Multiple choice

Which of the following represents the oldest volcanic activity in India?

  1. Formation of the Aravalli Mountains

  2. Dalma Hills of Bihar

  3. Formation of the Deccan Plateau

  4. Barren Island of Andaman & Nicobar
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dalma Hills in Bihar (now Jharkhand) represent the oldest volcanic activity in India, dating to the Precambrian period (over 1 billion years ago). This volcanic activity occurred during the early continental rifting phase. The Aravallis are fold mountains, Deccan Plateau formation is much more recent (Cretaceous), and Barren Island is currently active but not the oldest.

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