1. Which one of the following problems is related to the Leaning Tower of Pisa in Italy? (a) Slope instability (b) Weakness in foundation soil (c) Structural instability (d) None of the above 2. N/m³ is the SI unit of (a) weight. (b) unit weight. (c) density. (d) none of the above 3. Physical properties of soil depend on (a) size of soil grains. (b) shape of soil grains. (c) chemical composition of soil grains. (d) all of the above 4. Select the incorrect statement (a) Organic soils are usually found in low-lying areas where the water table is near or above the ground surface. (b) Organic soils are highly compressible. (c) The moisture content of organic soils may range from 200 to 300%. (d) Organic soil deposits are usually encountered in desert areas. 5. A soil in which the particle sizes are distributed over a wide range is termed (a) poorly graded soil. (b) well graded soil. (c) gap graded soil. (d) granular soil. 6. A fully saturated soil is a (a) one-phase system consisting of soil solids. (b) two-phase system consisting of soil solids and air. (c) two-phase system consisting of soil solids and water. (d) three-phase system consisting of soil solids, water and air. 7. Which of the following is not a volume relationship? (a) void ratio (b) porosity (c) degree of saturation (d) water content