- a. Alluvial
- b. Black
- c. Red
- d. Alkaline
Red soils contain a high amount of iron oxides, which give them the characteristic red colour.
c
- a. Indian Council of Agricultural Research
- b. Indian Meteorological Department
- c. Soil Survey of India
- d. Indian Institute of Soil Science
The Soil Survey of India classified Indian soils into eight major groups based on their characteristics and distribution.
c
- a. Red soils
- b. Black soils
- c. Desert soils
- d. Alluvial soils
Alluvial soils are formed by the deposition of sediments carried by rivers.
d
- a. Hirakud Dam
- b. Bhakra Nangal Dam
- c. Mettur Dam
- d. Nagarjuna Sagar Dam
Bhakra Nangal is referred to in textbooks as the highest gravity dam in India.
b
- a. Wheat
- b. Rice
- c. Millets
- d. Coffee
Wheat, rice and millets are cereal food crops; coffee is a plantation/cash crop, so it is the odd one out.
d
- a. Khadar
- b. Bhangar
- c. Alluvial soil
- d. Black soil
Khadar and Bhangar are types of alluvial soil; Alluvial soil is the category they belong to. Black soil is a distinct soil type, so it is the odd one out.
d
- a. Inundational canals
- b. Perennial canals
- c. Tanks
- d. Canals
Inundational canals, perennial canals and canals are all types or categories of canal irrigation; tanks are storage structures (reservoirs), so 'Tanks' is the odd one out.
c
- a. Arid soils
- b. Saline soils
- c. Regur soils
- d. Mountain soils
Black soils are commonly called Regur soils or black cotton soils because they are ideal for cotton cultivation.
c
- a. Mettur Dam
- b. Kosi Dam
- c. Hirakud Dam
- d. Bhakra-Nangal Dam
Hirakud Dam (across the Mahanadi in Odisha) is one of the longest earthen dams in the world and is commonly cited in school texts as among the longest.
c
- a. Cotton
- b. Wheat
- c. Jute
- d. Tobacco
Jute is known as the 'Golden Fibre' because of its golden, silky shine and importance as a cash crop for packaging materials.
c
- a. Both (A) and (R) are true and (R) explains (A)
- b. Both (A) and (R) are true and (R) does not explain (A)
- c. (A) is correct (R) is false
- d. (A) is false (R) is true
A is correct — horticulture is the cultivation of fruits, vegetables and flowers. R is presented as a factual statement (textbook states India leads in production of certain fruits). Even if R is true, it does not explain the definition given in A, so (b) is correct.
b
- a. Both (A) and (R) are true and (R) explains (A)
- b. Both (A) and (R) are true and (R) does not explain (A)
- c. (A) is correct (R) is false
- d. (A) is false (R) is true
A is true — alluvial soils are river-deposited. R is true — paddy and wheat grow well in fertile alluvial soils. However, R (crop suitability) does not explain the formation of the soil, so (b) is correct.
b
Concise definition: mixture of mineral particles, organic matter, water, air and organisms forming a medium for plant growth.
Soil is the uppermost layer of the earth’s crust composed of minerals, organic matter, water, air and living organisms that supports plant life.
List the principal soils found in India as above; textbook often groups them into these main categories.
Major soil types: Alluvial, Black (Regur), Red, Laterite, Desert (Arid), Mountain (Forest) soils, Saline and Alkaline (Usar), Peaty and Marshy soils.
Black cotton soil (regur) is clayey, moisture-retentive, rich in calcium, magnesium and aluminium; it cracks on drying and is ideal for cotton.
Two characteristics: (1) High clay content and excellent moisture retention; (2) Swells when wet and forms deep cracks on drying (self-ploughing property).
Concise definition covering crop cultivation and animal husbandry as activities producing human useful products.
Agriculture is the science and practice of cultivating soil, growing crops and raising livestock for food, fibre, fuel and other products.
List and short description:
- Primitive subsistence (shifting cultivation, nomadic) – low inputs, for family consumption.
- Intensive subsistence – small holdings, high labour/input, multiple cropping.
- Commercial farming – large-scale, market-oriented (e.g., wheat, sugarcane).
- Plantation farming – single cash crop on large estates (tea, coffee, rubber).
- Mixed farming – crops and livestock together for diversification.
- Pastoralism – livestock rearing on natural pastures.
- Horticulture and dairy – specialized high-value produce and animal husbandry.
Main types: Subsistence (primitive and intensive), Commercial farming, Plantation farming, Mixed farming, Pastoralism (nomadic), Horticulture and Dairy farming.
Kharif (monsoon crop; sown with onset of monsoon, harvested Sep–Oct), Rabi (winter crop; sown Oct–Nov, harvested Apr–May), Zaid (summer crop; grown between Rabi and Kharif, mainly Mar–Jun).
