Question

write an account on chemical properties of soil

Answer 1

Chemical Properties of Soil

pH
Salinity (EC)
Cation exchange capacity (CEC)
Organic matter
C:N ratio (Carbon to Nitrogen)

Answer 2

The chemical properties of soil depend on two main constituents, namely:

1. Inorganic Compounds  
2. Organic Compounds.

Inorganic Compounds:

Inorganic compounds are derived from the minerals and chemicals from the parent rock of the soil which underwent weathering and alternations to form the present day soil.

Organic Compounds:

Organic compounds are derived from the dead decaying matter of the soil like insects, leaves, etc. Organic compound when comes in contact with inorganic compounds and in the presence of abiotic conditions like rainfall, temperature, and sunlight they form the topsoil called humus.  

The name a few primary minerals are quartz, feldspar, tourmaline, muscovite, etc. and to name a few secondary minerals are hematite, gibbsite, calcite. Depending on the mineral constitution of soil it can be categorised as acidic soils and alkaline soils. Each soil type has flora and fauna suited individually.