoke and soot.
• Plant green belts around industrial areas to absorb pollutants and maintain clean air.

By adopting these steps, industries can help reduce air pollution and protect the environment.

Ans: 

Role of industries in increasing water pollution:

• Industries release organic and inorganic wastes such as dyes, detergents, acids, salts, and heavy metals like lead and mercury into rivers and ponds.
• Paper, pulp, chemical, textile, dyeing, petroleum refineries, tanneries, and electroplating industries are the main sources of water pollution.
• These pollutants make water unsafe for drinking and harmful to aquatic life.
• Thermal power plants discharge hot water into rivers and ponds without cooling, causing thermal pollution, which affects aquatic organisms.
• Soil and water pollution are closely related, as rainwater carries pollutants from the soil into groundwater.

Measures to reduce water pollution:

• Treat industrial effluents before releasing them into water bodies through primary, secondary, and tertiary treatment.
• Reuse and recycle water in different stages of production to minimise wastage.
• Harvest rainwater to meet water needs and reduce dependence on polluted or underground sources.

By applying these measures, industries can help reduce water pollution and protect the environment.

Ans: Manufacturing industries are known as the backbone of economic development because they play a key role in the progress of a country.

• Manufacturing industries help in modernising agriculture, which is the main occupation in India. They produce machines, irrigation pumps, fertilisers, pesticides, and tools that increase agricultural productivity and make farming more efficient.
• These industries reduce dependence on agriculture by providing employment to many people in factories and service-related sectors. This helps in reducing unemployment and poverty in the country.
• The growth of industries helps to reduce regional disparities by setting up factories in tribal and backward areas, thus promoting balanced regional development.
• By exporting manufactured goods, the country earns valuable foreign exchange which strengthens trade and commerce.
• Countries that convert their raw materials into a wide range of finished goods become more prosperous because finished products have higher value.

Therefore, manufacturing industries are essential for India's growth as they support agriculture, create jobs, promote balanced development, and make the country economically strong.

Ans: Agriculture and industries complement each other by providing raw materials, markets, employment, and supporting economic development.

• Raw Materials for Industries: Agriculture supplies raw materials like cotton, jute, and sugarcane to industries such as textiles, jute, and sugar, as emphasized in the chapter.

• Market for Industrial Goods: Agricultural communities create demand for industrial products like fertilizers, pesticides, and machinery, boosting industrial growth.

• Employment Opportunities: Both sectors generate jobs; agriculture supports rural livelihoods, while agro-based industries (e.g., food processing) employ both rural and urban workers.

• Economic Development: The interdependence of agriculture and industry drives economic growth by ensuring a steady supply of raw materials and markets, as discussed in the chapter.

Ans: The National Thermal Power Corporation (NTPC) has taken several important steps to prevent environmental degradation while generating power. It has also received ISO certification for Environment Management System (EMS 14001) for its efforts.

1. NTPC follows a proactive approach to preserve natural resources such as water, oil, gas, and fuel in the areas where its power plants are located.
2. It ensures the optimum use of equipment by adopting the latest technology and upgrading existing machinery to improve efficiency and reduce pollution.
3. The corporation focuses on minimising waste generation and promotes maximum utilisation of ash produced in thermal power plants.
4. NTPC has developed green belts around its plants to maintain ecological balance and support afforestation.
5. It also works to reduce environmental pollution through ash pond management, ash water recycling systems, and liquid waste management.
6. NTPC conducts ecological monitoring and maintains an online database for all its power stations to ensure environmental standards are met.

Through these measures, NTPC has set an example of how industrial growth can be achieved along with environmental protection.

Ans: The manufacturing industry plays a very important role in the growth and development of the Indian economy. It is considered the backbone of economic progress because of the following reasons:

• Modernises agriculture: The manufacturing sector supports agriculture by producing machines, fertilisers, pesticides, irrigation pumps, and other tools that help farmers increase productivity and make farming more efficient.
• Reduces dependence on agriculture: It provides jobs to a large number of people in the secondary and tertiary sectors, thus reducing the heavy dependence on agricultural income and helping to remove unemployment and poverty.
• Promotes regional development: By setting up industries in tribal and backward areas, it helps reduce regional disparities and promotes balanced regional growth across the country.
• Boosts foreign trade: The export of manufactured goods expands trade and brings in valuable foreign exchange, strengthening the country's position in global markets.
• Adds value to raw materials: Manufacturing converts raw materials into finished goods of higher value, which increases national income and prosperity.

