Manufacturing Industries — Practice

Question 1

Why is the sugar industry shifting from Uttar Pradesh to Maharashtra and peninsular India? Explain with THREE geographical reasons.

Accepted Answer

Step 1 — LONGER CRUSHING SEASON in South: In peninsular India (Maharashtra, Karnataka, AP), sugarcane can be harvested and crushed for a longer period — approximately 4-5 months (October to February). In UP and North India, the crushing season is shorter (only 2-3 months) because cane is ready later and cold weather reduces the crushing period. More crushing time = more sugar per mill per year.

Step 2 — HIGHER SUCROSE CONTENT: The sugarcane varieties grown in tropical peninsular India have higher sugar content (sucrose) per tonne of cane than the northern varieties. Higher sucrose = more sugar output per tonne of cane crushed. This means South Indian mills are more efficient at the same input.

Step 3 — BETTER COOPERATIVE MANAGEMENT: Maharashtra's sugar industry is largely organised through farmer cooperatives (like Sahakari Sugar Factories) where farmers own shares in the mill. These cooperatives pay farmers better prices, maintain mills better, and share profits — creating strong farmer support for the industry. North Indian mills (often private or government-owned) have had more labour disputes and management inefficiencies.

✦ Answer: South India's sugar advantages over North India: (1) Longer crushing season (4-5 months vs 2-3 months), allowing mills to operate profitably longer per year. (2) Higher sucrose content in peninsular sugarcane varieties, yielding more sugar per tonne. (3) Better cooperative management (Maharashtra's cooperative mills are more efficient and farmer-friendly). UP is still India's largest sugarcane producer by volume, but peninsular mills are more productive per unit.

Question 2

Name any FOUR major iron and steel plants in India. State the foreign country that provided technical collaboration for three of them.

Accepted Answer

Step 1 — BHILAI STEEL PLANT (Chhattisgarh): Established 1959. Technical collaboration with the SOVIET UNION (Russia). One of India's largest steel producers. Located near iron ore of Durg district and coal from Korba.

Step 2 — DURGAPUR STEEL PLANT (West Bengal): Established 1959. Technical collaboration with BRITAIN. Located in the Damodar Valley with access to Raniganj coal and Jharkhand iron ore.

Step 3 — ROURKELA STEEL PLANT (Odisha): Established 1959. Technical collaboration with GERMANY (West Germany). First Indian steel plant to use oxygen-based steel making. Located near iron ore of Keonjhar and coal of Jharia.

Step 4 — JAMSHEDPUR (Jharkhand): TATA STEEL — India's oldest (1907) and largest PRIVATE SECTOR steel plant. No foreign government collaboration — built by Jamshetji Tata before independence.

✦ Answer: (1) Bhilai (Chhattisgarh) — Russian collaboration. (2) Durgapur (W Bengal) — British collaboration. (3) Rourkela (Odisha) — German collaboration. (4) Bokaro (Jharkhand) — Russian collaboration. Jamshedpur (Tata Steel) is the oldest private plant — no government foreign collaboration.

Question 3

Why did the cotton textile industry develop mainly in Maharashtra and Gujarat? Explain the role of FOUR location factors.

Accepted Answer

Step 1 — RAW MATERIAL PROXIMITY: Both Maharashtra and Gujarat have extensive black cotton soil (regur) that grows high-quality cotton. The Deccan Plateau in Maharashtra and the Saurashtra region of Gujarat produce abundant raw cotton, giving mills immediate access to the primary input without long-distance transport.

Step 2 — HUMID CLIMATE: Cotton spinning requires humid air — in dry conditions, thread breaks during weaving, reducing productivity and increasing waste. Mumbai's coastal climate (humidity ~70-80% year-round) is naturally ideal for cotton spinning and weaving. Inland Gujarat's climate is drier, but modern mills use artificial humidification.

Step 3 — PORT ACCESS: Mumbai Port (and later JNPT at Nhava Sheva) and Gujarat's Kandla and Mundra ports allow efficient import of specialised machinery (from Lancashire, Germany, Japan) and export of finished textile products to global markets. Maritime connectivity was critical when the industry was establishing itself in the 19th century.

Step 4 — LABOUR AND POWER: Both states have large urban labour pools (Mumbai's migrant workforce, Ahmedabad's skilled textile workers). Hydroelectric power from the Western Ghats and later Tata Power supplied reliable, relatively cheap electricity for the energy-intensive spinning and weaving operations.

✦ Answer: Cotton textiles concentrated in Maharashtra-Gujarat due to: (1) Raw material: black cotton soil provides domestic cotton. (2) Humid climate: prevents thread breakage during spinning — naturally ideal at Mumbai's coastal location. (3) Port access: Mumbai and Kandla ports for machinery import and textile export. (4) Labour + power: urban labour pools and Western Ghats hydroelectric power supply.

Question 4

Describe the FOUR types of industrial pollution. For each type, give one Indian industrial example and one control measure.

Accepted Answer

Step 1 — AIR POLLUTION: Factories release SO₂ (from coal combustion), carbon monoxide, nitrogen oxides, and particulate matter (fly ash from thermal power plants, cement dust). Indian example: Thermal power plants in Korba (Chhattisgarh) release SO₂ causing acid rain. Control: Install scrubbers (sulfur dioxide absorbers) in chimneys; switch to cleaner coal or gas.

Step 2 — WATER POLLUTION: Industries discharge untreated chemical effluents (from textile dyeing, tanneries), thermal effluents (hot water from power plants), and toxic heavy metals into rivers. Indian example: Ganga River pollution from tanneries in Kanpur (leather industry) discharging untreated chromium compounds. Control: Effluent Treatment Plants (ETPs) mandatory before discharge; recycle cooling water.

Step 3 — LAND/SOIL POLLUTION: Toxic solid waste (fly ash from thermal plants), chemical sludge, and mining overburden contaminate land permanently. Indian example: Fly ash lagoons around Singrauli thermal plant (UP/MP) have contaminated groundwater and farmland for kilometres. Control: Fly ash used as construction material (cement ingredient), compulsory waste disposal in certified landfills.

Step 4 — NOISE POLLUTION: Heavy machinery (textile looms, steel hammers), transport (rail, trucks), and construction create damaging decibel levels. Indian example: Workers in Bhilai Steel Plant exposed to >85 dB noise, causing hearing damage. Control: Sound-proof enclosures for machinery; mandatory ear protection for workers; industry buffer zones from residential areas.

✦ Answer: (1) Air pollution (SO₂, particulates) — thermal plants, cement; control: scrubbers, cleaner fuels. (2) Water pollution (chemical effluents, thermal) — tanneries, power plants into rivers; control: Effluent Treatment Plants. (3) Land/soil pollution (fly ash, chemical waste) — thermal ash ponds; control: fly ash as cement ingredient. (4) Noise pollution (machinery, transport) — steel plants; control: machine enclosures, ear protection.

Practice — Manufacturing Industries

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