WAEC Agricultural Science 2009 Question 9

Question 9

Rocks and Soil Formation

Which of the following rocks is not formed from pre-existing rocks?

  1. A.Limestone
  2. B.Granite
  3. C.Shale
  4. D.Marble
Show the answer and explanation

Answer: B (Granite)

Explanation

Granite is an igneous rock formed from cooled magma; limestone and shale are sedimentary and marble is metamorphic.