World GK 2026: Important Facts for Competitive Exams

 

World GK 2026: Important Facts for Competitive Exams

Last Updated: 09 October 2026, 09:44 AM IST | Reviewed by Vijay Sah

World GK is an important subject for SSC, UPSC, Railway, Banking, Defence, Police and State PSC examinations. It covers countries and their capitals, continents, oceans, major rivers, mountains, deserts, international organisations, famous landmarks and important geographical facts.

This World GK guide for 2026 brings together essential facts for competitive exam preparation. It includes country-capital pairs, world geography, international institutions, important discoveries and practice MCQs to help students revise efficiently.

Key points at a glance: The world is commonly divided into seven continents and five oceans. The United Nations has 193 Member States and six official languages. The Pacific Ocean is the largest ocean, Asia is the largest continent by area, and Mount Everest is the world's highest mountain above sea level.

Quick Links: Quick Facts | Continents | Oceans | Countries and Capitals | World Geography | International Organisations | Landmarks and Wonders | Exam Traps | One-Liners | MCQs | Quick Revision | FAQs

World GK: Quick Facts

Topic	Fact
Number of continents	Seven in the commonly taught model
Number of oceans	Five in the modern commonly used classification
Largest continent	Asia
Smallest continent	Australia, in the seven-continent model
Largest ocean	Pacific Ocean
Smallest ocean	Arctic Ocean
Highest mountain above sea level	Mount Everest
Largest hot desert	Sahara Desert
Largest desert overall	Antarctic Desert
Largest country by area	Russia
Smallest sovereign state by area	Vatican City
Largest country by population	India, according to current UN population estimates
United Nations established	24 October 1945
UN Member States	193
UN official languages	Six

These facts provide a starting point for World GK revision. In examinations, pay attention to the exact wording of a question, especially when it distinguishes the largest desert from the largest hot desert or a country's land area from its population.

Seven Continents of the World

A continent is a major landmass traditionally used to divide the Earth's land surface into geographical regions. The seven-continent model is widely taught in Indian schools and competitive exam preparation.

Continent	Important facts
Asia	Largest continent by area; includes India, China, Japan and Saudi Arabia.
Africa	Second-largest continent by area; crossed by the Equator and home to the Sahara Desert.
North America	Includes Canada, the United States and Mexico.
South America	Home to the Andes Mountains and much of the Amazon Basin.
Antarctica	Cold southern continent, largely covered by ice; has no permanent native population.
Europe	Includes countries such as France, Germany, Italy and Spain.
Australia	The smallest continent in the seven-continent model.

Important continent-related facts

• Asia: The world's largest and most populous continent.
• Africa: Contains the Equator and both the Tropic of Cancer and Tropic of Capricorn.
• South America: The Andes form a major mountain chain along its western side.
• Europe and Asia: Together they form the large landmass commonly called Eurasia.
• Antarctica: The Antarctic Treaty system governs international cooperation on the continent; it is not owned by any one nation.
• Australia and Oceania: Australia is a continent, while Oceania is a broader geographical region that includes many Pacific islands.

Exam Point: Some educational systems use six-continent models, combining Europe and Asia or combining North and South America. For Indian competitive exams, use the seven-continent model unless the question specifies otherwise.

Five Oceans of the World

The five-ocean classification recognises the Pacific, Atlantic, Indian, Southern and Arctic Oceans. These bodies of salt water influence weather, trade, marine ecosystems and the global climate.

Ocean	Important fact
Pacific Ocean	Largest and deepest ocean; the Mariana Trench lies within it.
Atlantic Ocean	Second-largest ocean; separates the Americas from Europe and Africa.
Indian Ocean	Third-largest ocean; lies between Africa, Asia, Australia and the Southern Ocean region.
Southern Ocean	Surrounds Antarctica and is associated with the Antarctic Circumpolar Current.
Arctic Ocean	Smallest and shallowest of the five oceans; lies around the Arctic region.

