Question

In the International Union of Soil Science classification system, fine sand has a size range of

• A. 0.2 - 2.0 mm
• B. 0.02 - 0.2 mm
• C. 0.002 - 0.02 mm
• D. <0.002 mm

Hint:

Memorize soil particle sizes: Fine sand = 0.02–0.2 mm; Silt = 0.002–0.02 mm; Clay < 0.002 mm.

Answer 1

The Correct Option is B

Step 1: IUSS scale, coarse sand is 0.2 to 2.0 mm.
Step 2: Fine sand is the next finer class, silt is finer still, clay is under 0.002 mm.
Step 3: Fine sand therefore falls in the 0.02 to 0.2 mm band.
Step 4: Correct answer, 0.02 to 0.2 mm.