- a. Cauvery delta
- b. Mahanadi delta
- c. Godavari delta
- d. Krishna delta
The Cauvery (Kaveri) delta is very fertile and historically known as the Rice Bowl or Granary of South India.
a
- a. Pulses
- b. Millets
- c. Oilseeds
- d. Rice
Rice is the main staple. Millets (ragi, pearl millet, etc.) are traditionally the second staple food in Tamil Nadu.
b
- a. Mettur
- b. Papansam
- c. Sathanur
- d. Thungabahdra
Mettur Dam (across the Cauvery) is one of the largest multipurpose projects in Tamil Nadu and includes hydro-electric installations.
a
- a. 3 and 15
- b. 4 and 16
- c. 3 and 16
- d. 4 and 15
Textbook reference: Tamil Nadu has three major ports (Chennai, Ennore/Kamarajar, Tuticorin) and a number of minor ports along its coastline commonly listed as 15 in school material. Hence option (a) is the correct choice in the textbook context.
a
The chapter states that agriculture has been the mainstay of Tamil Nadu’s economy, with more than 65% of the population depending on this sector for their living. So the blank is answered as more than 65%.
More than 65%
The chapter states that agriculture has been the mainstay of Tamil Nadu’s economy, with more than 65% of the population depending on this sector for their living. So the blank is answered as more than 65%.
More than 65%
Sathanur Dam is built across the Thenpennai (also called Ponnaiyar) river in Tamil Nadu.
Thenpennai (Ponnaiyar)
Sathanur Dam is built across the Pennaiyar (also spelled Pennai or Penniar) River in Tiruvannamalai district and is an important irrigation and water supply project.
Pennaiyar (Pennai) River
Chennai International Airport is historically ranked among the top airports in India after Mumbai and Delhi in terms of passenger traffic and international connectivity.
Chennai International Airport
The textbook refers to Chennai as the third largest airport in India after Mumbai and Delhi based on passenger and international traffic rankings at the time.
Chennai International Airport
The difference between export value and import value is referred to as the balance of trade. A positive difference is a trade surplus; a negative difference is a trade deficit.
Balance of trade (trade balance)
The difference between the value of exports and imports of a region/country is termed the balance of trade (positive = surplus, negative = deficit).
balance of trade (trade balance)
State the main airports and the three major seaports of Tamil Nadu.
Major airports: Chennai, Coimbatore, Madurai, Tiruchirappalli; other airports: Salem, Thoothukudi. Major seaports: Chennai, Kamarajar (Ennore), V.O. Chidambaranar (Tuticorin).
The mineral–location pairs as presented on the source page correspond to standard mineral distribution listings in the chapter:
- Bauxite — Salem
- Gypsum — Servaroy hills
- Iron ore — Coimbatore
- Limestone — Tiruchirapalli
These are the intended matches in the exercise.
1 — Salem; 2 — Servaroy hills; 3 — Coimbatore; 4 — Tiruchirapalli
Final matching as presented in the textbook exercise: 1. Bauxite — Salem; 2. Gypsum — Servaroy (Shevaroy) hills; 3. Iron ore — Coimbatore; 4. Limestone — Tiruchirapalli.
1 → Salem; 2 → Servaroy hills; 3 → Coimbatore; 4 → Tiruchirapalli
- (a). Both (A) and (R) are true and (R) explains (A)
- (b). Both (A) and (R) are true but, (R) does not explain (A)
- (c). (A) is true but (R) is false
- (d). (A) is false but (R) is true
Both statements are true and the reason explains the assertion: the region is called the Textile Valley because textile industry there contributes significantly to the state's economy.
(a)
- (a). Both (A) and (R) are true and (R) explains (A)
- (b). Both (A) and (R) are true but, (R) does not explain (A)
- (c). (A) is true but (R) is false
- (d). (A) is false but (R) is true
A is false: Nilgiris is not the least populated district (other districts such as Perambalur have smaller populations). R is true: Nilgiris is located in the western part of Tamil Nadu (in the Nilgiri hills). R does not make A true, so the correct choice is (d).
(d)
Tamil Nadu's principal cropping seasons are:
- Kuruvai (short-term, sown June–July, harvested Sep–Oct)
- Samba (long-term, sown Aug–Sep, harvested Jan–Feb)
- Thaladi (sown Oct–Nov, harvested Feb–Apr)
(These are the locally used seasons corresponding to Kharif/Rabi cycles.)
Kuruvai, Samba and Thaladi (major seasons)
(Same as earlier) The main cropping seasons in Tamil Nadu are Kuruvai (short-term, June–Sept), Samba (long-term, Aug–Jan) and Thaladi (Oct–Mar).