Hence, the manufacturing industry is vital for India's progress as it supports agriculture, creates employment, promotes regional balance, enhances exports, and strengthens the overall economy.

Ans: How industries increase thermal pollution:

• Industries and thermal power plants often release hot water into rivers, ponds, and lakes without cooling it first.
• This increases the temperature of water bodies, reducing the amount of dissolved oxygen in the water.
• As a result, aquatic life such as fish and plants are harmed or even destroyed due to sudden temperature changes.
• Continuous discharge of hot water disturbs the natural balance of aquatic ecosystems.

Measures to reduce thermal pollution:

• Cool hot water before discharge - Industries should cool or treat hot water before releasing it into water bodies.
• Reuse and recycle water - Water should be reused in different stages of industrial processes to reduce the amount of heated water being released.
• Use modern and efficient equipment - Adopting advanced technologies and energy-efficient machinery can help reduce the generation of excess heat.

By following these measures, industries can significantly reduce thermal pollution and protect aquatic ecosystems.

Ans: (b) Both (A) and (R) are true, but (R) is not the correct explanation of (A).

It is true that most of the jute industry in India is located along the banks of the Hugli river in West Bengal. This is because of the availability of raw jute, cheap labour, water transport, rail and road connectivity, and abundant water for processing.
It is also true that India is the second largest exporter of jute, but this is not the reason for the industry's location along the Hugli river.

Leading state in production of Jute: West Bengal

• The chapter highlights that West Bengal is the leading state in jute production and jute-based industries, particularly due to its proximity to jute-growing areas and the availability of water for processing. Kolkata and its surrounding areas host major jute mills.

Atomic Power Plant located in Gujarat: Kakrapar

• The Kakrapar Atomic Power Station is a well-known nuclear power plant in Gujarat, located near Surat.

Iron and Steel Plant located in Jharkhand: Bokaro

•  The chapter specifically mentions the Bokaro Steel Plant in Jharkhand as a major iron and steel plant, part of the Steel Authority of India Limited (SAIL), located in the Chhota Nagpur plateau region, rich in mineral resources.

Sri Guru Ram Das Jee International Airport

• Sri Guru Ram Das Jee International Airport (Amritsar) is the third-largest airport in Northern India.

Ans: 
(1) Products in the electronics sector range widely, from cell phones to televisions, and India's development in these products and services has been significantly shaped by the Information Technology (IT) and electronics industry.
(2) India's economy has changed and its GDP has increased dramatically as a result of the country's emergence as a major global center for IT, especially in cities like Bangalore, Hyderabad, and Pune.
(3) The IT industry has boosted India's reputation as a leading global technology destination and directly or indirectly generated millions of jobs. This growth was further accelerated by the "Make in India" initiative, which attracted foreign investments in the electronic sector and promoted domestic manufacturing.
(4) The rapidly expanding Business Process Outsourcing (BPO) sector in this industry has made it a significant source of foreign exchange earnings over the past two or three years.
(5) India's competitiveness in the international market has increased as a result of the growth of the information technology and electronics industry.

Ans: The textile industry holds a unique position in the Indian economy for several reasons:

• It is the only industry that is self-reliant and complete in the value chain, covering everything from raw materials to finished products.
• The industry generates demand for various sectors, including chemicals, dyes, packaging materials, and engineering.
• It significantly contributes to industrial production, employment, and foreign exchange earnings.

Overall, the textile industry is vital for the growth and sustainability of the Indian economy.

Ans: Three ways through which industrial pollution can be reduced are:

• Use of Efficient Machinery: Equipping machinery and generators with silencers to reduce noise pollution.
• Recycling Waste: Treat and recycle waste and effluents using biological and mechanical processes.
• Install Pollution Control Devices: Fit factories with smoke screens, electrostatic precipitators, and scrubbers to minimise emissions.

Ans: The agro-industries significantly enhance agriculture by boosting productivity. 
Here are some key points:

• Supply of Inputs: Agro-industries provide essential tools and materials like irrigation pumps, fertilisers, insecticides, and machinery, enabling farmers to increase food production.
• Transportation: These industries assist in transporting agricultural goods to markets and also consume these products.
• Job Creation: Manufacturing industries modernise agriculture and create jobs in secondary and tertiary sectors, reducing reliance on agricultural income.

Ans: The iron and steel industry is referred to as a basic industry because:

• It provides essential materials for various sectors.
• It is crucial for producing engineering goods.
• It supplies materials for construction, defence, and medical equipment.
• It supports the manufacturing of telephonic and scientific equipment.
• It is a key component in creating a wide range of consumer goods.

