Shear strength of soil is a very important property in geotechnical engineering, in order to study the strength of soils. According to classical soil mechanics, the soil is generally assumed to be either fully saturated or completely dry conditions. However, 40% of the natural soil on the earth’s surface encountered as an unsaturated/partially saturated condition. The problems faced at the time of designing the retaining structures, considering the soil mass in dry condition, affects in reducing the factor of safety of the slope due to wetting/drying conditions. The present study aims to investigate the loss/gain in the strength of the soils during the wetting and drying process, and it was observed that the strength is higher in drying path than that of wetting path.