10th Social Science - Book Back Answers - Geography Unit 7

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Tamil Nadu Board 10th Standard Social Science - Geography Unit 7: Book Back Answers and Solutions

This post covers the book back answers and solutions for Unit 7 – Geography from the Tamil Nadu State Board 10th Standard Social Science textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

By going through this material, you’ll gain a strong understanding of Geography Unit 7 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following
2 Mark Questions: Answer briefly
3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 10 students! Prepare well and aim for top scores. Thank you!

Unit 7: Human Geography of Tamil Nadu

I. Choose the correct answer.

1. The delta which is known as Granary of South India is _____.
a) Cauvery delta
b) Mahanadi delta
c) Godavari delta
d) Krishna delta
Answer Key:
a) Cauvery delta

2. Second staple food of the people of Tamil Nadu is _____.
a) Pulses
b) Millets
c) Oilseeds
d) Rice
Answer Key:
b) Millets

3. A major hydro-electric power project of Tamil Nadu is _____.
a) Mettur
b) Papanasam
c) Sathanur
d) Thungabadra
Answer Key:
a) Mettur

4. Number of major and minor ports in Tamil Nadu are _____.
a) 3 and 15
b) 4 and 16
c) 3 and16
d) 4 and 15
Answer Key:
a) 3 and 15

II. Fill in the blanks.

1. Agriculture of Tamil Nadu constitutes _____ % of its economy.
2. Sathanur dam is constructed across the river _____.
3. _____ is the third largest airport in India after Mumbai and Delhi.
4. The difference between the value of exports and imports is called ____.
Answer Key:
1. 21
2. Thenpennai
3. Chennai
4. balance of trade

III. Match the following.

1	Bauxite	Salem
2	Gypsum	Servaroy hills
3	Iron ore	Coimbatore
4	Limestone	Tiruchirapalli

Answer Key:

1	Bauxite	Servaroy hills
2	Gypsum	Tiruchirapalli
3	Iron ore	Salem
4	Limestone	Coimbatore

IV. Questions 1-2 are assertion and reasoning type.

1. Assertion (A) : Coimbatore, Tiruppur, Erode, Karur and Salem region is called as The Textile Valley of Tamil Nadu.
Reason (R) : They contribute a major share to the state’s economy through textiles.
(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
Answer Key:
(a) Both (A) and (R) are true and (R) explains (A)

2. Assertion (A) : The Nilgiris is the least populated district of Tamil Nadu.
Reason (R) : It is located in the western most part of Tamil Nadu.
(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 false
Answer Key:
(b) Both (A) and (R) are true but, (R) does not explain (A)

V. Answer the following in brief.

1. What are the cropping seasons of Tamil Nadu.
Answer Key:

Sornavari or Chithirai Pattam:
1. April and May - sowing season.
2. August and September - Harvesting season.
3. Millets and Cotton - Major crops.

Samba or Adipattam:
1. July and August - sowing period.
2. January and February - Harvesting period
3. Paddy and Sugarcane - Major crops.

Navarai:
1. November and December - Sowing period
2. February and March - Harvesting period
3. Fruits, Vegetables - Major crops.

2. Why is Coimbatore called the Manchester of South India?
Answer Key:
1. In Coimbatore region a large number of textile mills and industries are situated.
2. So it is called the Manchester of TamilNadu.
3. Manchester in England (Like Coimbatore in Tamil Nadu) is known for its cotton textile industries.

3. Name the important multipurpose projects of Tamil Nadu.
Answer key:
Mettur dam, Bhavani Sagar dam, Amaravathi dam, Sathanur dam, Papanasam dam are the important multipurpose projects of Tamil Nadu.

4. What is MRTS?
Answer Key:
1. Mass Rapid Transport System is a well established railway system (Suburban railway network) in Chennai.
2. At present, MRTS is developing a Metro System with its first underground services since May, 2017.

5. List out the air ports and sea ports of Tamil Nadu.
Answer key:
1. International airports : Chennai, Coimbatore, Madurai, Tiruchirappalli.
2. Domestic airports : Toothukudi, Salem.
3. Sea ports : Chennai, Ennore, Tuticorin, Nagappattinam

VI. Distinguish between the following.

1. Food crops and non- food crops.
Answer Key:

Food crops	Non- food crops
They are cultivated for human consumption.	They are cultivated for commercial purpose.
They include rice, pulses, cereals and millets.	They include cotton, sugarcane and jute.

2. Surface water and ground water.
Answer Key:

Surface water	Ground water
Includes river basin tanks and reservoirs.	Includes tube wells and open wells.
Total extent is about 24,864 km.	Total extent is 22,424 km.
Already 95% of surface water has been used.	More than 80% of ground water has already been used up.

VII. Give reasons for the following.

1. Farmers switch over from inorganic to organic farming.
Answer Key:
1. In organic farming, synthetic fertilizers, growth regulator and live stock feed additives are not used.
2. Crop rotation, crop residues, animal manure, organic wastes and biological pest control methods are adopted.

2. Cities are densely populated than the villages.
Answer Key:
Cities will have all facilities like markets, hospitals, schools, colleges, libraries, transport, industries. So, they are densely populated.

VIII. Answer the following in a paragraph.

1. Write about the plantation farming of Tamil Nadu.
Answer Key:

1. Plantation crops are cultivated in the hill slopes and in large estates.
2. Tea, Coffee, Cashew, Rubber and Cinchona are included in this.

