Principles of Soil Mechanics questions with correct answers

A clay soil has a liquid limit of 60%, a plastic Limit of 20% and a natural, in situ water content of 25%, The clay in the natural, in situ state would likely: a) be normally consolidated b) have a high compressibility c) have a stiff consistency d) have a soft consistency CORRECT ANSWER have a stiff consistency An Aeolian soil is a soil which is formed by: a) deposition of soil particles along or a base of a slope by gravity b) transportation and deposition of soil particles by wind c) erosion and weathering of parent materials in place d) deposition by flowing water in a stream or river CORRECT ANSWER transportation and deposition of soil particles by wind Clay minerals are formed by the movement and crushing action of glacier ice. True or False CORRECT ANSWER False Clay soils have plastic properties because they contain a high percentage of fines (particles smaller than the #200 sieve (0.075mm)) True or False CORRECT ANSWER False Clay minerals are formed by chemical weathering of rock minerals