Question

The ratio of the total mass of soil solids to the total volume of soil solids is called

• A. Bulk density
• B. Porosity
• C. Particle density
• D. Plasticity

Hint:

Soil density:
- Particle density: Mass/volume of solids (≈2.65 g/cm$^3$).
- Bulk density: Mass/volume of soil (including pores).

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
This question tests knowledge of soil physical properties.

Step 2: Detailed Explanation:
Particle density (C) is the ratio of the total mass of soil solids to the total volume of soil solids.
It is the density of the solid particles themselves, excluding pore space.
The particle density of most mineral soils is about 2.65 g/cm$^3$.
Other properties:
- Bulk density (A): Mass of soil solids per unit bulk volume (including pores).
- Porosity (B): Fraction of pore space in soil.
- Plasticity (D): Ability of soil to be molded.
Thus, particle density is the ratio of mass to volume of soil solids.

Step 3: Final Answer:
Thus, the ratio of the total mass of soil solids to the total volume of soil solids is called particle density, which corresponds to option (C).
[0.5cm]