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SSC CHSL 2020 PYQ — Question 35

SSC CHSL - 13th October 2020 - Shift 2 • General Awareness • Q35

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Which of the following options represents the most explosive type of volcano?

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Correct answer: A

Explanation

The correct answer is option 1 i.e. Calderas volcanoes.

The most explosive type of volcano is the Caldera volcano. These form after massive eruptions eject vast amounts of magma, causing the ground to collapse into the emptied chamber. Their eruptions are highly violent, producing pyroclastic flows, ash clouds, and global climate effects (e.g., Yellowstone and Toba).

Other Options:

  1. Cinder Cones: Small, steep-sided volcanoes formed from ejected lava fragments. They have mild to moderate eruptions.

  2. Flood Basalt Volcanoes: Emit low-viscosity lava in massive, non-explosive flows, covering large areas (e.g., Deccan Traps).

  3. Shield Volcanoes: Broad, gently sloping volcanoes built by fluid lava flows (e.g., Mauna Loa). Eruptions are typically non-explosive.

Calderas are the most explosive due to their high-silica, gas-rich magma, leading to catastrophic eruptions.