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World Geography & Facts for Exams

Continents and oceans, world records of nature, important straits and boundary lines, India's neighbours with capitals and currencies, and a short list of famous books.

Lessons in this module

1

Continents, Oceans and World Records

Lesson • 5 quiz questions

Read notes ↓
2

Straits, Canals and Boundary Lines

Lesson • 5 quiz questions

Read notes ↓
3

Countries, Capitals, Currencies and Famous Books

Lesson • 5 quiz questions

Read notes ↓

Lesson notes

1. Continents, Oceans and World Records

Static geography questions appear in almost every competitive exam. Start with the big picture: seven continents, five oceans, and the 'largest, longest, highest' facts that are asked again and again.

Continents

  • Seven continents, from largest to smallest: Asia, Africa, North America, South America, Antarctica, Europe, Australia (Oceania).
  • Asia is the largest and most populous continent. Australia is the smallest.
  • Antarctica has no permanent population; it is governed by the Antarctic Treaty (1959). India's research stations there are Maitri and Bharati.
  • Africa has the most countries (54 UN member states).

Oceans

  • Five oceans: Pacific, Atlantic, Indian, Southern and Arctic.
  • The Pacific is the largest and deepest. Its deepest point is the Challenger Deep in the Mariana Trench, nearly 11,000 metres deep.
  • The Atlantic is the second largest. The Arctic is the smallest and shallowest.
  • The Indian Ocean is the only ocean named after a country.

Largest, longest, highest

  • Highest mountain: Mount Everest (8,849 m, Nepal–China border), as measured jointly by Nepal and China in 2020.
  • Longest river: the Nile (Africa). The Amazon (South America) carries the most water.
  • Largest country by area: Russia. Smallest: Vatican City. Most populous: India (since 2023, by UN estimates).
  • Largest hot desert: the Sahara. Antarctica is technically the largest desert overall (a cold desert).
  • Largest island: Greenland. Largest lake: Caspian Sea. Deepest lake: Lake Baikal (Russia). Largest freshwater lake by area: Lake Superior.
  • Highest waterfall: Angel Falls, Venezuela.
Quick facts
Largest continent
Asia
Smallest continent
Australia
Largest and deepest ocean
Pacific (Mariana Trench)
Smallest ocean
Arctic
Highest mountain
Mount Everest, 8,849 m
Longest river
Nile
Largest country / smallest
Russia / Vatican City
Largest island
Greenland
Deepest lake
Lake Baikal
Highest waterfall
Angel Falls, Venezuela

💡 Watch the wording: 'longest river' is the Nile, but 'largest river by volume of water' is the Amazon.

📝 5-question quiz on this lesson: enrol free to take it and track your score.

2. Straits, Canals and Boundary Lines

Narrow sea routes (straits) and canals control much of world trade, so exams love them. Boundary lines drawn by colonial officials still shape India's borders today.

Important straits

  • Palk Strait: between India (Tamil Nadu) and Sri Lanka.
  • Strait of Malacca: between the Malay Peninsula and Sumatra (Indonesia); joins the Andaman Sea (Indian Ocean) with the South China Sea. One of the world's busiest shipping lanes.
  • Strait of Hormuz: between Iran and Oman; joins the Persian Gulf with the Gulf of Oman. A large share of the world's oil passes through it.
  • Bab-el-Mandeb: between Yemen and Djibouti/Eritrea; joins the Red Sea with the Gulf of Aden.
  • Strait of Gibraltar: between Spain and Morocco; joins the Atlantic Ocean with the Mediterranean Sea.
  • Bering Strait: between Russia and Alaska (USA). Bosporus: in Istanbul, Türkiye, joins the Black Sea with the Sea of Marmara. Dover Strait: between England and France.

Canals and channels

  • Suez Canal (Egypt), opened 1869: joins the Mediterranean Sea with the Red Sea, the shortest sea route between Europe and Asia.
  • Panama Canal (Panama), opened 1914: joins the Atlantic and Pacific Oceans.
  • Ten Degree Channel: separates the Andaman Islands from the Nicobar Islands.
  • Nine Degree Channel: separates Minicoy from the main Lakshadweep islands. Eight Degree Channel: separates Minicoy (India) from the Maldives.