Important seas and straits

• Mediterranean Sea: Connected to the Atlantic Ocean through the Strait of Gibraltar.
• Red Sea: Linked to the Gulf of Aden through the Bab-el-Mandeb Strait.
• Persian Gulf: Connected to the Gulf of Oman through the Strait of Hormuz.
• Strait of Malacca: An important shipping route between the Indian Ocean region and the South China Sea.
• Bering Strait: Separates Asia from North America.
• Suez Canal: Connects the Mediterranean Sea with the Red Sea.
• Panama Canal: Connects the Atlantic and Pacific ocean routes through Central America.

Exam Point: Do not confuse a strait with a canal. A strait is a natural water passage between land areas, while a canal is an artificial waterway constructed or modified for navigation.

Important Countries and Their Capitals

Country-capital questions are common in general knowledge examinations. Start with India's neighbouring countries, major world powers, important European nations and countries frequently mentioned in international affairs.

Asian countries and capitals

Country	Capital
India	New Delhi
China	Beijing
Japan	Tokyo
South Korea	Seoul
North Korea	Pyongyang
Pakistan	Islamabad
Bangladesh	Dhaka
Nepal	Kathmandu
Bhutan	Thimphu
Sri Lanka	Sri Jayawardenepura Kotte is the legislative capital; Colombo is the principal commercial centre.
Maldives	Malé
Afghanistan	Kabul
Thailand	Bangkok
Vietnam	Hanoi
Malaysia	Kuala Lumpur
Singapore	Singapore
Indonesia	Jakarta; the planned capital relocation to Nusantara has been under development.
Saudi Arabia	Riyadh
United Arab Emirates	Abu Dhabi
Qatar	Doha
Iran	Tehran
Iraq	Baghdad
Turkey (Türkiye)	Ankara
Myanmar	Naypyidaw

European countries and capitals

Country	Capital
United Kingdom	London
France	Paris
Germany	Berlin
Italy	Rome
Spain	Madrid
Portugal	Lisbon
Netherlands	Amsterdam
Belgium	Brussels
Switzerland	Bern
Austria	Vienna
Greece	Athens
Norway	Oslo
Sweden	Stockholm
Finland	Helsinki
Denmark	Copenhagen
Poland	Warsaw
Ukraine	Kyiv
Russia	Moscow
Iceland	Reykjavík
Ireland	Dublin

Countries in the Americas

Country	Capital
United States	Washington, D.C.
Canada	Ottawa
Mexico	Mexico City
Brazil	Brasília
Argentina	Buenos Aires
Chile	Santiago
Peru	Lima
Colombia	Bogotá
Venezuela	Caracas
Cuba	Havana
Jamaica	Kingston
Costa Rica	San José

African countries and capitals

Country	Capital
Egypt	Cairo
South Africa	Pretoria is the executive capital, Cape Town the legislative capital and Bloemfontein the traditional judicial capital.
Nigeria	Abuja
Kenya	Nairobi
Ethiopia	Addis Ababa
Ghana	Accra
Morocco	Rabat
Algeria	Algiers
Tanzania	Dodoma
Uganda	Kampala
Senegal	Dakar
Zimbabwe	Harare

Countries in Oceania

Country	Capital
Australia	Canberra
New Zealand	Wellington
Fiji	Suva
Papua New Guinea	Port Moresby
Samoa	Apia
Tonga	Nuku'alofa

Exam Point: Remember the less obvious capital pairs: Australia–Canberra, Canada–Ottawa, Brazil–Brasília, Türkiye–Ankara, Nigeria–Abuja and Kazakhstan–Astana. These are often confused with the countries' better-known cities.