Kuruvai, Samba and Thaladi
Coimbatore's economy is dominated by textile manufacturing (spinning, weaving, garment units), textile machinery production and related engineering industries. The concentration of textile mills and industrial activity earned it the nickname 'Manchester of South India.'
Because Coimbatore is a major textile and industrial centre with numerous cotton mills, textile factories and engineering industries—similar to Manchester in England—making it the textile hub of South India.
Coimbatore's concentration of textile mills, spinning and weaving units, textile machinery manufactures and associated industries has made it the textile hub of South India, earning the nickname 'Manchester of South India.'
Because it is a major textile and industrial centre with many cotton mills and related engineering industries, similar to Manchester in England.
These dams serve irrigation, power generation, flood control and water supply functions. Examples: Mettur Dam (on Kaveri) is the largest, Bhavani Sagar on Bhavani River, Sathanur on Pennaiyar, Papanasam and Vaigai dams in southern districts.
Major multipurpose projects include Mettur (Stanley Reservoir), Bhavani Sagar (Lower Bhavani), Sathanur, Papanasam and Vaigai dams.
These projects provide irrigation, hydroelectricity, drinking water and flood control; Mettur (Stanley Reservoir) is one of the largest.
Mettur, Bhavani Sagar, Sathanur, Papanasam and Vaigai dams are important multipurpose projects.
MRTS is a rapid urban rail system designed to provide efficient commuter transport in the city—Chennai's MRTS is an elevated suburban line linking central areas to the southern suburbs.
MRTS stands for Mass Rapid Transit System, a suburban elevated rail system in Chennai.
Give names of the principal airports and the three central-government major ports; note existence of multiple minor ports.
Major airports: Chennai, Coimbatore, Madurai, Tiruchirappalli; other airports: Salem, Thoothukudi (domestic). Major seaports: Chennai Port, Kamarajar (Ennore) Port, V.O. Chidambaranar (Tuticorin) Port. (Tamil Nadu also has about 15 minor ports and many fishing harbours.)
Marine fishing:
- Takes place in the sea along the coast
- Targets marine species (tuna, mackerel, sardine, prawns)
- Uses boats, trawlers and mechanised gear
- Major centres: Chennai, Tuticorin, Nagapattinam
Inland fishing:
- Takes place in rivers, reservoirs, tanks and ponds
- Targets freshwater species (catla, rohu, carp)
- Often small-scale, uses nets, cages and ponds
- Linked to irrigation tanks and aquaculture
See solution
1. Marine fishing vs Inland fishing:
- Marine: takes place in the sea, targets marine species, uses boats/trawlers; coastal centres.
- Inland: in rivers/reservoirs/ponds, targets freshwater species, often small-scale aquaculture.
2. Food crops vs Non-food crops:
- Food crops: grown for direct human consumption (rice, millets, pulses).
- Non-food crops (cash/industrial crops): grown for industrial use or export (cotton, oilseeds, fibre, plantation crops like tea, rubber).
3. Surface water vs Ground water:
- Surface water: water in rivers, lakes, reservoirs; easily accessible but seasonal.
- Ground water: water stored in aquifers below ground; available via wells/borewells and used when surface sources are insufficient.
See solution
Points of distinction:
- Purpose: Food crops = human/household consumption; Non-food crops = industrial/commercial/raw materials.
- Examples: Food crops—rice, ragi, millets, pulses; Non-food crops—cotton, sugarcane, oilseeds, rubber.
- Economic role: Food crops ensure food security; non-food crops earn cash income and supply industry (textiles, sugar, oil extraction).
Food crops are grown primarily for human consumption (e.g., rice, millets, pulses). Non-food crops are grown for industrial, commercial or other uses (e.g., cotton, sugarcane, rubber, oilseeds).
Differences: source—surface water (rivers/reservoirs) vs groundwater (aquifers); availability—surface water is seasonal and visible, groundwater is stored underground and can be tapped any time though recharge-dependent; quality—groundwater often filtered but can have mineral content; use—both used for irrigation and drinking, groundwater often supplements surface supplies.
Surface water is water on the earth's surface (rivers, lakes, reservoirs); groundwater is water stored below the ground in aquifers (wells, borewells).
Reasons why farmers switch to organic farming:
- Reduce soil degradation and restore soil fertility
- Avoid health hazards from chemical residues
- Growing market demand and premium price for organic produce
- Lower dependence on costly chemical inputs (long-term cost savings)
- Environmental concerns (protect groundwater, biodiversity)
See solution
Reasons: cities offer more employment opportunities (industry, services), better education and health facilities, transport and housing, and social amenities, attracting rural migrants. Land in cities is intensively used (multistorey buildings) leading to higher population per unit area compared to dispersed rural settlements.
