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WAEC Geography 2019 Question 20

Question 20

Rocks

Which of the following examples of igneous rock is extrusive?

  1. A.Granite
  2. B.Basalt
  3. C.Gabbro
  4. D.Diorite
Show the answer and explanation

Answer: B (Basalt)

Explanation

Basalt forms from lava cooling quickly at the surface.