Important World Geography Facts

Major mountains and plateaus

Feature	Location or importance
Mount Everest	Himalayas, on the Nepal–China border; highest mountain above sea level.
K2	Karakoram Range; second-highest mountain above sea level.
Andes	Western South America; the world's longest continental mountain range.
Rocky Mountains	Western part of North America.
Alps	Major mountain system of central Europe.
Atlas Mountains	Northwestern Africa.
Tibetan Plateau	Asia; commonly called the world's highest and largest high plateau.

Major rivers and lakes

River or lake	Important fact
Nile River	Traditionally described as the world's longest river, although comparisons with the Amazon depend on measurement methods.
Amazon River	Has the world's largest river discharge by volume.
Yangtze River	The longest river in Asia.
Mississippi–Missouri system	One of North America's major river systems.
Danube River	Flows through or along several European countries.
Lake Baikal	In Russia; the world's deepest freshwater lake by maximum depth.
Caspian Sea	The world's largest inland body of water by surface area, commonly classified as a lake.
Lake Superior	Largest freshwater lake by surface area among the Great Lakes and the world's largest freshwater lake by surface area.
Dead Sea	A hypersaline lake bordered by Jordan and Israel and the West Bank; its shoreline is among Earth's lowest exposed land elevations.
Lake Victoria	A major African lake shared by Tanzania, Uganda and Kenya.

Deserts, climate and natural features

• Sahara Desert: The world's largest hot desert, located in North Africa.
• Antarctic Desert: The world's largest desert overall because deserts are defined by low precipitation, not high temperatures.
• Gobi Desert: Located in Mongolia and northern China.
• Atacama Desert: Located mainly in northern Chile; known for extreme aridity.
• Equator: Divides Earth into the Northern and Southern Hemispheres.
• Prime Meridian: The reference meridian at 0° longitude passes through Greenwich, London.
• International Date Line: An approximate line around 180° longitude where calendar dates generally change.
• Ring of Fire: A zone around much of the Pacific basin with frequent earthquakes and volcanic activity.

Exam Point: A desert is defined mainly by a shortage of precipitation. Therefore, Antarctica qualifies as a desert despite its ice cover, while the Sahara is the largest hot desert.

Important International Organisations

International organisations work on issues such as peace, public health, education, finance, trade and development. Questions commonly cover their headquarters, establishment dates and main functions.

Organisation	Headquarters	Main role
United Nations (UN)	New York City, USA	International cooperation, peace and security, and global development.
World Health Organization (WHO)	Geneva, Switzerland	International public health.
UNESCO	Paris, France	Education, science, culture and heritage cooperation.
UNICEF	New York City, USA	Promotes the rights and welfare of children.
International Monetary Fund (IMF)	Washington, D.C., USA	Monetary cooperation and international financial stability.
World Bank	Washington, D.C., USA	Development financing and poverty reduction.
World Trade Organization (WTO)	Geneva, Switzerland	Rules and negotiations concerning international trade.
International Labour Organization (ILO)	Geneva, Switzerland	Labour standards and decent work.
Food and Agriculture Organization (FAO)	Rome, Italy	Food security, agriculture and nutrition.
International Court of Justice (ICJ)	The Hague, Netherlands	Settles legal disputes between states and gives advisory opinions.
International Atomic Energy Agency (IAEA)	Vienna, Austria	Cooperation and safeguards relating to nuclear energy.
International Civil Aviation Organization (ICAO)	Montreal, Canada	International civil aviation standards and cooperation.
International Telecommunication Union (ITU)	Geneva, Switzerland	Telecommunications and information and communication technology coordination.
Organisation for Economic Co-operation and Development (OECD)	Paris, France	Policy cooperation and economic analysis.
Association of Southeast Asian Nations (ASEAN)	Jakarta, Indonesia	Regional cooperation in Southeast Asia.

United Nations: facts for exams

• The UN Charter was signed on 26 June 1945 in San Francisco.
• The United Nations officially came into existence on 24 October 1945.
• The organisation currently has 193 Member States.
• Its six official languages are Arabic, Chinese, English, French, Russian and Spanish.
• The Security Council has 15 members: five permanent members and ten elected members.
• The five permanent members are China, France, Russia, the United Kingdom and the United States.
• The International Court of Justice is the principal judicial organ of the United Nations.

