147) The specific gravity of sands, is approximately

148) If the coefficients of volume change and compressibility of a soil sample are respectively 6.75 x 10-2 and 3 x 10-2, the void ratio of the soil sample, is

149) The minimum centre to centre distance of friction piles of 1 m diameter, is

150) Over-consolidation of soils is caused due to

151) Darcy's law is applicable to seepage if a soil is