Question

Define capillary water, hygroscopic water and combined water.

Answer 1

Hint: The capillary water hygroscopic water and combined water is considered at the water which is observed in the soils. These Three are considered as the types of water in the soil, altogether there are four types of water which can be observed in the soil but these three types are the ones which are more frequently and easily identified in the soil water mechanism.

Complete answer:
Capillary water: The capillary water is considered as a stored water in the soil the water in the soil leaves from the upper layer even after loss there are some small soil particles which carry the small drops of water in it and it is called capillary water. The capillary water can be found in the soil even after the complete drain because a little or small amount will be present in the soil to keep up the moisture.

Hygroscopic water: This type is observed when the soil particles undergo evaporation, during this the soil loses its Moisture content by using large amounts of water from it. The capillary water which is the storage water will also be lost during this water loss where the least amount of water which is in the soil will be drained and During this time the water will be present in the form of thin films which is held by the soil particles or between the soil particles by the absorption mechanism such water formation observed in the thin films of soil is called as hygroscopic water.

Combined water: During this condition the capillary water and hygroscopic water will be completely drain from the soil and during the complete loss of water the hygroscopic water will change its least water content into a chemical compound where the water is supported chemically to soils this is called as capillary water This is called as capillary water.

Note: These three types of water conditions are observing all the soil particles which are mechanised to lose their water content in the form of heat at high temperature or by the evaporation or by the uptake or intake of the plants that are true roots.