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WAEC Agricultural Science 2022 Question 11

Question 11

Rocks and Soil Formation

A difference between physical and chemical weathering is that

  1. A.there is a change in the mineral composition of rock in physical weathering.
  2. B.the mineral composition of rock is changed in chemical weathering.
  3. C.carbonation is necessary in physical weathering.
  4. D.wind is necessary in chemical weathering.
Show the answer and explanation

Answer: B (the mineral composition of rock is changed in chemical weathering.)

Explanation

Chemical weathering changes the minerals; physical weathering only breaks rock up.