1. Soil separates are classified primarily based on _______ ____________

 Particle size

 Mineralogical composition

 Chemical reactivity

 Bulk density

2. Which soil property most strongly controls water-holding capacity?

 Soil structure

 Soil temperature

 Soil density

 Soil texture

3. Soil porosity refers to ___________________

 Organic matter fraction

 Volume of solid particles

 Water content only

 Volume of pore spaces

4. Which of the following is NOT a physical property of soil?

 Texture

 Porosity

 pH

 Structure

5. Which of the following decreases bulk density?

 Deep plowing

 Compaction

 High organic matter content

 High sand content

6. Which soil fraction contributes most to cation exchange capacity (CEC)?

 Sand

 Clay

 Gravel

 Silt

7. Soil tilth is best defined as the _______

 Mineralogical composition of soil

 Chemical composition of soil

 Physical condition of soil in relation to plant growth

 Biological diversity of soil

8. Pore size distribution refers to the _______

 Chemical composition of pores

 Density of soil particles

 Relative proportion of different pore sizes 

 Total volume of pores

9. Which soil type retains the least water after drainage?

 Clay soil

 Loam soil

 Silt soil

 Sandy soil

10. Which soil particle has the largest size?

 Clay

 Sand

 Silt

 Loam

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