Question

Expansive soil and cohesivs soil its characterstic

Answer 1

In cohesive soils like loam, clay or silt, the particles in the soil bond to one another. In non-cohesive soils like gravel or sand, the particles lie side by side without bonding
Expansive clay is a clay soil that is prone to large volume changes (swelling and shrinking) that are directly related to changes in water content. Soils with a high content ofexpansive minerals can form deep cracks in drier seasons or years; such soils are called vertisols.