NCERT Solutions for Class 10 Social Science (Contemporary India II) Chapter 7: Lifelines of National Economy (NCERT 2026–27)

These Class 10 Geography Chapter 7 solutions cover Lifelines of National Economy from Contemporary India II, the NCERT Geography textbook for the 2026–27 session. The chapter explains how the four means of transport — roadways, railways, pipelines and waterways — together with airways, ports, communication and trade, act as the lifelines that keep the national economy moving. Below you get the complete Exercises answered verbatim and step by step: all six multiple-choice questions, the 30-word and 120-word questions, plus key terms, extra practice, MCQs, Assertion–Reason questions and FAQs prepared for exam success.

Class: 10 Subject: Social Science (Geography) Book: Contemporary India II Chapter: 7 Topic: Lifelines of National Economy Session: 2026–27
On this page

Class 10 Geography Chapter 7 – Overview

Chapter 7, Lifelines of National Economy, shows that the pace of development of a country depends not only on the production of goods and services but also on their movement over space. Efficient transport, communication and trade are therefore prerequisites for fast development and are complementary to one another. The chapter studies the four major modes of land and water transport in India — roadways (the second-largest road network in the world, classified into Golden Quadrilateral, National Highways, State Highways, District, Other and Border roads), railways (the principal mode for freight and passengers, reorganised into 17 zones), pipelines (a new arrival carrying crude oil, petroleum and natural gas) and waterways (the cheapest mode, with National Waterways and 12 major sea ports). It then explains airways (the fastest mode and the UDAN scheme), communication (postal network, telecom, mass media and Digital India) and international trade, including tourism as a trade and the idea of the balance of trade as an economic barometer.

Key Terms & Concepts

Golden Quadrilateral Super Highways: six-lane super highways linking Delhi–Kolkata–Chennai–Mumbai, with the North–South corridor (Srinagar to Kanniyakumari) and the East–West corridor (Silchar to Porbandar), built to cut time and distance between mega cities; implemented by the National Highways Authority of India (NHAI).

National Highways: the primary road system linking the extreme parts of the country, running in North–South and East–West directions.

Border Roads: roads built and maintained by the Border Roads Organisation (established 1960) in the strategic northern and north-eastern border areas, improving accessibility in difficult terrain.

Railways: the principal mode of transport for freight and passengers and a great integrating force for over 150 years; reorganised into 17 zones, running on multiple gauges over 67,956 km.

Pipelines: the newest transport network, used to carry crude oil, petroleum products and natural gas (and solids as slurry) over long distances; high initial cost but minimal running cost.

Waterways: the cheapest, fuel-efficient and environment-friendly mode, suited to heavy and bulky goods; India has inland navigation waterways and National Waterways declared under the National Waterways Act, 2016.

Major sea ports: India has 12 major ports (such as Deendayal/Kandla, Mumbai, Jawaharlal Nehru, Mormugao, New Mangalore, Cochin, Tuticorin, Chennai, Vishakhapatnam, Paradwip, Shyama Prasad Mookerjee/Kolkata and Haldia) handling about 95% of foreign trade.

Airways: the fastest, most comfortable and prestigious mode, able to cross high mountains, deserts, forests and oceans; the UDAN scheme promotes affordable regional connectivity.

Communication: personal and mass communication — the world’s largest postal network, one of Asia’s largest telecom networks (STD), All India Radio, Doordarshan, newspapers, films and the Digital India programme.

International trade & balance of trade: trade between countries; the balance of trade is the difference between exports and imports — favourable when exports exceed imports and unfavourable when imports exceed exports. It is the economic barometer of a country.

“Exercises” — Full Solutions

All questions below are reproduced verbatim from the NCERT textbook’s end-of-chapter Exercises. Answers are original, written in exam-ready style.

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

ANSWER (b) Silchar and Porbandar. The East–West Corridor of the National Highways Development Project connects Silchar (in Assam) in the east with Porbandar (in Gujarat) in the west.

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

ANSWER (c) Pipeline. Once laid, a pipeline carries crude oil, petroleum products or natural gas continuously from source to destination without repeated loading and unloading, so it rules out trans-shipment losses or delays.