Tea:
1. Tamil Nadu ranks second in area and production of tea in India next to Assam.
2. Nilgiris and Coimbatore are famous for tea production.

Coffee:
1. TamilNadu ranks second after Karnataka, in coffee production.
2. Coffee is grown in Western and Eastern Ghats.
2. Yercaud, Kolli hills and Kodaikanal also produce coffee.
4. They are also found in Dindigul, Madurai, Theni and Salem districts.

Rubber:
Kanyakumari District has large rubber plantations.

Pepper:
The slopes of Western Ghats and Eastern Ghats are places where pepper is cultivated.

Cashew:
Cashew is cultivated largely in Cuddalore district.

2. Give an account on water resources of Tamil Nadu.
Answer key:
1. Water is the precious gift of nature not only to humankind but also for millions of other species living on the earth.
2. Tamil Nadu has 6% of India’s population but it has only 2.5% water resources.
3. Water is used for human and animal consumption, irrigation and industries.
4. Tamil Nadu heavily depends on monsoon rains.
5. Tamil Nadu gets 47% of rainfall from North East Monsoon and 35% from South West Monsoon.
6. It has also 14% rain in summer and 4% in winter.

Surface water Resources:
1. Rivers, Reservoirs and tanks come under it.
2. The state has about 24,864 mcm of surface water.
3. Tamil Nadu has 17 major river basins, 81 reservoirs and 41,262 tanks.
4. The surface water has almost depleted completely.

Ground water Resoruces:
1. Multipurpose river valley projects are used for many purposes apart from agriculture and hydropower generation.
2. Mettur dam, Bhavani Sagar dam, Sathanur dam, Vaigai dam and Papanasam dam are some multipurpose projects of TamilNadu.
3. Water resource management is an activity which involves the optimum use of water.
4. TamilNadu is entirely dependent on monsoon rains for water.
5. So it is important to save water for us and the future generation.

3. Bring out the mineral distribution in Tamil Nadu.
Answer Key:
1. Important minerals of Tamil Nadu are Vermiculite magnetite, dumite, rutile, garnet, Molybdenum, ilmenite.
2. Lignite is available in Neyveli. Coal is available in Ramanathaspuram.
3. Oil and gas is found in Cauvery basin.
4. Iron ore is found in Kanjamalai in Salem and Kalrayanmalai in Tiruvannamalai.
6. Bauxite is found in Servarayan Hills, Kotagiri, Udagamangalam, Palani and Kollimalai areas.
7. Gypsum is available in Tiruchirappalli, Tirunelveli, Thoothukudi and Virudhu Nagar. Ilmenite and rutile are found in Kanyakumari districts.
8. Limestone is available in Coimbatore, Cuddalore, Dindigul, Kancheepuram,
Karur, Madurai, Nagapattinam, Namakkal, Perambalur, Ramanathapuram, Salem and Tiruvallur districts.
9. Magnesite is found in Coimbatore, Dharmapuri, Karur, Nilgiris, Salem and Tirunelveli Districts.
10. Feldspar, Quartz, Copper and lead are also found in some parts of the state.

4. Explain the different modes of transport available in Tamil Nadu.
Answer Key:

There are different modes of transport available in Tamil Nadu.
They are:

Roadways:
1. TamilNadu has a total length of 1,67,000 of which 60,628 km are maintained by State Highways Department.
2. They include National Highways, State Highways, Roads by Corporation, Panchayat etc.
3. NH44 is the longest national highway in TamilNadu.
4. It runs from Hosur to Kanyakumari and NH - 785 is the shortest national highway in Tamil Nadu runs from Madural to Thuvarankuruchi.

Railways:
1. TamilNadu has the Southern Railway Head Quarters in Chennai with well developed Railway Stations.
2. Southern Railways serve a major part of the southern peninsula.
3. Chennai has well established MRTS. (Mass Rapid Transport System) At present, Metro Railways are being operated with its first underground stretch since May 2017.

Airways:
1. The four major airports in TamilNadu are Chennai, Coimbatore, Madurai and Tiruchirappalli.
2. Tamil Nadu also has domestic airports at Tuticorin and Salem.
3. Chennai International Airport is currently the “3rd” largest airport in India after Mumbai and Delhi.

Water ways:
1. Three Major ports in TamilNadu - Chennai, Ennore and Thuthookudi.
(Among these Chennai is an artificial harbour) Nagapattinam - Intermediate port.
2. There are 15 minor ports.TamilNadu Maritime Board manages all minor ports.
3. Chennai port is the second largest port in India which handles cargo.

IX. Map Exercise.

1. Mark the areas of major crops, minerals, dams, airports and seaports.
Answer Key:
(a) Areas of Major Crops in Tamil
1. Paddy – Thanjavur, Tiruvarur, Tirunelveli
2. Millets – Coimbatore, Dharmapuri, Vellore, Perambalur.
3. Pulses – Coimbatore, Tiruvarur, Nagapattinam, Thoothukudi, Krishnagiri.
4. Oil seeds – Vellore, Tiruvannamalai, Villupuram, Salem, Pudukottai.
5. Sugarcane – Kancheepuram, Tiruvallur, Cuddalore, Erode, Tirunelveli.
6. Cotton – Coimbatore, Salem, Madurai, Ramanathapuram, Virudhunagar.
7. Tea and coffee – Nilgiris, Kodaikanal, Kanyakumari, Anaimalai hills.

(b) Distribution of minerals:

(c) Dams:

(d) Seaports and airports: