What size defines sand in millimeters?

• A. 0.002 to 0.075
• B. 0.075 to 2
• C. 2 to 60
• D. 60 to 200

Answer: (B)

Sand is defined by its particle size, which falls within the range of 0.075 to 2 millimeters in diameter. This classification is critical in soil science and engineering since the size of the particles affects the properties of the soil, such as drainage, compaction, and load-bearing capacity.

Particles smaller than 0.075 millimeters are categorized as silt or clay, while those larger than 2 millimeters are considered gravel. The correct classification ensures appropriate use in various applications, whether in construction, landscaping, or soil testing. A clear understanding of these categories is essential for professionals in fields dealing with soil materials, ensuring they choose the right type of soil for specific projects.