NCERT Solutions for class 10th Social Science Chapter 21 Lifelines of Natural Economy

Intext Questions

On Page 82

Question 1. Find out places linked by the National Highway 2 and 3.

Answer : National Highway 2 runs from Delhi to Kolkata. Some of the places linked by this highway are: Faridabad in Haryana, Mathura, Agra, Etawah, Kanpur, Allahabad, Varanasi and Mughalsarai in Uttar Pradesh, Mohania, Sasaram, Dehri on Sone and Aurangabad in Bihar, Bar hi and Dhanbad in Jharkhand and Asansol, Durgapur, Bardhaman and Kolkata in Paschim Banga.
National Highway 3 runs from Agra to Mumbai. Some of the places linked by this highway are Dholpur in Rajasthan, Morena, Gwalior, Shivpuri, Guna, Indore and Mhow in Madhya Pradesh, and Dhule, Melegaon, Nashik, Igatpuri, Shahpur, Bhiwandi, Thane and Mumbai in Maharashtra.

On Page 85

Question 1. Find out the current railway zones and their headquarters. Also locate the headquarters of railway zones on the map of India.

Answer : Railway zones and their headquarters

S.N.Name of Railway ZoneHeadquarters
1.Central RailwayMumbai
2.Eastern RailwayKolkata
3.Northern RailwayNew Delhi
4.North Eastern RailwayGorakhpur
5.North-East Frontier RailwayGuwahati
6.Southern RailwayChennai
7.South Central RailwaySecunderabad
8.South Eastern RailwayKolkata
9.Western RailwayMumbai
10.East Central RailwayHajipur
11.East Central RailwayBhubaneswar
12.North Western RailwayAllahabad
13.North Western RailwayJaipur
14.South-East Central RailwayBilaspur
15.South Western RailwayHubli
16.West Central RailwayJabalpur
The headquarter locations are shown on the map below

On Page 88

Question 1. Why is air travel prefered in the North-Eastern states?

Answer : Because it can easily cover difficult terrain present in the North-Eastern states of India like big and wide rivers ( e.g., Brahmaputra), dissected relief (many river valleys between places), dense forests, frequent flooding and also some international frontiers (Bangladesh.)

Question 2. Find out the name of the countries connected by Indian Airlines.

Answer : Before it was merged with Air India in 2007, Indian Airlines covered the following countries

  • Nepal
  • Bhutan
  • Pakistan
  • Bangladesh
  • Thailand
  • Malaysia
  • Singapore
  • Sri Lanka
  • Kuwait
  • Qatar
  • UAE

Question 1. Multiple choice questions.
(i) Which two of the following extreme locations are connected by the East-West corridor?
(a) Mumbai and Nagpur
(b) Silchar and Porbandar
(c) Mumbai and Kolkata
(d) Nagpur and Siligudi

(ii) Which mode of transportation reduces trans-shipment losses and delays?
(a) Railways
(b) Roadways
(c) Pipeline
(d) Waterways

(iii) Which one of the following states is not connected with the HVJ pipeline?
(a) Madhya Pradesh
(b) Maharashtra
(c) Gujarat
(d) Uttar Pradesh

(iv) Which one of the following ports is the deepest land-locked and well-protected port along the East coast?
(a) Chennai
(b) Paradwip
(c) Tuticorin
(d) Vishakhapatnam

(v) Which one of the following is the most important mode of transportation in India?
(a) Pipeline
(b) Railways
(c) Roadways
(d) Airways

(vi) Which one of the following terms is used to describe trade between two or more countries?
(a) Internal trade
(b) International trade
(c) External trade
(d) Local trade

Answer :
(i) (b) East-West corridor connect Silcher and Porbandar.
(ii) (c) Pipeline reduces trans-shipment losses and delays .
(iii) (b) HVJ passes through Gujarat, Maharashtra and Uttar Pradesh not through Madhya Pradesh.
(iv) (d) Vishakhapatnam is the deepest land-locked and well protected port along the Eastern coast of India. Paradwip, Tuticorin and Chennai are not the deepest land-locked ports on East coast.
(v) (b) Railway is useful for carrying heavy and bulky goods. It also plays an important role in economy also.
(vi) (b) International trade is used to describe trade between two or more countries.

Question 2. Answer the following questions in about 30 words.
(i) State any three merits of roadways.
(ii) Where and why is rail transport the most convenient means of transportation?
(iii) What is the significance of the border roads?
(iv) What is meant by trade? What is the difference between international and local trade?

Answer :
(i) Merits of Roadways
(a) It provides us door to door service.
(b) It is easier to construct roads at affordable or less rates.
(c) It provides feeder services to Iink other means of transportation.

(ii) Rail transport is the most convenient means of transpotation in the Northern plain, because these plains are densely polulated , rich in agriculture resources and construction of railways is easy due to gentle slope of the land.

(iii) In 1960, Border Road Organisation (BRO) was established to maintain and construct border roads.
(a) These roads have improved accessibility in border areas or areas having difficult terrain.
(b) They helped in the economic development of these areas.

(iv) Trade refers to exchange of goods among the people, states and countries . Difference between International and Local Trade International trade is carried out between two or more countries while local trade is carried in between the cities, towns and villages at state level or between the different states of a country.

Question 3. Answer the following questions in about 120 words.
(i) Why are the means of transportation and communication called the lifelines of a nation and its economy?
(ii) Write a note on the changing nature of the international trade in the last fifteen years.

Answer :
(i) Means of transportation and communication are called lifelines of nation and its economy because
(a) An efficient and well developed system of transport is essential for the utilisation of the natural resources
(b) They are the very basis of industries and trade of a country.
(c) Just as the arteries supply blood to different organs of the body, a well developed system of transport maintains the movement of persons and products from one region to another region of the country.
(d) Means of communication help in sending and recieving messages and play an important role in creating awareness among the people at national level. These help in defending the independence and the national unity of a country.

(ii) International trade has undergone major changes during the last 15 years. Exchange of commodities and goods is being augmented and superseded by exchange of information and knowledge. India has emerged as a software giant at the international level and is earning a large amount of foreign exchange through the export of information technology products.


Start your search vertically, horizontally or diagonally and reachvarious destinations across the country!

  1. Northern terminal of the North-South corridor.
  2. The name of National Highways No. 2.
  3. The headquarter of the Southern Railway Zone.
  4. The rail gauge with a track width of 1.676 m.
  5. The Southern terminal of the National Highway No. 7.
  6. A Riverine Port.
  7. Busiest railway junction in Northern India.

Answer :

  1. Srinagar
  2. Sher Shah Suri Marg
  3. Chennai
  4. Broad Gauge
  5. Kanyakumari
  6. Kolkata
  7. Mughal Sarai
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