Exam Point: The United Nations and the League of Nations are different organisations. The League of Nations was established after the First World War, while the United Nations was established in 1945 following the Second World War.

Famous World Landmarks and Wonders

Landmark	Country or location
Great Wall	China
Taj Mahal	India
Colosseum	Rome, Italy
Petra	Jordan
Christ the Redeemer	Rio de Janeiro, Brazil
Machu Picchu	Peru
Chichén Itzá	Mexico
Great Pyramid of Giza	Egypt
Eiffel Tower	Paris, France
Statue of Liberty	New York Harbor, USA
Burj Khalifa	Dubai, United Arab Emirates
Angkor Wat	Cambodia
Stonehenge	England, United Kingdom
Sydney Opera House	Sydney, Australia

The New7Wonders list announced in 2007 includes the Great Wall of China, Petra, Christ the Redeemer, Machu Picchu, Chichén Itzá, the Colosseum and the Taj Mahal. The Great Pyramid of Giza was given honorary status in that campaign. This modern list should not be confused with the Seven Wonders of the Ancient World.

Exam Point: The Eiffel Tower is in France, the Statue of Liberty is in the United States, and the Great Pyramid of Giza is in Egypt. Questions often ask candidates to match a monument with its country.

Common World GK Exam Traps

• Largest ocean: Pacific Ocean, not the Atlantic Ocean.
• Highest mountain: Mount Everest when measured above sea level. Other mountains may rank differently when measured from their base or Earth's centre.
• Largest desert: Antarctic Desert overall; Sahara Desert among hot deserts.
• Largest country by area: Russia. Population rankings are a different measure.
• Australia and Oceania: Australia is a continent; Oceania is a broader regional term.
• Netherlands and Amsterdam: Amsterdam is the constitutional capital, while the government and parliament are seated in The Hague.
• South Africa: It has three capital functions, rather than one city performing all of them.
• UN languages: The UN has six official languages, but this does not mean every member country has one of those languages as its national language.
• ICJ and ICC: The International Court of Justice is a UN principal organ dealing with disputes between states; the International Criminal Court is a separate institution that prosecutes individuals for specified international crimes.
• Nile and Amazon: The Nile is traditionally listed as the longest river, while the Amazon carries the greatest volume of water. Length estimates can vary by measurement method.

World GK One-Liners for Quick Revision

• Asia is the largest continent by area.
• The Pacific Ocean is the largest ocean on Earth.
• Mount Everest is the highest mountain above sea level.
• The Sahara is the largest hot desert.
• Russia is the world's largest country by area.
• Vatican City is the smallest sovereign state by area.
• Canberra is the capital of Australia.
• Ottawa is the capital of Canada.
• Brasília is the capital of Brazil.
• Ankara is the capital of Türkiye.
• The UN was established on 24 October 1945.
• Geneva hosts the headquarters of WHO and WTO.
• The ICJ is located in The Hague, Netherlands.
• Lake Baikal is the world's deepest freshwater lake.
• The Strait of Gibraltar connects the Mediterranean Sea and the Atlantic Ocean.
• The Suez Canal connects the Mediterranean Sea and the Red Sea.
• The International Date Line broadly follows the 180° meridian.
• The Great Pyramid of Giza is in Egypt.

World GK MCQs for Competitive Exams

Try these questions without looking at the answer first. The set includes basic and conceptual questions suitable for general competitive-exam revision.