Kharif, Rabi and Zaid.
Plantation crops are grown on large estates and include tea (Assam, Darjeeling, Nilgiris), coffee (Karnataka, Kerala), rubber (Kerala, Tamil Nadu), coconut (coastal Kerala, Goa), spices like cardamom and pepper (Kerala, Karnataka), arecanut, cashew and oil palm.
Tea, coffee, rubber, coconut, cardamom and spices (pepper), arecanut, cashew, oil palm.
Inland fisheries: rivers, lakes, ponds and reservoirs (freshwater). Marine fisheries: coastal (inshore) and deep-sea (offshore) fishing along the 7,500 km coastline. Brackish-water fisheries: estuaries and coastal lagoons. Aquaculture (culture fisheries): fish farming in ponds, tanks and cages; includes shrimp farming. Each category supports livelihoods and contributes to food and export earnings.
Main categories: Inland (freshwater), Marine (coastal and deep-sea), Brackish-water and Aquaculture (fish culture).
Key reasons: (1) Major employer — livelihood for a large rural population; (2) Provides food security and raw materials (e.g., cotton); (3) Supplies inputs to industry and contributes to exports and GDP.
Agriculture employs a large portion of the population, provides food and raw materials, supports rural livelihoods, and contributes significantly to national income and exports.
Concise reasons: (1) Recharges aquifers and raises water table; (2) Conserves water for dry periods; (3) Reduces runoff and erosion; (4) Helps sustainable water management.
Rainwater harvesting recharges groundwater, reduces dependency on external water sources, prevents soil erosion and flooding, and provides supplementary water for irrigation and domestic use.
Compare: Season — Kharif (Monsoon) vs Rabi (Winter); Sowing — June–July vs Oct–Dec; Harvest — Sept–Oct vs Mar–Apr; Dependence — Kharif depends on rainfall, Rabi on irrigation/cold weather; Examples provided.
Kharif crops are sown with the onset of monsoon (June–July) and harvested in autumn (Sept–Oct); they depend on monsoon rains (examples: paddy, maize, millets). Rabi crops are sown in winter (Oct–Dec) and harvested in spring (Mar–Apr); they require irrigation and cooler climate (examples: wheat, gram).
Key differences: Source — inundational (floods/seasonal river flow) vs perennial (reservoirs/perennial rivers); Duration — seasonal vs year-round; Reliability — less reliable vs reliable; Purpose — supplement during floods vs main irrigation source.
Inundational canals carry floodwaters during rainy season and are used seasonally; they depend on flood discharge. Perennial canals carry water throughout the year, usually fed by reservoirs, perennial rivers or dams, and provide continuous irrigation.
Differences: Location — sea/ocean vs rivers/lakes; Species — marine vs freshwater; Scale — usually large-scale commercial vs small-scale/local; Gear/boats — trawlers/large nets vs small boats/nets; Economic importance — both important but marine fishing supports major export-oriented fisheries.
Marine fishing occurs in seas and oceans (offshore and coastal waters) and yields marine species like tuna and mackerel; it uses larger trawlers and gear. Inland fishing takes place in rivers, lakes, ponds and reservoirs yielding freshwater species like carp and catla; it uses smaller boats and nets.
Compare: Origin — river deposits vs weathering of basalt; Colour/texture — light/varied (loamy) vs dark and clayey; Fertility — highly fertile (good for cereals) vs rich in specific minerals (good for cotton); Distribution — Indo-Gangetic plains/deltas vs Deccan plateau.
Alluvial soils are deposited by rivers, generally fertile, loamy to clayey, found in plains and deltas and suitable for paddy and wheat. Black soils (regur) are clayey, dark, rich in calcium and magnesium, found on the Deccan plateau, retain moisture well and are ideal for cotton.
- a. Cotton
- b. Wheat
- c. Rice
- d. Maize
Cotton is grown primarily for sale as a raw material for industry (textiles) and is a typical cash/plantation crop.
a
Correct matching (reconstructing OCR-scrambled right column):
1. Sugar bowl of India — Uttar Pradesh and Bihar
2. Coffee — Karnataka
3. Tehri — Highest dam in India (Tehri Dam)
4. Hirakud — Mahanadi
5. Horticulture — Golden Revolution (development of fruits/horticulture)
1 → Uttar Pradesh and Bihar; 2 → Karnataka; 3 → Highest dam in India (Tehri Dam); 4 → Mahanadi; 5 → Golden Revolution
1. Alluvial soil: Light to dark loam, fertile, rich in potash and lime; found in Indo-Gangetic plains, river valleys (Ganges, Indus, Brahmaputra) and coastal plains; ideal for rice, wheat, sugarcane.
2. Black (Regur) soil: Deep, clayey, moisture-retentive, rich in calcium and magnesium; occurs on Deccan Plateau (Maharashtra, parts of Madhya Pradesh, Gujarat, Karnataka); suits cotton and oilseeds.
3. Red and Yellow soil: Rich in iron, poor in nitrogen and humus, sandy to loamy; found in eastern and southern peninsular India (Tamil Nadu, Karnataka, Andhra, Odisha); used for millets, pulses, cotton.
4. Laterite soil: Porous, acidic, leached of nutrients, rich in iron and aluminium; occurs in high rainfall, high temperature areas of Western Ghats, eastern Ghats and parts of Kerala, Karnataka, Tamil Nadu; used for plantation crops and cashew.
5. Desert (Arid) soil: Sandy, saline, low organic matter, poor moisture retention; found in Rajasthan (Thar) and parts of Gujarat; suitable for drought-resistant crops and pastoralism.
Five major soils: Alluvial, Black (Regur), Red and Yellow, Laterite, Desert (Arid).
Definition: Multipurpose river projects combine several functions—irrigation, hydroelectric power, flood control, water supply, navigation and recreation—through large dams and reservoirs.
Examples:
- Bhakra-Nangal Project (Himachal Pradesh/Punjab/Haryana): On the Sutlej; provides irrigation to Punjab, Haryana and Rajasthan, hydroelectric power generation, and flood regulation; key for Green Revolution.
- Hirakud Project (Odisha): On the Mahanadi near Sambalpur; provides irrigation, hydroelectric power, flood control and supports navigation and fisheries. Both projects contribute to regional development and agriculture.
Multipurpose projects provide irrigation, hydropower, flood control, navigation and sometimes fisheries and recreation. Examples: Bhakra-Nangal and Hirakud projects.
Intensive farming: practised on small farms with high labour and capital inputs (fertilisers, irrigation), aims at maximum yield per hectare, common in densely populated areas (e.g., Indo-Gangetic plains). Mixed farming: integrates crops with livestock (animals provide manure, draught power and additional income), reduces risk through diversification, improves resource recycling and sustains family livelihood.
Intensive farming: small holdings, high inputs, multiple cropping, labour-intensive, high yield per unit area. Mixed farming: combination of crops and livestock on same farm, diversified income, efficient resource use.
Rice requires warm, humid climate, abundant water and flat, clayey alluvial soils for puddling and standing water; thus grown in deltaic regions, plains and irrigated areas (e.g., eastern and southern India). Wheat requires a cool, dry growing season with warm sunshine at harvest, moderate rainfall or irrigation, fertile alluvial soils and gentle slopes; hence cultivated in north-western plains (Punjab, Haryana, Uttar Pradesh).
Rice: high temperature (20–35°C), heavy rainfall or assured irrigation, level land and alluvial/clay soils that retain water. Wheat: cool growing season (10–25°C), well-drained fertile soils (alluvial), moderate rainfall and winter sunshine, irrigation for areas with insufficient rain.
Without agriculture humans would remain hunter-gatherers with low population densities. There would be no surplus food to support urbanization, specialized professions, state formation, or advanced technologies. Trade, written records, industry and modern economies would not develop as they did. Nutrition, life expectancy and social complexity would be drastically lower. Thus agriculture is foundational for modern civilization.
A world without agriculture would lack stable food supply, leading to small, nomadic populations, no cities or complex societies, and limited technological and cultural development.
Practical steps:
- Strengthen and implement legally binding interstate agreements or follow tribunal/SC rulings.
- Establish joint river-basin authorities for integrated planning and transparent data sharing.
- Increase water-use efficiency in agriculture (drip/sprinkler irrigation, crop rotation, micro-irrigation).
- Promote watershed management, rainwater harvesting and recharge of groundwater.
- Use water pricing and incentives to discourage wasteful use; invest in interlinking and water storage where feasible.
- Encourage political dialogue, confidence-building measures and public participation to reduce tensions.
Solutions: enforce interstate water-sharing agreements/tribunals, create joint river basin management boards, improve water-use efficiency, invest in conservation (rainwater harvesting, watershed management), and promote negotiation and cooperation.
On the political map shade: (1) Northern plains: from Punjab, Haryana, western Uttar Pradesh through eastern Uttar Pradesh, Bihar to West Bengal — the major alluvial tract; (2) Indo-Gangetic delta: Sunderbans and adjoining areas in West Bengal; (3) Brahmaputra valley in Assam; (4) Coastal alluvial tracts such as deltas of Mahanadi, Godavari, Krishna and Kaveri. These are the principal alluvial soil regions.
