CORRECT OPTION IS (B).
Since properties of clay soils is less dependent on particle size distrubution(textural classification) and more dependent on size it is best suited for clay soil.

Particle size classification is best suited for clay soil.

Particle size classification is a method used to categorize soil particles based on their size. It is an important aspect of soil testing and analysis in civil engineering. Different soil types have different particle size distributions, and understanding the particle size distribution of a soil sample can provide valuable information about its engineering properties and behavior.

Importance of particle size classification

Particle size classification is essential in soil engineering for several reasons:

1. Engineering properties: The particle size distribution of a soil affects its engineering properties, such as permeability, compressibility, shear strength, and compaction characteristics. By determining the particle size distribution, engineers can predict and analyze these properties, which are crucial for designing foundations, embankments, and other civil engineering structures.

2. Soil classification: Particle size classification is a fundamental part of soil classification systems, such as the Unified Soil Classification System (USCS) and the AASHTO classification system. These systems categorize soils into different groups based on their particle size distributions, allowing engineers to compare and select appropriate construction materials and design parameters.

3. Soil behavior: The particle size distribution of a soil can influence its behavior under different loading and environmental conditions. For example, clay soils with a high percentage of fine particles tend to exhibit high plasticity, shrink-swell behavior, and low permeability. Understanding the particle size distribution helps engineers anticipate and mitigate potential issues related to soil behavior.

Why clay soil is best suited for particle size classification?

While particle size classification is applicable to various soil types, clay soil is particularly well-suited for this analysis due to its unique characteristics:

1. Wide range of particle sizes: Clay soil consists of a wide range of particle sizes, including fine particles such as silt and clay. This wide distribution makes it necessary to perform particle size analysis to accurately determine the proportions of different particle sizes and their respective engineering implications.

2. Plasticity and compaction properties: Clay soils are known for their high plasticity and compressibility. Particle size classification helps in understanding the distribution of fine particles, which directly affects the soil's plasticity and compaction properties. This information is crucial for designing foundations and earth structures on clay soils.

3. Permeability: Clay soils typically have low permeability due to the small particle sizes and the resulting small pore spaces. Particle size analysis helps to quantify the fine particle content, which is directly related to the soil's permeability. This information is essential for drainage and seepage analysis in civil engineering projects.

In conclusion, while particle size classification is applicable to various soil types, it is particularly important for clay soils due to their wide range of particle sizes and unique engineering properties. Understanding the particle size distribution of clay soil helps engineers make informed decisions regarding soil behavior, classification, and design considerations.

Right ans should be... option A. become coarse grained soil properties mostly depends on particle classification. in case of clay, properties will vary with water content and less depends on particle size. hope u get it.