Three ways to reduce freshwater pollution can be
(i) Restructuring the manufacturing processes in various industries to reduce or eliminate pollutants through pollution prevention methods.
(ii) Creating man-made cooling ponds designed to cool heated effluent waters of industries by evaporation, condensation and radiation.
(iii) Filtration of the sewage in water treatment plants before dumping it into water bodies.

Fresh water sources are polluted by
(a) Organic and inorganic wastes.
(b) Effluents discharged by industries into rivers.
(c) The main culprits are paper and pulp, chemical, textile, petroleum, refineries, tanneries industries, etc.

India is an important iron and steel producing country in the world, yet we are not able to perform to our full potential because of the following reasons.
(a) High costs and limited availability of coking coal.
(b) Lower productivity of labour.
(c) Irregular supply of energy.

The two important challenges faced by the jute industry in India are as follows:
(a) Stiff competition in the international market from synthetic substitutes.
(b) To face challenges of competitors like Bangladesh, Brazil, Phillippines, Egypt and Thailand.
The Government policy of mandatory use of jute packaging is one step to stimulate its demand.

Production of good in the factories in large quantities after processing from raw materials to more valuable products, is called manufacturing industry. Manufacturing industry is considered as the backbone of economic development because of the following reasons.
(a) It helps in modernizing agriculture which is the backbone of our economy.
(b) Export of manufactured goods expands trade and commerce and brings the much needed foreign exchange.

(a) Bangalore is located in Deccan Plateau while Silicon Valley in California is located next to the Rocky Mountains.

(b) Both have clean environment.

(c) Pleasant climate throughout the year.

(d) In the vicinity of educational, scientific and technological centres.

(e) Close to major roads and airports.

(f) Good access to markets.

(g) Both have skilled work force.

(h) Low or affordable cost of living.

(i) Integrated steel plants are different from mini steel plants in many aspects.
   (a) An integrated steel plant is large and handles everything in one complex from integrating raw materials to steel making, rolling and shaping.
   (b) On the other hand, a mini steel plant is smaller, has electric furnaces, uses steel scrap and sponge iron, and has re-rollers that use steel ingots as well. It produces mild and alloy steel of given specifications.
The problems faced by this industry are:
   (a) high production costs and limited availability of coking coal
   (b) lower productivity of labour
   (c) irregular supply of energy
   (d) poor infrastructure. Recent developments that have led to a rise in the production capacity of this industry are liberalisation and Foreign Direct Investment, with help from private entrepreneurs.
(ii) Industrial pollution of the environment is of four types: air, water, land and noise. Air pollution is caused by smoke released by chemical and paper factories, brick kilns, refineries and smelting plants, and burning of fossil fuels in factories ignoring pollution norms. Water pollution is caused by the discharging of organic and inorganic industrial wastes and effluents into rivers. This form of pollution is caused by paper, pulp, chemical, textile, dyeing, petroleum refineries, tanneries and electroplating industries. The major solid wastes released into rivers in India are fly ash, phospo - gypsum, and iron and steel slags. Thermal pollution of water is another form of water pollution, caused by the emission of hot water from factories and thermal plants into rivers and ponds. Dumping of solid wastes renders the soil infertile and useless too. Lastly, noise pollution results from industrial and construction activities, machinery, generators, and saws, pneumatic and electric drills.
(iii) The steps to be taken to minimise environmental degradation by industry are as follows:
   (a) To control water pollution, industrial effluents need to be treated on all three levels (primary, secondary and tertiary); the use of water for processing should be minimised via reuse and recycling; rainwater can be harvested to meet water requirements, and ground water usage should be regulated by law.
   (b) For the minimisation of air pollution, smoke stacks should be fitted to factories with electrostatic precipitators, fabric filters, scrubbers and inertial separators. Also, smoke can be reduced by using oil or gas instead of coal.
   (c) Noise pollution can be controlled by fitting generators with silencers, redesigning machinery to reduce noise, and using earplugs and earphones besides other noise absorbing material.

NTPC is a major power providing corporation in India. It has ISO certification for EMS (Environmental Management System) 14001. The corporation has a proactive approach for preserving the natural environment and resources like water, oil, gas and fuels in places where it is setting up power plants. This is achieved through the following methods.
(a) Optimum utilization of equipment adopting latest techniques and upgrading existing equipment.
(b) Minimizing waste generation by maximizing ash utilization.
(c) Providing green belts for nurturing ecological balances and encouraging afforestation.
(d) Reducing environmental pollution through ash pond management, ash water recycling system and liquid waste management.
(e) Ecological monitoring reviews and online database management for all its power stations.

The following are the three major problems faced by the cotton textile industries in India:
(a) Erratic power supply.
(b) Old and obsolete machinery.
(c) Stiff competition from the synthetic fibre industry.
The textile industry occupies a unique position in the Indian economy.
(a) It contributes significantly to the industrial production as 14 per cent of the total production of industries, comes from textiles.
(b) It provides direct employment to about 35 million people.
(c) It contributes considerable foreign exchange to the GDP.

Integrated steel plants are different from mini steel plants in many aspects.
(a) An integrated steel plant is large and handles everything in one complex from integrating raw materials to steel making, rolling and shaping.
(b) On the other hand, a mini steel plant is smaller, has electric furnaces, uses steel scrap and sponge iron, and has re-rollers that use steel ingots as well. It produces mild and alloy steel of given specifications.
The problems faced by this industry are:
(a) high production costs and limited availability of coking coal
(b) lower productivity of labour
(c) irregular supply of energy.
(d) poor infrastructure. Recent developments that have led to a rise in the production capacity of this industry are liberalisation and Foreign Direct Investment, with help from private entrepreneurs.

We benefit from foreign exchange. Our handloom products are in great demand so financially we gain a lot.

Aluminium is obtained from Bauxite.

The Bhilai Steel plant is located in Chhattisgarh.

The majority of sugar mills are concentrated in Uttar Pradesh and Bihar.

The textile industry is an example of the agro-based industry.

Small scale and large scale industries are classified on the basis of capital investment.