Multiple choice

Moho-discontinuity is found between the

  1. crust and mantle

  2. upper mantle and lower mantle

  3. mantle and core

  4. inner core and outer core

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A Correct answer
Explanation

The Mohorovicic discontinuity (Moho) is the boundary between Earth's crust and the mantle, discovered by Andrija Mohorovicic in 1909. It is characterized by a sharp increase in seismic wave velocity (from about 6-7 km/s to 8+ km/s) due to the change in composition from crustal rocks to denser mantle rocks (peridotite).