Overall, the production and consumption of steel reflect a country's development.

Ans: The cement industry is crucial for various reasons:

• Construction: It is vital for building homes, factories, bridges, and roads.
• Economic Growth: With rising government spending, this industry significantly contributes to development.
• Diverse Production: It produces various types of cement to meet different construction needs.

Ans: (i) NTPC is the major power providing corporation in India, which is expanded as National Thermal Power Corporation.
(ii) An ISO certification in India can be issued by a third party certification body that is accredited by ISO (International Organization for Standardization)
(iii) (a) Optimum utilisation of equipment adopting latest techniques and upgrading existing equipment,
(b) Minimising waste generation by maximising ash utilisation.
(c) Providing green belts for nurturing ecological balance and addressing the question of special purpose vehicles for afforestation.

Ans: Industrial pollution of fresh water can be reduced by taking the following measures: 
(1) Minimise the usage of water by reusing and recycling it through multiple successive stages. 
(2) Compulsory treatment of hot water and effluents before releasing them in rivers and ponds.

Ans: Industries can be classified based on the raw materials they use. 
The main categories are:

• Agro-Based Industries: These industries rely on agricultural products, such as textiles, sugar, and edible oils.
• Mineral-Based Industries: These industries use minerals and metals, including iron, steel, and cement.

Ans: 

The manufacturing sector is considered the backbone of economic development.

• Support for Agriculture: The manufacturing sector provides essential inputs for agriculture, such as tractors, harvesting machines, and fertilizers, which modernise farming practices.
• Employment Opportunities: Establishing industries in tribal and backward areas creates jobs, improving the economic status of local communities.
• Value Addition: The sector enhances employment by adding value to goods. For instance, countries like the USA export finished products rather than raw materials.
• Trade Expansion: Exporting manufactured goods boosts trade and generates foreign exchange, contributing to national prosperity.
• Interdependence: Agriculture and industry complement each other. Agro-industries rely on agricultural raw materials and provide products that enhance farming efficiency.

Ans: (b)
Bauxite is primarily used as a raw material in the production of aluminum through a process called smelting. It is rich in aluminum oxide, which is extracted to produce aluminum metal, making it essential for the aluminum industry. Other industries like cement and iron and steel do not use bauxite as their primary raw material.

Ans: Aluminium industry.

Ans: Cement industry.

Ans: Schemes for promoting khadi: Government should promote it by reducing cost of khadi.

Ans: When an industry discharges one litre of polluted water without any proper treatment, it can pollute at least eight times the quantity of freshwater. 
To reduce the pollution of water bodies the following action should be taken:
(i) Minimising water use for processing by reusing and recycling it in two or more successive stages.
(ii) Harvesting of rainwater to meet water requirements.
(iii) Treating hot water and other effluents before releasing them in water bodies.
(iv) Overdrawing of ground water reserves by industry or even for agricultural purposes need to be regulated and a viable solution needs to be implemented.

Ans: (b)
(a) BHEL (Bharat Heavy Electricals Limited): This is a public sector company owned by the Government of India.
(b) TISCO (Tata Iron and Steel Company, now Tata Steel): This is a private sector industry owned by the Tata Group.
(c) OIL (Oil India Limited): This is a public sector company.
(d) SAIL (Steel Authority of India Limited): This is also a public sector company.
Therefore, the correct answer is (b) TISCO, as it is a private sector industry.

Ans:

The iron and steel industry is concentrated in and around the Chota Nagpur Plateau due to several geographical and economic advantages:

1. Availability of Raw Materials: The region has abundant deposits of iron ore, coal, limestone and manganese which are essential for steel production.

2. Proximity of High-grade Raw Materials: These raw materials are located close to each other, reducing transportation costs.

3. Cheap and Skilled Labour: The area has a large supply of labour from nearby states.

4. Availability of Power and Water: Rivers such as the Damodar provide water, and nearby coalfields provide power for the industry.

5. Good Transport Facilities and Market: Rail and road networks connect the region with major markets and industrial centres.

Ans: Industries are responsible for environmental degradation in the following ways: 
(i) Many times pollution norms are not followed by the industries. The effluents are not treated before they discharge into air or water bodies. 
(ii) Toxic gas leaks can be very hazardous with long-term effects; as happened after the Bhopal Gas tragedy. Hence meticulous maintenance of equipment is necessary. 
(iii) Thermal pollution of water occurs when hot water from factories and thermal plants is drained into rivers and ponds before cooling; this greatly harms the aquatic plants and animals. 
(iv) They release toxic dyes, detergents, acids, salts and heavy metals like lead and mercury, various pesticides, fertilisers, synthetic chemicals, plastics and rubber etc., into the water bodies. 
(v) Mismanagement of wastes from nuclear power plants can cause cancers and birth defects.

