Q. What is obsidian?

  • (A) A volcanic glass formed from rapidly cooling lava
  • (B) A type of volcanic ash
  • (C) A crystalline volcanic rock
  • (D) A gas released from volcanoes
✅ Correct Answer: (A) A volcanic glass formed from rapidly cooling lava
Explanation: Obsidian is a volcanic glass formed when lava cools quickly without forming crystals.

Published by Rati Dubey ⭐ 9.05K Points at 20-Sep-2025 07:10 am in Geography

Explanation by: Rati Dubey
Obsidian is a volcanic glass formed when lava cools quickly without forming crystals.

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