Four different soils are classified as CH, ML, SP, and SW, as per the Unified Soil Classification System. Which one of the following options correctly represents their arrangement in the decreasing order of hydraulic conductivity?

Let $$\sigma$$'_v and $$\sigma$$'_h denote the effective vertical stress and effective horizontal stress, respectively. Which one of the following conditions must be satisfied for a soil element to reach the failure state under Rankine's passive earth pressure condition?

Let $$\psi $$ represent soil suction head and K represent hydraulic conductivity of the soil. If the soil moisture content $$\theta$$ increases, which one of the following statements is TRUE?

An uncompacted heap of soil has a volume of 10000 m³ and void ratio of 1. If the soil is compacted to a volume of 7500 m³, then the corresponding void ratio of the compacted soil is __________. (round off to one decimal place)