Soil Types and Characteristics

The video tutorial explains soil classification, focusing on residual and transported soils. It details the agents of transport like water, wind, and snow, and further classifies soils based on cohesion, particle size, color, plasticity, and compressibility. The tutorial provides examples for each type, such as clay for cohesive soils and sand for non-cohesive soils.

What is the main characteristic of residual soils?

• They are found only in desert regions.

• They are formed by volcanic activity.

• They are transported far from their origin.

• They remain at the place of their origin.

Which of the following is NOT an agent of transport for soils?

• Wind

• Water

• Fire

• Snow

Alluvial soils are primarily formed by which agent?

• Volcanic activity

• Wind

• Running water

• Snow

What type of soil is formed by wind carrying fine particles?

• Alluvial soils

• Glacial soils

• Aeolian soils

• Lacustrine soils

Cohesive soils are characterized by:

• High plasticity

• Low cohesion between particles

• Large particle size

• High cohesion between particles

Which soil type is an example of non-cohesive soil?

• Clay

• Sand

• Silt

• Peat

Coarse-grained soils have particles larger than:

• 3 mm

• 4.7 mm

• 2 mm

• 1 mm

Which soil color indicates the presence of black cotton soil?

• Red

• Yellow

• Black

• Brown

Highly plastic soils are likely to be:

• Sandy soils

• Clay soils

• Peaty soils

• Gravel soils

Which type of soil is highly compressible?

• Organic soils

• Sandy soils

• Gravel soils

• Lacustrine soils