Cities have higher population density due to concentration of jobs, services, infrastructure and migration from rural areas.
Plantation farming in Tamil Nadu is practiced mainly in the hill regions where climate and rainfall are suitable. Major plantation crops include tea and coffee in the Nilgiris and surrounding hills, rubber in southern highlands, cardamom and pepper in the Western Ghats, and coconut along the coastal belt. Plantations are characterized by large-scale, long-term cultivation of a single cash crop, reliance on hired labour, and often processing units nearby (tea factories, coffee estates). These plantations contribute to exports and provide rural employment, but they require good infrastructure and are sensitive to changes in world prices and climatic conditions.
See solution
Plantation farming in Tamil Nadu occurs mainly in the hill and high-rainfall regions. Key plantation crops include tea and coffee (Nilgiris and Palani hills), rubber (southern districts), cardamom and pepper (Western Ghats), and coconut along the coast. Plantations are characterized by monoculture, significant employment of wage labour, and processing units on or near estates (tea factories, coffee curing works). They play an important role in export earnings and regional employment but require good infrastructure and are sensitive to climatic variation and global market prices.
See solution
Summary points: major rivers—Kaveri (main), Palar, Vaigai, Pennaiyar, Tamirabarani; major reservoirs/dams—Mettur (Stanley Reservoir) for irrigation and power, Bhavani Sagar, Sathanur; tanks and canals are traditional irrigation sources; groundwater supplements irrigation and domestic needs but is overused in many regions. The state receives most rainfall from the northeast monsoon, causing seasonal variability. Issues include water scarcity in arid zones, need for conservation, watershed management, and inter-state water sharing disputes.
Tamil Nadu's water resources include rivers (notably the Kaveri and its tributaries), reservoirs and dams (Mettur, Bhavani Sagar, Sathanur, Papanasam, Vaigai), tanks and irrigation canals, and groundwater (wells and borewells). The state depends heavily on northeast monsoon rains; surface water is limited and unevenly distributed, leading to extensive groundwater use and water management challenges including over-extraction and interstate river disputes (e.g., Cauvery).
Key features: major river is Kaveri supplying irrigation to delta regions; major dams like Mettur (irrigation & power) and Bhavani Sagar support agriculture; many tanks and small reservoirs store water locally. Dependence on monsoon rains causes variability, and interstate water disputes (e.g., Kaveri) affect supply. Management challenges include water conservation, recharge of groundwater, efficient irrigation and equitable sharing.
Tamil Nadu's water resources comprise rivers (Kaveri and its tributaries, Palar, Vaigai, Pennaiyar, Tamirabarani), reservoirs/dams (Mettur, Bhavani Sagar, Sathanur, Papanasam, Vaigai), traditional tanks and canals, and widespread groundwater use. The state depends largely on the northeast monsoon, resulting in seasonal water availability and regional scarcity. Groundwater supplements irrigation and domestic needs but faces over-extraction in many areas.
Overview: Neyveli in Cuddalore district is famous for lignite mining. Limestone, used for cement, is found in Ariyalur and Salem. Coastal placer deposits yield ilmenite, monazite and garnet important for heavy mineral mining. Salem region has chromite, magnesite and iron ore. These minerals support industries like power (lignite), cement (limestone) and mineral-based industries. (Note: exact localities and reserves vary by source and period.)
Tamil Nadu has varied mineral resources: major lignite deposits at Neyveli; limestone deposits in Ariyalur, Salem and adjoining areas; coastal heavy minerals (ilmenite, monazite, garnet) along southern coasts (Tuticorin, Ramanathapuram); iron ore, chromite and magnesite occur in Salem and surrounding hill regions; sillimanite and garnet are found in southern districts.
Major mining areas: Neyveli (lignite), Ariyalur/Salem (limestone), coastal belts (placer minerals like ilmenite and monazite), Salem hills (chromite, magnesite, iron ore). These minerals support power plants, cement, metallurgical and mineral industries. Details and reserve sizes depend on geological surveys.
Tamil Nadu's mineral wealth includes lignite at Neyveli, limestone around Ariyalur and Salem, coastal heavy minerals (ilmenite, monazite, garnet) along the southern coast, and occurrences of iron ore, chromite, magnesite and sillimanite in hill regions such as Salem and southern districts.
List and briefly describe road, rail, air and sea transport in Tamil Nadu with examples of major hubs and functions.
