Civil Services Prep

Prelims MCQ · Geography

Consider the following statements:

  1. The upper portion of the mantle is called the asthenosphere and extends to approximately 400 km.
  2. The lithosphere consists of the crust and the uppermost portion of the mantle.
  3. The lower mantle beyond the asthenosphere is in a liquid state.
  4. The asthenosphere is an important source of magma that may find its way towards the surface.

Which of the statements given above are correct?

  1. 1 and 2 only
  2. 1, 2 and 4 only
  3. 2, 3 and 4 only
  4. 1, 3 and 4 only
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