Question

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

• A. 0.2 - 0 mm
• B. 0.02 - 0.2 mm
• C. 0.002 - 0.02 mm
• D. $<$0.002 mm

Hint:

Remember the key difference: USDA classifies silt as $0.002 \text{ to } 0.05\text{ mm}$ and sand as $0.05 \text{ to } 0\text{ mm}$, whereas the IUSS system uses a consistent factor of 10 ($0.002 \rightarrow 0.02 \rightarrow 0.2 \rightarrow 0$).

Answer 1

The Correct Option is B