All Free General Knowledge MCQs with Answers

• A. About 12,500 metres
• B. About 5,000 metres
• C. About 7,000 metres
• D. About 10,900 metres

Explanation: The Challenger Deep plunges to roughly 10,900 m below sea level.

• A. The San Andreas Fault
• B. The North Anatolian Fault
• C. The Alpine Fault
• D. The Dead Sea Fault

Explanation: California's San Andreas Fault is the classic transform boundary.

• A. The East Anatolian Fault
• B. The North Anatolian Fault
• C. The Alpine Fault
• D. The San Andreas Fault

Explanation: The North Anatolian Fault has produced a series of devastating Turkish earthquakes.

• A. The Patagonian Andes only
• B. The Andes
• C. The Brazilian Highlands
• D. The Guiana Highlands

Explanation: The Andes rose where oceanic plates subduct beneath South America.

• A. The Cocos Plate
• B. The Pacific Plate
• C. The Nazca Plate
• D. The Caribbean Plate

Explanation: The Nazca Plate dives eastward beneath the South American Plate.

• A. A coral atoll chain
• B. A continental volcanic arc
• C. A mid-ocean ridge
• D. A volcanic island arc

Explanation: Ocean–ocean convergence builds curved chains of volcanic islands like Japan.

• A. The South China Sea
• B. The Bering Sea region (northern Pacific, Aleutian Arc)
• C. The Caribbean Sea
• D. The Mediterranean Sea

Explanation: The Aleutian Arc curves across the northern Pacific at the Bering Sea's edge.

• A. A ring of coral reefs
• B. A circle of typhoons
• C. A horseshoe-shaped belt of intense volcanic and earthquake activity around the Pacific Ocean
• D. A band of deep ocean currents

Explanation: The Ring of Fire follows the Pacific's plate boundaries with most of the world's quakes and volcanoes.

• A. About 50%
• B. About 70%
• C. About 30%
• D. About 90%

Explanation: Roughly 90% of earthquakes strike along the Ring of Fire.

• A. Around 450
• B. Around 900
• C. Around 150
• D. Around 300

Explanation: The Ring of Fire hosts about 450 volcanoes, over three-quarters of the world's active and dormant ones.

• A. Thailand
• B. Japan
• C. Vietnam
• D. Malaysia

Explanation: Japan sits at the junction of several plates on the Ring of Fire, hence its frequent quakes.

• A. Nepal
• B. Sri Lanka
• C. Bangladesh
• D. Myanmar

Explanation: The Sundarbans mangrove delta straddles India and Bangladesh.

• A. The south coast
• B. The north-east coast
• C. The east coast
• D. The west coast

Explanation: The Konkan coast runs along India's western seaboard in Maharashtra and Goa.

• A. The Arabian Sea
• B. The Bay of Bengal
• C. The Palk Strait
• D. The Gulf of Mannar

Explanation: The Coromandel Coast of Tamil Nadu faces the Bay of Bengal.

• A. Lava plains
• B. Coastal plains
• C. Alluvial plains
• D. Glacial plains

Explanation: Alluvial plains are built from silt and sediment deposited by rivers.

• A. Laterite
• B. Red earth
• C. Yellow earth
• D. Black earth

Explanation: Chernozem's dark, humus-rich profile gives it the name "black earth".

• A. Ukraine
• B. France
• C. Poland
• D. Romania

Explanation: Ukraine's fertile black-earth steppes make it Europe's great grain producer.

• A. British Columbia, Alberta and Saskatchewan
• B. Alberta, Saskatchewan and Manitoba
• C. Manitoba, Ontario and Saskatchewan
• D. Ontario, Quebec and Manitoba

Explanation: Canada's three Prairie Provinces are Alberta, Saskatchewan and Manitoba.

• A. Colombia
• B. Argentina
• C. Brazil (mainly)
• D. Paraguay

Explanation: The Pantanal, the largest tropical wetland, lies mostly in western Brazil.

• A. Sudan
• B. Ethiopia
• C. Egypt
• D. Uganda

Explanation: The Nile Delta fans out across northern Egypt to the Mediterranean.