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World Geography: Seas, Straits and Landmarks MCQs

Solved world geography MCQs on the largest countries, lakes, islands, canals, straits, waterfalls and natural landmarks, with short explanations.

25 MCQsUpdated 27 October 2026

This second world geography set covers the largest countries, lakes and islands, famous canals and the seas they join, important straits, and other landmarks of physical geography.

Canal and strait questions are easier with a world map in front of you. Locate each one as you revise and note which two seas or oceans it connects.

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  1. 1

    Which is the largest country in the world by area?

    Correct answer: A. Russia

    Russia covers about 17 million square kilometres across Europe and Asia, roughly one-ninth of Earth's land area.

    easy
  2. 2

    Which is the most populous country in the world?

    Correct answer: A. India

    India overtook China as the most populous country in 2023, according to UN estimates.

    easy
  3. 3

    The deepest known point in the world's oceans is in the:

    Correct answer: B. Mariana Trench

    The Challenger Deep in the Mariana Trench, western Pacific, is about 11,000 m deep.

    easy
  4. 4

    The largest lake in the world by area is the:

    Correct answer: C. Caspian Sea

    The Caspian Sea, a saltwater lake bordered by Iran, Russia, Kazakhstan, Turkmenistan and Azerbaijan, is the largest lake. Lake Superior is the largest freshwater lake by area.

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    medium
  5. 5

    The longest mountain range on land is the:

    Correct answer: B. Andes

    The Andes run about 7,000 km along the western side of South America.

    medium
  6. 6

    Which river carries the largest volume of water in the world?

    Correct answer: B. Amazon

    The Amazon carries more water than any other river, about a fifth of all river water reaching the oceans.

    medium
  7. 7

    The largest island in the world is:

    Correct answer: C. Greenland

    Greenland, an autonomous territory of Denmark, is the largest island. Australia is counted as a continent.

    easy
  8. 8

    The smallest continent by area is:

    Correct answer: A. Australia

    Australia (with Oceania) is the smallest continent. There are seven continents in total.

    easy
  9. 9

    The Suez Canal connects the Mediterranean Sea with the:

    Correct answer: C. Red Sea

    The Suez Canal in Egypt opened in 1869 and shortened the sea route between Europe and Asia.

    easy
  10. 10

    The Panama Canal connects which two oceans?

    Correct answer: D. Atlantic and Pacific

    The Panama Canal, opened in 1914, links the Atlantic and Pacific Oceans across the Isthmus of Panama.

    easy
  11. 11

    The Strait of Hormuz connects the Persian Gulf with the:

    Correct answer: A. Gulf of Oman

    The narrow Strait of Hormuz between Iran and Oman is one of the world's most important oil shipping routes.

    medium
  12. 12

    The Bosphorus Strait divides which city between Europe and Asia?

    Correct answer: C. Istanbul

    The Bosphorus joins the Black Sea to the Sea of Marmara and splits Istanbul between two continents.

    easy
  13. 13

    The Strait of Malacca lies between the Malay Peninsula and which island?

    Correct answer: A. Sumatra

    The Strait of Malacca separates Malaysia from the Indonesian island of Sumatra and is a major shipping lane.

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  14. 14

    The lowest point on land, about 430 m below sea level, is at the shore of the:

    Correct answer: A. Dead Sea

    The shores of the Dead Sea, between Jordan and Israel/the West Bank, are the lowest dry land on Earth.

    medium
  15. 15

    Angel Falls, the world's highest uninterrupted waterfall, is located in:

    Correct answer: C. Venezuela

    Angel Falls in Venezuela drops about 979 m.

    medium
  16. 16

    The highest mountain in Africa is:

    Correct answer: C. Mount Kilimanjaro

    Kilimanjaro in Tanzania, a dormant volcano about 5,895 m high, is Africa's highest peak.

    easy
  17. 17

    The Atacama Desert, one of the driest places on Earth, is in:

    Correct answer: D. Chile

    The Atacama in northern Chile is the driest non-polar desert. Some weather stations there have almost never recorded rain.

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    medium
  18. 18

    The Gobi Desert is located in:

    Correct answer: B. Mongolia and China

    The Gobi is a cold desert that covers southern Mongolia and northern China.

    easy
  19. 19

    The Prime Meridian (0° longitude) passes through:

    Correct answer: D. Greenwich, London

    The Prime Meridian passes through the Royal Observatory at Greenwich, London, and is the starting point for world time zones.

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    easy
  20. 20

    The International Date Line roughly follows which line of longitude?

    Correct answer: D. 180°

    The International Date Line roughly follows the 180° meridian in the Pacific, zigzagging to avoid splitting countries.

    medium