Tamil Nadu has well-developed road, rail, air and sea transport. Roads: dense network of National Highways, State Highways and district roads connecting towns and villages; extensive bus services (state and private). Rail: broad‑gauge railway network with major junctions (Chennai, Madurai, Tiruchirappalli, Coimbatore), suburban services in Chennai and freight movement. Air: several international and domestic airports (Chennai, Coimbatore, Madurai, Tiruchirappalli; smaller airports at Salem, Thoothukudi) providing passenger and air‑cargo services. Sea: major ports (Chennai, Kamarajar/Ennore, V.O. Chidambaranar/Tuticorin) handle international trade and cargo; about 15 minor ports and many fishing harbours support coastal trade and fisheries. Inland waterways/coastal shipping exist but are limited compared with other modes.
Provide a paragraph describing road, rail, air and sea transport with major examples and their roles.
Tamil Nadu's transport system includes roads, railways, airways and seaports. Roads: an extensive network of National and State Highways linking cities, towns and rural areas; major bus services (TNSTC and private operators). Railways: broad‑gauge main lines, important junctions (Chennai, Madurai, Tiruchirappalli, Coimbatore), Chennai suburban trains and freight corridors. Airways: international and domestic airports (Chennai, Coimbatore, Madurai, Tiruchirappalli; smaller airports at Salem and Thoothukudi) for passenger and cargo traffic. Seaports: major ports (Chennai, Kamarajar/Ennore, V.O. Chidambaranar/Tuticorin) handle international trade; many minor ports and fishing harbours support coastal commerce and fisheries. Inland waterways/coastal shipping operate on a limited scale.
On the outline map mark the following key items:
- Major crops: Cauvery delta (rice) — Tanjore/Thanjavur region; Sugarcane — Lower Cauvery areas; Cotton — Coimbatore/Erode/Tirupur; Millets — inland districts; Tea/Coffee — Nilgiris/Kodaikanal hills; Coconut — coastal belt.
- Minerals: Limestone — Tiruchirapalli area; Bauxite — Salem region; Gypsum — Ramanathapuram/other known deposits (verify local sites in textbook); Graphite/iron ore deposits — refer to local mineral map.
- Major dams: Mettur (Cauvery), Sathanur (Thenpennai/Ponnaiyar), Bhavanisagar (Bhavani), Amaravathy, Kodayar (others as per textbook).
- Airports: Chennai, Coimbatore, Madurai, Tiruchirappalli (Trichy), Tuticorin (check list in textbook).
- Sea ports: Chennai, Ennore (Kamarajar port), V.O. Chidambaranar (Tuticorin), Nagapattinam / Karaikal (minor ports), Cuddalore (as applicable).
(Students should label these locations on the map; consult the textbook map to place precise points.)
See solution
Same guidance as earlier map exercise: mark rice in Cauvery delta (Thanjavur), cotton and textile belt in Coimbatore–Tiruppur–Erode, tea/coffee in Nilgiris/Palakkad hills, coconut along coast; minerals such as limestone (Trichy), bauxite (Salem), gypsum and other deposits as per textbook map; dams — Mettur, Sathanur, Bhavanisagar, Amaravathi; airports — Chennai, Coimbatore, Madurai, Trichy; seaports — Chennai, Ennore/Kamarajar, V.O. Chidambaranar (Tuticorin), Nagapattinam. Verify and pinpoint using the chapter map.
See solution
- a. Both (A) and (R) are true and (R) explains (A)
- b. Both (A) and (R) are true but, (R) does not explain (A)
- c. (A) is true but (R) is false
- d. (A) is false but (R) is true
Both statements are true and the reason explains why the region is termed the Textile Valley — because its textile industry significantly contributes to the state's economy.
a
- a. Both (A) and (R) are true and (R) explains (A)
- b. Both (A) and (R) are true but, (R) does not explain (A)
- c. (A) is true but (R) is false
- d. (A) is false but (R) is true
Assertion is incorrect (other districts have smaller populations than Nilgiris). Reason is correct (Nilgiris district lies in the western hilly region of Tamil Nadu). Hence (A) false and (R) true → option (d).
d
Reasons include: restoring soil health, avoiding chemical residues and health risks, growing consumer demand and premium prices for organic produce, reducing dependence on expensive chemical inputs, and environmental protection (less pollution of soil and water).
See solution
Higher job opportunities (industry and services), educational and health facilities, transport and better amenities attract people to cities. Urban land use is intensive (multi-storey housing), increasing population density relative to villages.
Because cities concentrate employment, services, infrastructure and attract migrants, leading to more people living per unit area compared to spread-out rural settlements.
- a. 3 and 15
- b. 4 and 16
- c. 3 and 16
- d. 4 and 15
Tamil Nadu has 3 major ports (Chennai, Kamarajar/Ennore, V.O. Chidambaranar/Tuticorin) and 15 minor ports. Hence option (a) is correct.
a