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

ANSWER (b) Maharashtra. The Hazira–Vijaipur–Jagdishpur (H.V.J.) gas pipeline links Mumbai High and Bassein gas fields with fertiliser, power and industrial complexes in western and northern India, passing through Gujarat, Madhya Pradesh and Uttar Pradesh — not Maharashtra.

(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) V.O. Chidambaranar (Tuticorin) (d) Vishakhapatnam

ANSWER (d) Vishakhapatnam. Vishakhapatnam is the deepest landlocked and well-protected port on the east coast; it was originally conceived as an outlet for iron-ore exports.

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

ANSWER (b) Railways. Railways are the principal mode of transport for freight and passengers in India and have become more important to the national economy than all other means of transport put together.

(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 (b) International trade. Trade carried on between two or more countries, through sea, air or land routes, is called international trade.

2. Answer the following questions in about 30 words.

(i) State any three merits of roadways.

ANSWER The construction cost of roads is far lower than that of railways; roads can cross dissected, undulating land and steep gradients such as the Himalayas; and road transport is economical for few persons and small loads over short distances, providing door-to-door service.

(ii) Where and why is rail transport the most convenient means of transportation?

ANSWER Rail transport is most convenient in the vast level land of the northern plains. Their flat terrain, high population density and rich agricultural resources allow easy laying of tracks and ensure heavy passenger and freight traffic, making railways economical there.

(iii) What is the significance of the border roads?

ANSWER Border roads, built by the Border Roads Organisation in the northern and north-eastern border areas, improve accessibility in difficult terrain. They are strategically important for the defence of the country and have promoted the economic development of these remote regions.

(iv) What is meant by trade? What is the difference between international and local trade?

ANSWER Trade is the exchange of goods among people, states and countries, carried on in markets. Local trade is conducted within cities, towns and villages, while international trade is carried on between two or more countries through sea, air or land routes.

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?

ANSWER Goods and services do not move from places of supply to places of demand on their own; this movement needs transport, while trade and communication make it complete. That is why transport, communication and trade are complementary to one another. The pace of development of a country depends on the production of goods and services and on their movement over space, so efficient means of transport are a prerequisite for fast development. Railways carry freight and passengers and have integrated the country for over 150 years; roadways link villages to towns and ports; pipelines carry oil and gas; waterways carry bulky goods cheaply; and airways cover difficult terrain quickly. Communication — the postal network, telephones, radio, television, the press and the internet — binds the people together and spreads information. Because they keep the economy, society and administration alive and connected, the means of transport and communication are rightly 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 International trade is the exchange of goods between countries and is an index of a country’s economic prosperity, so it is called the economic barometer. Over the last fifteen years the nature of India’s international trade has changed greatly in both composition and direction. India now has trade relations with all the major trading blocks and all geographical regions of the world. Among exports, the commodities include gems and jewellery, chemicals and related products, and agriculture and allied products. Among imports are petroleum crude and products, gems and jewellery, chemicals, base metals, electronic items, machinery and agricultural products. A major change is the growing share of the service sector: India has emerged as a software giant and earns large foreign exchange through the export of information technology. Tourism as a trade has also grown remarkably — supported by schemes like Swadesh Darshan 2.0, PRASHAD and the Vibrant Village Programme — promoting heritage, eco, adventure, cultural, medical and business tourism, generating foreign exchange, employment and national integration.

Extra Practice Questions

Short Answer Type Questions

Q1. Why is road transport given an edge over railways in India?

ANSWERRoads are cheaper to build and maintain, can cross dissected and undulating land and high gradients, are economical for small loads over short distances, give door-to-door service, and act as feeders linking railway stations, airports and seaports. These advantages give road transport an edge over railways.

Q2. What are the three important pipeline networks in India?

ANSWERThe three major pipeline networks are: from the oil field in upper Assam to Kanpur via Guwahati, Barauni and Prayagraj; from Salaya in Gujarat to Jalandhar in Punjab via Viramgam, Mathura, Delhi and Sonipat; and the Hazira–Vijaipur–Jagdishpur (HVJ) gas pipeline serving western and northern India.

Q3. Why are waterways considered the cheapest means of transport?

