Hygroscopic water is retained in soil at

A. 15 bar

B. 1000 bar

C. 31 bar

D. 0.3 bar

Answer: Option C

Solution(By Examveda Team)

Hygroscopic water is the water found on the soil as an extremely thin tightly held film around the soil particles, it is absorbed as moisture from the air. It is found not only in pores but also on the surface of soil particles. It can be retained from the soil by over drying at 105 degrees Celsius and pressure at 31 bar.