WAEC Agricultural Science 2025 Objective — Question 16

Question 16 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2025 Objective paper, with the correct answer and a full explanation.

Assuming the diameter of the illustrated tool is 0.05mm, which of the following soil particles would pass through it? I. silt II. fine sand III. coarse sand

A. I and IICorrect
B. I and III
C. II and III
D. I, II and III

Explanation

If a soil sieve has a mesh diameter of 0.05mm, only particles equal to or smaller than this size can pass through. Silt and fine sand are small enough to pass, while coarse sand is too large and will be retained by the mesh.

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