All Free General Knowledge MCQs with Answers

• A. Thimphu, Bhutan
• B. Bogotá, Colombia
• C. La Paz, Bolivia
• D. Quito, Ecuador

Explanation: La Paz (about 3,640 m) is the world's highest seat of government.

• A. Lake Van
• B. Great Salt Lake
• C. Lake Baikal
• D. Lake Titicaca

Explanation: Lake Titicaca (about 3,812 m) on the Peru–Bolivia border is the highest large navigable lake.

• A. Bonneville Salt Flats
• B. Salar de Uyuni, Bolivia
• C. Etosha Pan
• D. Salar de Atacama

Explanation: Bolivia's Salar de Uyuni (about 10,000 sq km) is the largest salt flat on Earth.

• A. The Arabian Desert
• B. The Kalahari
• C. The Sahara
• D. The Gobi

Explanation: The Sahara (about 9.2 million sq km) is the largest hot desert.

• A. Mulu Caves, Malaysia
• B. Carlsbad Caverns, USA
• C. Mammoth Cave, USA
• D. Hang Sơn Đoòng, Vietnam

Explanation: Vietnam's Hang Sơn Đoòng is the largest known cave passage by volume.

• A. The Amazon Rainforest
• B. The Congo Rainforest
• C. The Daintree
• D. The Valdivian forest

Explanation: The Amazon is by far the largest tropical rainforest on Earth.

• A. The New Caledonia Reef
• B. The Great Barrier Reef
• C. The Red Sea reefs
• D. The Belize Barrier Reef

Explanation: Australia's Great Barrier Reef, about 2,300 km long, is the largest coral reef system.

• A. Sumatra
• B. Madagascar
• C. Greenland
• D. Borneo

Explanation: Greenland (about 2.16 million sq km) is the world's largest island.

• A. The Mississippi
• B. The Amazon
• C. The Yangtze
• D. The Nile

Explanation: The Nile (about 6,650 km) is traditionally regarded as the world's longest river.

• A. The Ganga
• B. The Amazon
• C. The Orinoco
• D. The Congo

Explanation: The Amazon discharges about a fifth of all river water reaching the oceans.

• A. The Lena
• B. The Mekong
• C. The Yangtze
• D. The Ganga

Explanation: The Yangtze (about 6,300 km) is Asia's longest river.

• A. The Yukon
• B. The Rio Grande
• C. The Missouri
• D. The Mississippi

Explanation: The Missouri (about 3,767 km) is the longest river in the United States.

• A. The Chenab
• B. The Kabul
• C. The Jhelum
• D. The Indus

Explanation: The Indus (about 3,180 km) is Pakistan's longest river.

• A. The Murray
• B. The Darling
• C. The Murrumbidgee
• D. The Lachlan

Explanation: The Murray (about 2,508 km) is Australia's longest river.

• A. The Yangtze
• B. The Congo
• C. The Mekong
• D. The Amazon

Explanation: The Congo plunges over 220 m deep in places, the deepest of any river.

• A. The Indus
• B. The Brahmaputra
• C. The Ganga
• D. The Godavari

Explanation: The Ganga (about 2,525 km) is India's longest river flowing mostly inside the country.

• A. The Caspian Sea
• B. Lake Superior
• C. Lake Victoria
• D. Lake Huron

Explanation: The Caspian Sea (about 371,000 sq km) is the largest lake by area.

• A. Lake Baikal
• B. Lake Superior
• C. Lake Michigan
• D. Lake Victoria

Explanation: Lake Superior (about 82,100 sq km) is the largest freshwater lake by surface area.

• A. Lake Vostok
• B. Lake Tanganyika
• C. Lake Baikal
• D. The Caspian Sea

Explanation: Siberia's Lake Baikal reaches 1,642 m deep.

• A. Lake Superior
• B. Lake Tanganyika
• C. The Caspian Sea
• D. Lake Baikal

Explanation: Lake Baikal holds about 20% of the world's unfrozen surface fresh water.