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WAEC Agricultural Science 2004 Question 7

Question 7

Soil Properties

Clay particles are able to attract cations in the soil because they

  1. A.are positively charged
  2. B.have excess negative charges
  3. C.are sticky
  4. D.can be moulded
Show the answer and explanation

Answer: B (have excess negative charges)

Explanation

Clay surfaces carry negative charges, which hold positive ions (cations).