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Use the information below to answer this question. In an experiment on soil porosity, the...

Agricultural Science
WAEC 2022

Use the information below to answer this question.
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

Calculate the porosity of the soil sample

  • A. 28.21%
  • B. 42.31%
  • C. 45.83%
  • D. 61.54%
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Correct Answer: Option B
Explanation

Porosity of the soil sample = \(\frac{volume of air space in the soil}{ volume of soil sample}\)  x 100
                                           = \(\frac{22cm^3}{52cm^3}\)  x 100 = \(\frac{2200}{52}\) = 42.31 %


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