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WAEC Agricultural Science 2022 Question 12

Question 12

Soil Properties

In an experiment on soil porosity, the following results were obtained: Volume of dry soil = 52cm3. Volume of water = 48cm3. Volume of soil and water = 78cm3
Determine the volume of airspace in the soil sample.

  1. A.22cm3
  2. B.26cm3
  3. C.30cm3
  4. D.100cm3
Show the answer and explanation

Answer: A (22cm3)

Explanation

Air space = (52 + 48) − 78 = 22 cm³, the water that went into the pores.