ANSWERWaterways are the cheapest because they use natural rivers, canals and seas, so no costly track or road has to be built. They are fuel-efficient and environment-friendly and are most suitable for carrying heavy and bulky goods over long distances at low cost.

Q4. Mention any two problems faced by rail transport in India.

ANSWERMany passengers travel without tickets, causing loss of revenue; thefts and damaging of railway property have not stopped; and people often stop trains and pull the chain unnecessarily. These acts cause heavy damage and prevent trains from running on schedule.

Q5. What is the UDAN scheme?

ANSWERUDAN (Ude Desh ka Aam Nagrik), under the Regional Connectivity Scheme, was launched by the Ministry of Civil Aviation to jump-start the regional aviation market. It encourages airlines to operate on regional and remote routes and makes air travel affordable for the common citizen.

Long Answer Type Questions

Q1. Describe the classification of roads in India on the basis of their capacity.

ANSWEROn the basis of capacity, Indian roads are placed in six classes. Golden Quadrilateral Super Highways are six-lane highways linking Delhi, Kolkata, Chennai and Mumbai, along with the North–South and East–West corridors, implemented by NHAI to reduce time and distance between mega cities. National Highways link the extreme parts of the country and form the primary road system. State Highways connect a state capital with its district headquarters. District Roads connect district headquarters with other places in the district. Other Roads are rural roads linking villages with towns, given a boost under the Pradhan Mantri Gram Sadak Yojana so that every village is connected by an all-season motorable road. Border Roads, built by the Border Roads Organisation in border areas, are strategically important and aid the economic development of difficult terrain.

Q2. Discuss the importance and problems of railways as the principal mode of transport in India.

ANSWERRailways are the principal mode of transport for freight and passengers in India and have been a great integrating force for more than 150 years. They enable people to conduct business, sightseeing and pilgrimage and carry goods over long distances, binding the economic life of the country and accelerating the development of industry and agriculture. The Indian Railways, the largest public sector undertaking, is now organised into 17 zones and runs on multiple gauges over 67,956 km; the Konkan railway along the west coast has eased movement in that important economic region. However, railways face problems: the rugged Himalayas, sandy plains of western Rajasthan, swamps of Gujarat and forested tracts of central India hinder track laying; and ticketless travel, theft and damage to property, unnecessary chain-pulling and stopping of trains cause heavy losses and delays.

Q3. Explain the role of communication in the modern Indian economy.

ANSWERCommunication allows long-distance contact without the physical movement of people, and it has become very rapid in modern times. India has the largest postal network in the world, handling first-class mail (cards and envelopes airlifted between stations) and second-class mail (book packets, newspapers and periodicals carried by surface mail); six mail channels — Rajdhani, Metro, Green, Business, Bulk Mail and Periodical — speed up delivery in large towns. India also has one of the largest telecom networks in Asia, with uniform-rate STD facilities extended to villages by linking space and communication technology. Mass communication — All India Radio (Akashwani), Doordarshan, newspapers in about 100 languages, and the world’s largest feature-film industry — provides entertainment and spreads awareness of national programmes. The Digital India programme aims to make technology central to a knowledge-based transformation of the country.

MCQs & Assertion–Reason

1. India has the second-largest road network in the world, aggregating to about:

(a) 23 lakh km    (b) 42 lakh km    (c) 62.16 lakh km    (d) 90 lakh km

2. The North–South corridor links:

(a) Silchar and Porbandar    (b) Srinagar and Kanniyakumari    (c) Delhi and Mumbai    (d) Kolkata and Chennai

3. The Border Roads Organisation was established in the year:

(a) 1947    (b) 1953    (c) 1960    (d) 1972

4. The first train in India steamed off in 1853 from:

(a) Mumbai to Thane    (b) Howrah to Delhi    (c) Chennai to Bengaluru    (d) Delhi to Agra

5. The Indian Railway is now reorganised into how many zones?

(a) 9    (b) 12    (c) 16    (d) 17

6. Which port is the premier iron-ore exporting port of the country?

(a) Mormugao    (b) Cochin    (c) Chennai    (d) Haldia

7. National Waterway No. 1 lies on the Ganga river between:

(a) Sadiya and Dhubri    (b) Prayagraj and Haldia    (c) Kottapuram and Kollam    (d) Kakinada and Puducherry

