Choose the corect answer 1. The soil transported by running water is called: (a) Alluvial soil (b) Marine soil (c) Acolian soil (d) Lacustrine soil 2. Glacial soils are those soils which are: (a) Deposited in sea water (c) Transported by running water (b) Deposited at the bottom of the lakes (d) None of these 3. The maximum size of grains of silts is about (a) 5 mm 4. Gravel and sand is a (a) Cohesive coarse grained soil (c) Non- Cohesive coarsc grained soil 6. Il the volume to voids is equal to the volume of soil solids, then the values of porosity and void ratio ure respectively (a) 5 and I (b) 2 mm (e) 0.6 mm) (d)I mim (b) Cohesive fine grained soil (d) Non- Cohesive finc grained soil (b) 0 and I (c) 0 and 0.5 (d) I and 0.5 6. Soils are derived from

5.21. If the surface area of a soil is 42 m²/g, determine the minimum soil organic c bon content at which the SOC is the primary sorbent for a. Toluene b. Naphthalene d. Endrin c. TCA tul phthalate

The dry soil is mixed with water (17% by mass) and compacted. The volume of wet soil is 0.001 m3 and has a mass of 1.6 kg. If the specific gravity of the soil solids is 2.70, what is the void ratio?

The liquid limit of the clay soil is 56% and its plasticity index is 15%. The void ratio of this soil at the minimum volume reached on shrinkage is 0.88. a) What is the shrinkage limit, if its grain shrinkage ratio is 2.44? b) Determine the shrinkage index.

Which of the following statements about clays is false? O Clays have the highest permeability values of all soils. Clays have the smallest grain size of all sols. Clays have the largest consolidation settlement of all soils, Clays have the highest moisture content of all soils.

In saturated fine-grained soils, how does the high pore water pressures develop?

A cone penetration test has been conducted, and has measured a cone resistance of 85 kg/cm² at a depth of 10 m. The vertical effective stress at this depth is 150 kPa, and the overconsoliation ratio is 2. The soils at this depth are quartz sands. Compute the relative density, and classify the soil using Table 3.3.

The plastic limit of a soil is 35% and its plasticity index is 10%. When the soil is dried from its plastic state, the volume change is 25% of its volume at plastic limit. Similarly the corresponding volume change from liquid limit to dry state is 32% of its volume at liquid limit. What is the shrinkage ratio of the soil?

A specimen of clay has a water content of 82% and a saturation of 95%. The specific gravity of solids is 2.76. What is the void ratio of this soil? What is the moist density of this soil in kg/m3? Round the answers to five significant figures. Include phase diagram(s).

1. The bulk (moist) unit weight of a soil is 19.1 kN/m³, and the moisture content is 20%. If the specific gravity of the soil solids is 2.75: • For 1 m of this soil, fill the quantities in the block diagram shown below. • What is the void ratio, Ya, and Degree of saturation? • If this soil to be compacted, what is the maximum bulk specific gravity and degree of saturation can we get? Weight Volume Vy = W V W = V = W, V, لقطة شاشة