Q1. Which is the largest continent by area?
A. Africa
B. Europe
C. Asia
D. South America
Correct Answer: C. Asia

Q2. Which is the largest ocean in the world?
A. Pacific Ocean
B. Atlantic Ocean
C. Indian Ocean
D. Arctic Ocean
Correct Answer: A. Pacific Ocean

Q3. What is the capital of Australia?
A. Sydney
B. Melbourne
C. Perth
D. Canberra
Correct Answer: D. Canberra

Q4. Where is the headquarters of the World Health Organization located?
A. New York City
B. Geneva
C. Paris
D. Rome
Correct Answer: B. Geneva

Q5. Which is the world's largest hot desert?
A. Gobi Desert
B. Atacama Desert
C. Sahara Desert
D. Arabian Desert
Correct Answer: C. Sahara Desert

Q6. Which river has the greatest discharge by volume?
A. Nile
B. Yangtze
C. Mississippi
D. Amazon
Correct Answer: D. Amazon

Q7. Which organisation has its principal judicial organ in The Hague?
A. International Court of Justice
B. World Health Organization
C. World Trade Organization
D. International Monetary Fund
Correct Answer: A. International Court of Justice

Q8. Which canal connects the Mediterranean Sea and the Red Sea?
A. Panama Canal
B. Suez Canal
C. Kiel Canal
D. Corinth Canal
Correct Answer: B. Suez Canal

Q9. How many official languages does the United Nations have?
A. Four
B. Five
C. Seven
D. Six
Correct Answer: D. Six

Q10. Which is the world's deepest freshwater lake?
A. Lake Victoria
B. Lake Superior
C. Lake Baikal
D. Lake Tanganyika
Correct Answer: C. Lake Baikal

World GK Quick Revision Table

Topic	Important fact
Largest continent	Asia
Largest ocean	Pacific Ocean
Highest mountain above sea level	Mount Everest
Largest hot desert	Sahara Desert
Largest desert overall	Antarctic Desert
Largest country by area	Russia
Smallest sovereign state by area	Vatican City
Deepest freshwater lake	Lake Baikal
Capital of Australia	Canberra
Capital of Canada	Ottawa
UN establishment date	24 October 1945
UN membership	193 Member States
WHO headquarters	Geneva, Switzerland
ICJ location	The Hague, Netherlands

Frequently Asked Questions About World GK

What is World GK?

World General Knowledge covers facts about countries, capitals, continents, oceans, physical geography, international organisations, landmarks and global history. It is a common subject in school quizzes and competitive examinations.

What are the seven continents of the world?

The seven continents are Asia, Africa, North America, South America, Antarctica, Europe and Australia. Some educational systems use alternative continent models.

How many countries are there in the world?

There is no single count used by every organisation because recognition and the definition of a country can differ. A common general-knowledge reference is 195 countries: 193 UN Member States plus the two UN non-member observer states, the Holy See and the State of Palestine. The UN itself has 193 Member States.

Which is the largest country in the world?

Russia is the largest country by total area. This is different from rankings based on population, economic output or other measures.

Which is the highest mountain in the world?

Mount Everest, in the Himalayas on the Nepal–China border, is the highest mountain above sea level. Questions using a different measurement method may produce a different comparison.

Which international organisations should students memorise for exams?

Start with the United Nations, WHO, UNESCO, UNICEF, IMF, World Bank, WTO, ILO, FAO and International Court of Justice. Learn each organisation's headquarters and main function.

How can I prepare World GK for competitive examinations?

Study geography and country-capital pairs in small groups, use maps for location-based learning, revise international organisations and practise MCQs. Check official sources when a question concerns a changing capital designation, membership or current institutional fact.

Final Takeaway

• Learn continents, oceans, major physical features and country-capital pairs first.
• Revise international organisations alongside their headquarters and functions.
• Use maps to remember rivers, mountain ranges, straits and canals.
• Practise MCQs and revisit commonly confused facts before an examination.

Sources Referred

• United Nations: About Us and Member States
• United Nations: Official Languages and Areas of Work
• United Nations Treaty Collection: UN Charter
• World Bank: Countries and Economies
• Australian Antarctic Program: Who Owns Antarctica?