Ans: The manufacturing sector is considered as the backbone of economic development of a country because: 
(1) The manufacturing sector provides employment to a large number of people in the industrial as well as service sectors. 
(2) It helps in increasing agricultural productivity by modernising agriculture. 
(3) It also helps in minimising regional disparities by setting up industries in tribal and backward areas of the country.

Ans: (1) On one hand, Industries lead to extensive growth and expansion, on the other hand, these are also the cause of environmental degeneration. 
(2) There is an urgent need or requirement to use a more sustainable model.
(3) Industries must produce eco-friendly products and dump wastes responsibly. 
(4) Use of latest technology can help industries to control pollution and lead towards sustainable mode of operation.
(5) If necessary, dump waste in specified places, away from the land and water sources. Before dumping, treat well and make useful for other than drinking purpose, stop using thermal plants in some of the locations.

Ans: The economic strength of a country is measured by the development of manufacturing industries because manufacturing plays a crucial role in the overall growth and development of an economy. Manufacturing industries contribute to several key aspects: 
1. Utilization of Natural Resources: The development of manufacturing industries allows for the efficient utilization of a country's natural resources, leading to increased production and economic growth. 
2. Balanced Sectoral Development: Manufacturing industries help achieve a balanced sectoral development by reducing the over-dependence on the agricultural sector. This diversification strengthens the economy and reduces vulnerability. 
3. Enhanced Capital Formation: The growth of manufacturing industries leads to an increase in investment and capital formation. This, in turn, boosts economic growth and development. 
4. Increase in National Income and Foreign Exchange: Manufacturing industries contribute significantly to the national income of a country. Additionally, export-oriented manufacturing sectors generate foreign exchange, which strengthens the overall economy. 
5. Job Creation: The development of manufacturing industries creates job opportunities for a large section of the population, thereby reducing unemployment and poverty.

Ans: The chemical industry plays a vital role in the Indian economy due to the following reasons: 
1. Contribution to GDP: The chemical industry is one of the fastest-growing sectors in India and contributes significantly to the country's Gross Domestic Product (GDP). It provides employment opportunities and generates income, contributing to economic growth. 
2. Export and Import: India ranks 9th in exports and 6th in imports of chemicals globally. The chemical industry contributes to foreign exchange earnings through exports of various chemical products. 
3. Diversification: The chemical industry in India is diversifying rapidly, with growth observed in both organic and inorganic sectors. It includes the production of petrochemicals, fertilizers, synthetic fibers, plastics, adhesives, and paints. This diversification strengthens the industrial base and promotes economic development. 
4. Value Addition: The chemical industry is a significant consumer of its own products. Value addition through various chemical processes adds to the overall economic output of the country. 
5. Employment Generation: The chemical industry provides direct and indirect employment opportunities to a large number of people. It supports various ancillary industries and contributes to job creation, reducing unemployment rates. 

Ans: The textile industry has a significant contribution to the Indian economy in the following ways: 
1. Industrial Production: The textile industry is one of the largest contributors to industrial production in India. It encompasses various stages of the textile value chain, including spinning, weaving, dyeing, printing, and garment manufacturing. 
2. Employment Generation: The textile industry is a labor-intensive sector and provides employment to a large number of people, particularly in rural areas. It contributes to income generation and poverty reduction. 
3. Export Earnings: The textile industry is a major earner of foreign exchange through exports. India is one of the largest exporters of textiles globally. The industry's export earnings help improve the country's balance of trade. 
4. Market Demand: In a developing country like India, the textile industry plays a crucial role in meeting the domestic demand for clothing and textiles. It caters to the diverse needs of the population, providing affordable and fashionable clothing options. 
5. Ancillary Industries: The textile industry supports various ancillary industries such as cotton farming, dyeing, printing, packaging, and garment accessories. These industries contribute to the overall growth and development of the economy.

Ans: The interdependence of agriculture and industries is based on many factors, such as adequate rainfall and good crops. Some examples are:
(i) When the rain fails and the crops fail, the industries suffer, and there are losses in businesses as the purchasing power falls.
(ii) If the cotton crops fail, the clothing industries suffer, and other industries also suffer.
(iii) If poultry farms do not produce enough eggs, the bakery industries that use eggs as their important ingredient also suffer.
(iv) Thus, the success and growth of agriculture are closely linked to the success and growth of industries.

