Civil Services Prep

Prelims MCQ · Geography

Which one of the following correctly describes the terminology used for molten rock associated with the mantle and volcanic eruptions?

  1. Molten material in the upper mantle is called lava, but it becomes magma after reaching the surface.
  2. Magma refers only to volcanic ash and gases, whereas lava originates in the liquid outer core.
  3. Lava is the term used exclusively for molten material that cools within the deeper crust.
  4. Molten material in the upper mantle is called magma; when it moves towards the crust or reaches the surface, it is referred to as lava.
  1. A geological survey records the following intrusive bodies: Body P is thin and nearly horizontal. Body Q is…
  2. A place has the following characteristics: Its underlying land surface heats rapidly during summer and cools…
  3. A stream on one side of a divide has a steeper gradient and receives more precipitation than a neighbouring…
  4. A survey identifies three plate-boundary settings: At boundary X, normal and reverse magnetic strips parallel…
  5. Although the vertical pressure-gradient force in the lower atmosphere is much greater than the horizontal…
  6. An earthquake releases energy at a point below the Earth’s surface. Which one of the following correctly…