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Showing MCQs of Subject - Geography and Examination - UPSC | Page 398

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Rati Dubey • 8.55K Points
Tutor III

Q. Which volcanic eruption in 1815 is considered the largest in recorded history?

  • (A) Krakatoa
  • (B) Mount Tambora
  • (C) Mount Pinatubo
  • (D) Mauna Loa
Correct Answer - Option (B)

Explanation:
The 1815 eruption of Mount Tambora in Indonesia was the largest recorded eruption, causing the 'Year Without a Summer'.

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Rati Dubey • 8.55K Points
Tutor III

Q. Which country has the largest number of active volcanoes?

  • (A) Japan
  • (B) Indonesia
  • (C) United States
  • (D) Italy
Correct Answer - Option (B)

Explanation:
Indonesia has the most active volcanoes in the world, due to its location on the Pacific Ring of Fire.

R

Rati Dubey • 8.55K Points
Tutor III

Q. Which type of volcano erupts most frequently?

  • (A) Composite volcano
  • (B) Shield volcano
  • (C) Cinder cone volcano
  • (D) Caldera
Correct Answer - Option (B)

Explanation:
Shield volcanoes, like Mauna Loa, erupt frequently with non-explosive lava flows.

R

Rati Dubey • 8.55K Points
Tutor III

Q. Which volcanic island in Italy is still active?

  • (A) Santorini
  • (B) Stromboli
  • (C) Sicily
  • (D) Corsica
Correct Answer - Option (B)

Explanation:
Stromboli, known as the 'Lighthouse of the Mediterranean,' has been erupting continuously for centuries.

R

Rati Dubey • 8.55K Points
Tutor III

Q. Which plate boundary is most commonly associated with volcanoes?

  • (A) Transform boundary
  • (B) Divergent boundary
  • (C) Convergent boundary
  • (D) Passive margin
Correct Answer - Option (C)

Explanation:
Volcanoes often form at convergent boundaries where one plate subducts beneath another, generating magma.

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Rati Dubey • 8.55K Points
Tutor III

Q. Which volcanic eruption in the Philippines in 1991 caused global cooling?

  • (A) Mount Mayon
  • (B) Mount Taal
  • (C) Mount Pinatubo
  • (D) Mount Apo
Correct Answer - Option (C)

Explanation:
Mount Pinatubo's 1991 eruption released huge amounts of ash and sulfur dioxide, cooling global temperatures temporarily.

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Rati Dubey • 8.55K Points
Tutor III

Q. Which U.S. state has the most volcanoes?

  • (A) California
  • (B) Washington
  • (C) Hawaii
  • (D) Alaska
Correct Answer - Option (D)

Explanation:
Alaska has the most volcanoes in the U.S., with more than 130 active and dormant volcanoes.

R

Rati Dubey • 8.55K Points
Tutor III

Q. Which of the following is NOT a type of volcanic cone?

  • (A) Cinder cone
  • (B) Composite cone
  • (C) Shield cone
  • (D) Glacial cone
Correct Answer - Option (D)

Explanation:
Glacial cones are not volcanic; cinder, composite, and shield cones are actual volcanic structures.

R

Rati Dubey • 8.55K Points
Tutor III

Q. Which volcanic eruption caused the 'Year Without a Summer' in 1816?

  • (A) Krakatoa
  • (B) Mount Vesuvius
  • (C) Mount Tambora
  • (D) Mount Pinatubo
Correct Answer - Option (C)

Explanation:
The 1815 eruption of Mount Tambora released massive amounts of ash and gases, cooling the Earth and causing 1816 to be known as the 'Year Without a Summer'.

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Rati Dubey • 8.55K Points
Tutor III

Q. Which of the following is a dormant volcano in Japan?

  • (A) Mount Fuji
  • (B) Mount Etna
  • (C) Mount St. Helens
  • (D) Mount Mayon
Correct Answer - Option (A)

Explanation:
Mount Fuji is considered a dormant volcano in Japan, but it is still classified as active because it may erupt again.

R

Rati Dubey • 8.55K Points
Tutor III

Q. What is volcanic ash primarily made of?

  • (A) Sand and soil
  • (B) Tiny fragments of volcanic glass and rock
  • (C) Charcoal and dust
  • (D) Salt and minerals
Correct Answer - Option (B)

Explanation:
Volcanic ash consists of fine particles of volcanic glass and rock that form during explosive eruptions.

R

Rati Dubey • 8.55K Points
Tutor III

Q. What type of lava flow forms rough, jagged surfaces?

  • (A) Aa lava
  • (B) Pahoehoe lava
  • (C) Block lava
  • (D) Rhyolitic lava
Correct Answer - Option (A)

Explanation:
Aa lava forms rough, jagged surfaces, while Pahoehoe lava forms smooth, rope-like surfaces.