WAEC Agricultural Science 2022 Objective — Question 13

Question 13 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2022 Objective paper, with the correct answer and a full explanation.

Calculate the porosity of the soil sample.

A. 28.21%
B. 42.31%Correct
C. 45.83%
D. 61.54%

Explanation

Porosity (% air) = (Volume of air in soil ÷ Volume of soil) × 100% = (22 ÷ 52) × 100% = 42.31%.

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