Ans: Industrial units cause air pollution in the following ways: 
(1) Industries that ignore pollution norms cause air pollution. They release high proportions of gases. 
(2) Air borne particulate materials contain both solid and liquid particles, which get released into the atmosphere during production. 
(3) Smoke is emitted by chemical and paper factories, brick kilns, refineries and smelting plants and burning of fossil fuels belong to the major polluting industries.

Ans: On the basis of the sources of raw materials, industries are classified as:
(i) Agro-based Industries: These industries draw their raw materials from agricultural products. For example, textiles, sugar, coffee, tea, and edible oil.
(ii) Mineral-based Industries: These industries draw their raw materials from minerals. For example, iron and steel industries, cement, petrochemicals, etc.
While in agro-based industries, value addition is done at every stage; in the case of mineral-based industries, refining is a more important activity.

Ans: The textile industry is considered self-reliant because products produced at each stage are used as raw materials for the next stage of production. The value chain refers to a number of activities that the industry performs right from the production of raw materials to the delivery of finished products. The textile industry completes this value chain within the country itself, without relying on imports or outsourcing. This self-reliance helps the industry maintain control over quality, costs, and timelines.

Ans: Industries can be classified according to the role they play in the economy of the country. They are:
(i) Basic or Key Industries: These industries supply their products or raw materials to manufacture other goods. For example, iron and steel and copper smelting, aluminum smelting. These industries help in the establishment of other industries.
(ii) Consumer Industries: These industries produce goods for direct use by consumers. Examples include sugar, toothpaste, paper, sewing machines, electric fans, etc.
The main difference between these two types of industries lies in their target market and the purpose of their production.

Ans:
(i) Small Scale Industry: These industries employ fewer people and less capital. Most of the work is done by small machines and manpower. They use fewer raw materials and produce less. Examples include radio, TV making, agricultural implements, etc.
(ii) Large Scale Industry: These industries employ a large number of people and more capital. Work is done by large machines and manpower. They use a large amount of raw materials and produce more products. Examples include the textile industry, steel industry, etc.
The main difference between these two types of industries lies in their scale of operations, investment, and production capacity.

Ans: Three steps to minimize environmental degradation caused by industrial development in India are:
(i) Minimizing the use of water for processing by reusing and recycling it in two or more successive stages.
(ii) Harvesting rainwater to meet water requirements and reduce the strain on natural resources.
(iii) Treating hot water and effluents before releasing them into rivers and ponds to prevent water pollution.
(iv) Implementing measures to reduce air pollution, such as fitting smokestacks with electrostatic precipitators, fabric filters, scrubbers, and inertial separators.
(v) Encouraging the use of cleaner fuels, such as oil or gas instead of coal, in industries.
(vi) Redesigning machinery to increase energy efficiency and reduce noise pollution. 

Ans: The 'National Manufacturing Competitiveness Council' was set up to improve the productivity of the industrial sector. However, this council was wound up in March 2016.

Ans: The agro-industries give a major boost to agriculture by raising its productivity: 
(1) These industries supply irrigation pumps, fertilisers, insecticides, pesticides, plastic and PVC pipes, machines and tools, etc. to the farmers which helps them grow more food. 
(2) Industries help in transporting the goods produced to the markets. They also consume these products themselves. 
(3) Manufacturing industries help in modernising agriculture. They reduce the heavy dependence of people on agricultural income by providing them jobs in secondary and tertiary sectors.

Ans: The 'least cost' is known as a decision-making factor for the ideal location of an industry because it considers factors such as the availability of raw materials, labor, capital, power, and market at a lower cost. By choosing a location that minimizes these costs, the industry can ensure that its production costs are low and maximize its profitability.

Ans: 

Software Technology Parks are specialised centres established to promote the growth of the software industry by providing necessary infrastructure and services to software companies.

Features:

1. They provide single window service for software development and export activities.

2. They offer high-speed data communication facilities to software experts and companies.

Ans: Two factors that have contributed to a healthy growth of the automobile industry in India are: 

• The introduction of new and contemporary models stimulated the demand for vehicles in the market. 
• Foreign Direct Investment (FDI) has brought in new technology. 

Globalisation has led to a heavy rise in demand of these vehicles since products from around the world can be ordered at one click. The two centres of automobile industry are Jamshedpur and Gurgaon.