Boundary lines

  • Radcliffe Line: the India–Pakistan border (and the then East Pakistan, now Bangladesh) drawn by Sir Cyril Radcliffe in 1947.
  • McMahon Line: the line between India (Arunachal Pradesh) and Tibet, drawn at the Simla Convention of 1914 by Sir Henry McMahon. China does not accept it.
  • Durand Line: the Afghanistan–Pakistan border, agreed in 1893 by Sir Mortimer Durand. Afghanistan does not formally recognise it.
  • Line of Control (LoC): the de facto line between Indian and Pakistani-administered parts of Jammu and Kashmir, defined after the Simla Agreement of 1972. Line of Actual Control (LAC): the de facto India–China line.
  • 38th Parallel: North Korea–South Korea. 49th Parallel: USA–Canada (in large part). Oder–Neisse Line: Germany–Poland. Maginot Line: French fortifications facing Germany before WWII.
Quick facts
Palk Strait
India – Sri Lanka
Strait of Hormuz
Iran – Oman; Persian Gulf to Gulf of Oman
Strait of Gibraltar
Spain – Morocco; Atlantic to Mediterranean
Suez Canal
1869; Mediterranean to Red Sea
Panama Canal
1914; Atlantic to Pacific
Ten Degree Channel
Andaman – Nicobar
Radcliffe Line
India – Pakistan / Bangladesh, 1947
McMahon Line
India – China (Tibet), 1914
Durand Line
Afghanistan – Pakistan, 1893
38th Parallel
North Korea – South Korea

💡 Match line to neighbour: Radcliffe = Pakistan and Bangladesh, McMahon = China, Durand = Afghanistan–Pakistan (not an Indian border).

📝 5-question quiz on this lesson: enrol free to take it and track your score.

3. Countries, Capitals, Currencies and Famous Books

Questions on capitals and currencies, especially of India's neighbours, are very common. This lesson also lists major headquarters for quick revision and a short set of famous books and authors linked to world history.

India's neighbours

  • India counts land borders with seven countries: Bangladesh (longest border), China, Pakistan, Nepal, Myanmar, Bhutan and Afghanistan (the Afghanistan border lies in the part of Jammu and Kashmir under Pakistani control, which India claims). Sri Lanka and the Maldives are sea neighbours.
  • Pakistan: Islamabad, Pakistani rupee. China: Beijing, renminbi (yuan). Afghanistan: Kabul, afghani.
  • Nepal: Kathmandu, Nepalese rupee. Bhutan: Thimphu, ngultrum. Bangladesh: Dhaka, taka.
  • Myanmar: Naypyidaw, kyat. Sri Lanka: Sri Jayawardenepura Kotte (official/legislative capital) and Colombo (commercial capital), Sri Lankan rupee. Maldives: Malé, rufiyaa.
  • Indian states bordering Nepal: Uttarakhand, Uttar Pradesh, Bihar, West Bengal and Sikkim.

Other capitals and currencies often asked

  • Japan: Tokyo, yen. Russia: Moscow, rouble. United Kingdom: London, pound sterling. USA: Washington, D.C., US dollar.
  • Brazil: Brasília, real. Australia: Canberra, Australian dollar. Canada: Ottawa, Canadian dollar. Türkiye: Ankara, lira.
  • Saudi Arabia: Riyadh, riyal. UAE: Abu Dhabi, dirham. Iran: Tehran, rial. Nigeria: Abuja, naira. South Africa: Pretoria (executive capital), rand.
  • Euro area: the euro is used by 21 EU countries; Bulgaria adopted it on 1 January 2026.

Famous books and authors (world history)

  • 'The Prince': Niccolò Machiavelli. 'The Wealth of Nations' (1776): Adam Smith. 'The Social Contract': Rousseau.
  • 'Das Kapital': Karl Marx. 'On the Origin of Species' (1859): Charles Darwin. 'War and Peace': Leo Tolstoy.
  • 'A Tale of Two Cities' (set in the French Revolution): Charles Dickens. 'Animal Farm' and 'Nineteen Eighty-Four': George Orwell, who was born in Motihari, Bihar.
  • 'The Diary of a Young Girl': Anne Frank. 'Long Walk to Freedom': Nelson Mandela. 'The Discovery of India': Jawaharlal Nehru.
Quick facts
Bhutan
Thimphu; ngultrum
Bangladesh
Dhaka; taka
Myanmar
Naypyidaw; kyat
Maldives
Malé; rufiyaa
Afghanistan
Kabul; afghani
Longest land border of India
With Bangladesh
Brazil / Australia / Canada
Brasília / Canberra / Ottawa
The Wealth of Nations
Adam Smith, 1776
Long Walk to Freedom
Nelson Mandela

💡 Capital trap: the largest city is often NOT the capital. Australia = Canberra (not Sydney), Canada = Ottawa (not Toronto), Brazil = Brasília (not Rio), Türkiye = Ankara (not Istanbul).

📝 5-question quiz on this lesson: enrol free to take it and track your score.

Other modules in General Knowledge: India & the World, The Story So Far

Ancient IndiaFREE PREVIEW → Medieval IndiaFREE PREVIEW → Colonial Rule and the Freedom StruggleFREE PREVIEW → The Constitution of IndiaFREE PREVIEW → How India Is GovernedFREE PREVIEW → India's Economic Journey and PoliciesFREE PREVIEW → Post-Independence Milestones and PolicyFREE PREVIEW → Revolutions & the Modern WorldFREE PREVIEW → World Wars & the Cold WarFREE PREVIEW → The United Nations & International OrganisationsFREE PREVIEW → The 21st-Century WorldFREE PREVIEW → Final AssessmentFREE PREVIEW →

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