Mark the entire Indo-Gangetic plain (Punjab to West Bengal), the Brahmaputra valley in Assam, and the coastal and deltaic alluvial tracts (Ganges and Brahmaputra deltas).
On the map indicate the black soil (Regur) tract covering: central and southern parts of the Deccan Plateau—primarily Maharashtra (extensive), the large black-soil regions of Gujarat (southern parts), parts of Madhya Pradesh (western), Karnataka (northern and central), Telangana and parts of Andhra Pradesh. These are associated with Deccan trap lava flows.
Shade the Deccan Plateau: large parts of Maharashtra, western Madhya Pradesh, Gujarat, parts of Telangana, Andhra Pradesh and Karnataka.
On the map mark: Hirakud Dam in western Odisha across the Mahanadi near Sambalpur; Mettur Dam in north-west Tamil Nadu across the Cauvery at Mettur (Salem district); Damodar Valley Project dams (e.g., Maithon and Panchet) on the Damodar river in parts of Jharkhand and West Bengal (near Dhanbad/Burnpur areas).
Hirakud: on Mahanadi near Sambalpur (Odisha). Mettur: on Cauvery at Mettur (Salem district, Tamil Nadu). Damodar (Damodar Valley Project dams such as Maithon and Panchet): on the Damodar river in Jharkhand/West Bengal region.
On the map indicate the fertile alluvial plains of the Ganges-Brahmaputra delta—mainly West Bengal (low-lying coastal districts), parts of northern Bihar and Assam valley tracts where jute is grown. These are moist, warm areas with fertile alluvial soils.
Main jute regions: the lower Ganges-Brahmaputra delta—primarily West Bengal (Hooghly, Nadia, Murshidabad), Bihar (northern parts), Assam and Bangladesh (outside India).
On the map mark for tea: Assam valley (Assam), Darjeeling and Dooars (northern West Bengal), Nilgiris and Darjeeling Hills (south India). For coffee: Kodagu (Coorg) and Chikmagalur (Karnataka), Wayanad and Malabar (Kerala), Nilgiris and Anamalai hills (Tamil Nadu).
Tea areas: Assam, Darjeeling (West Bengal), Nilgiris (Tamil Nadu). Coffee areas: Coorg/Chikmagalur (Karnataka), Wayanad (Kerala), Nilgiris/Anamalai (Tamil Nadu).
On the map shade the arid/desert soils of the Thar Desert in western Rajasthan (Barmer, Jaisalmer, Jodhpur regions) and adjoining parts of Gujarat. Also mark smaller sandy tracts in western Haryana and southwestern Punjab which have arid characteristics.
Mark the Thar Desert region in western Rajasthan and adjoining parts of Gujarat; also indicate some sandy tracts in western Haryana and southwestern Punjab.
On a blank map of India, place a dot and label for each city as follows:
- Tuticorin (Thoothukudi): locate southern Tamil Nadu near the tip of the peninsula facing Sri Lanka, on the Gulf of Mannar (southeast coast).
- Chennai: locate on the northeastern coast of Tamil Nadu, on the Coromandel Coast of the Bay of Bengal (north of Tuticorin).
- Machilipatnam: locate on the east coast of Andhra Pradesh, south of Vijayawada and near the mouth of the Krishna River on the Bay of Bengal.
- Cochin (Kochi): mark on the southwest coast in central Kerala, on the Arabian Sea (near backwaters on the Malabar Coast).
- Mumbai: mark on the west coast in Maharashtra, on a natural harbour on the Arabian Sea (north of Goa).
Mark the following coastal cities on the map: Tuticorin (Thoothukudi) — southern Tamil Nadu on the Gulf of Mannar; Chennai — northeast Tamil Nadu on the Bay of Bengal; Cochin (Kochi) — central Kerala on the Arabian Sea (south-west coast); Mumbai — west coast, Maharashtra on the Arabian Sea; Machilipatnam — east coast, Krishna district of Andhra Pradesh on the Bay of Bengal.
On the map:
- Cauvery (Kaveri) delta: mark and shade the triangular lowland region in eastern Tamil Nadu between the lower course of the Kaveri and the Bay of Bengal, centred on Thanjavur, Tiruvarur, Nagapattinam districts (southeast of Tiruchirappalli).
- Godavari delta: mark and shade the broad deltaic area on the east coast of Andhra Pradesh around Rajahmundry and Kakinada (Konaseema), where the Godavari fans out before entering the Bay of Bengal.
In both cases shade the coastal plain immediately inland from the river mouths to indicate the fertile delta regions.
Shade the Cauvery (Kaveri) delta in eastern Tamil Nadu around Thanjavur–Tiruvarur–Nagapattinam and the Godavari delta in coastal Andhra Pradesh around the Rajahmundry–Kakinada (Konaseema) region where the river meets the Bay of Bengal.