8. About what percentage of India’s trade volume is moved by sea?

(a) 50 per cent    (b) 68 per cent    (c) 80 per cent    (d) 95 per cent

9. The cheapest and most fuel-efficient, environment-friendly mode of transport is:

(a) Railways    (b) Roadways    (c) Waterways    (d) Airways

10. When the value of a country’s exports exceeds the value of its imports, it is called:

(a) unfavourable balance of trade    (b) favourable balance of trade    (c) internal trade    (d) local trade

Answer key: 1-(c), 2-(b), 3-(c), 4-(a), 5-(d), 6-(a), 7-(b), 8-(d), 9-(c), 10-(b).

For each Assertion–Reason question, choose: (A) Both true and the Reason correctly explains the Assertion; (B) Both true but the Reason is not the correct explanation; (C) Assertion true, Reason false; (D) Assertion false, Reason true.

A-R 1. Assertion: Pipeline transport rules out trans-shipment losses or delays.

Reason: A pipeline carries oil or gas continuously from source to destination without repeated loading and unloading.

A-R 2. Assertion: Road transport has an edge over railways in hilly and dissected areas.

Reason: Roads can negotiate higher gradients and cross mountains such as the Himalayas.

A-R 3. Assertion: Railways could be laid easily everywhere in India.

Reason: High relief, sandy plains, swamps and forested tracts posed obstacles to laying railway lines.

A-R 4. Assertion: Waterways are most suitable for carrying heavy and bulky goods.

Reason: Waterways are a costly mode that requires building expensive tracks.

A-R 5. Assertion: International trade is considered the economic barometer of a country.

Reason: The advancement of a country’s international trade is an index of its economic prosperity.

Answer key: 1-(A), 2-(A), 3-(D), 4-(C), 5-(A).

Exam Tips & Common Mistakes

How to score full marks in this chapter

Memorise the six classes of roads and the two corridors (North–South: Srinagar–Kanniyakumari; East–West: Silchar–Porbandar). Learn the three pipeline networks and the route of NW No. 1 to NW No. 5. Be ready to match each major port with its speciality (Mormugao – iron ore; Vishakhapatnam – deepest landlocked; Kandla/Deendayal – first post-Independence tidal port; Kolkata – riverine). For the balance-of-trade question, clearly state the favourable vs unfavourable distinction. In 120-word answers, write a short intro, the main points in clear sentences and a one-line conclusion.

Common mistakes to avoid

  • Confusing the East–West corridor (Silchar–Porbandar) with the North–South corridor (Srinagar–Kanniyakumari).
  • Thinking Maharashtra is on the H.V.J. pipeline — it passes through Gujarat, Madhya Pradesh and Uttar Pradesh.
  • Calling roadways the most important mode — railways are the principal mode in India.
  • Mixing up favourable (exports > imports) and unfavourable (imports > exports) balance of trade.
  • Forgetting that pipelines (not waterways) reduce trans-shipment losses and delays.
  • Writing about local trade when the question asks for international trade, or leaving map-based questions unattempted.

Frequently Asked Questions

What is Chapter 7 of Class 10 Geography about?

Chapter 7, Lifelines of National Economy, from Contemporary India II, explains how transport (roadways, railways, pipelines, waterways and airways), ports, communication and international trade act as the lifelines that keep India’s economy moving, and why efficient transport and communication are prerequisites for fast development.

Which two locations are connected by the East–West corridor?

The East–West corridor connects Silchar in Assam (in the east) with Porbandar in Gujarat (in the west). The North–South corridor, by contrast, links Srinagar in Jammu & Kashmir with Kanniyakumari in Tamil Nadu.

Why are railways called the most important mode of transport in India?

Railways are the principal mode of transport for both freight and passengers, have integrated the country for over 150 years, and bind the economic life of the nation while accelerating the development of industry and agriculture — making them more important to the national economy than all other means put together.

← Chapter 6: Manufacturing Industries Geography (all chapters) →
Scroll to Top