ANDREW S.REBUYAS BSCE - 4A CIVIL ENGINEERING REVIEWER SOIL AND FOUNDATION 1) A fully saturated soil is said to be a. two phase system with soil and air b. three phase system c. one phase system d. two phase system with soil and water 2) In hydrometer analysis for a soil mass a. both meniscus correction and dispersing agent correction are additive b. meniscus correction is additive and dispersing agent correction is subtractive. c. meniscus correction is subtractive and dispersing agent correction is additive d. both meniscus correction and dispersing agent correction are subtractive 3) Stoke’s Law is valid only if the size of particle is a. greater than 0.2 mm b. less than 0.0002 mm c. between 0.2 mm and 0.0002 mm d. all of the choices 4) If the plasticity index of the of a soil mass is zero, the soil is a. sand b. clay c. silt d. clayey silt 5) Select the correct statement a. A uniform soil has more strength and stability than a non-uniform soil. b. Uniformity coefficient does not affect strength and stability. c. A uniform soil has less strength and stability than a non-uniform soil. d. Uniformity coefficient of a poorly graded soil is more than that of a well graded soil. 6) The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in a. the method of taking observations b. the method of preparation of soil suspension c. the principle of test d. all of the choices 7) If the volume of voids is equal to the volume of solids in a soil mass, then the values decrease in liquid limit and increase in plasticity index d.5 c. decrease in liquid limit and no change in plasticity index b.0 and 0. which of the following method is best suited for quick determination of water content of a soil mass? a. zero d.0 and 0. be less than 0% d. be greater than 100% b. 0. same shear strength of large magnitude c. calcium carbide method d. always less than 1 14) Select the correct range of density index. alcohol method c. 0. always equal to 1 b. ID > 0 . one b. different shear strengths of small magnitude 12) The admixture of coarser particles like sand or silt to clay causes a. different shear strengths of large magnitude b. equal to or less than 1 d.of porosity and void ratio respectively are a. decrease in both liquid limit and plasticity index c. take values only from 0% to 100% c.5 and 1. same shear strength of small magnitude d. increase in both liquid limit and plasticity index 13) Uniformity coefficient of a soil is a.0 and 1.0 d. all soils possess a. 1.0 8) For proper field control. oven drying method 9) When the plastic limit of a soil is greater than the liquid limit. non-plastic (NP) c. ID a. never be greater than 100% 11) At liquid limit. sand bath method b. 1.0 b. equal to or greater than 1 c. then the plasticity index is reported as a. negative 10) Water content of soil can a. between 0 and 1 c. none of the choices 17) A pycnometer is used to determine a. montmorillonite c. ID > 1 c. void ratio and dry density c. face-to-face or parallel orientation c. all of the choices 16) The clay mineral with the largest swelling and shrinkage characteristics is a. 0 < ID <1 d. illite d. face-to-edge orientation d.0 kN/m3 21) Rise of water table in cohesionless soils up to ground surface reduces the net ultimate bearing capacity approximately by a. kaolinite b. a physical parameter that can be measured b. The dry density of soil is a. greater than 1 b.b. 22. all of the choices 19) If the sand in-situ is in its densest state. water content and specific gravity b. the stress at particles in contact d. water content and void ratio 18) Dispersed type of soil structure is an arrangement comprising particles having a. zero d.2 kN/m3 b. 20. none of the choices 15) Effective stress is a.0 kN/m c. specific gravity and dry density d. 75% b. important because it is a function of engineering properties of soil c. one 20) A soil has a bulk density of 22 kN/m3 and water content of 10%. then the relative density of sand is a. 25% .6 kN/m3 d. 18. edge-to-face orientation b. 23. plastic state c. more at edges compared to middle c. clay c. uniform throughout d.4 b. none of the choices 23) Void ratio of a soil mass can a. 50% 22) Contact pressure beneath a rigid footing resting on cohesive soil is a.20 27) Which of the following soils as more plasticity index? a. take any value greater than zero d. solid state 26) Relative density of compacted dense sand is approximately equal to a. 0.95 c. 0. 25) If the natural water content of soil mass lies between its liquid limit and plastic limit. total stress is reduced due to increase in pore water pressure only but effective stress does not change d. take values between 0 and 1 only c. effective stress is reduced due to decrease in total stress only but pore water pressure does not change c. then the a. 0. the soil mass is said to be in a. liquid state d. silt 28) If the degree of saturation of a partially saturated soil is 60%. effective stress is reduced due to increase in pore water pressure only but total stress does not change. never be greater than unity b. total stress is increased due to decease in pore water pressure but effective stress does not change b. 1. 90% d. then air content of . none of the choices 24) If the water table rises up to ground surface. semi-solid state b. sand d. gravel b.c. less at edges compared to middle b.6 d. decrease in pore water pressure but increase in total stress c. then a. plasticity index to consistency index d. the liquid limit of soil always decreases b. 1. dry soil 34) Toughness index is defined as the ratio of a. consistency index to liquidity index 35) Which of the following type of soil is transported by gravitational forces? a.the soil is a. equal increase in pore water pressure and total stress d. 2. specific gravity 2. the liquid limit of soil may decrease c. air entrained soil d. illite c. montmorillonite b. decrease in pore water pressure but increase in total stress 32) The hydraulic head that would produce a quick condition in a sand stratum of thickness 1. liquidity index to flow index c. the soil is termed as a. kaolinite d. 80% d.0 m d. 3. dehydrated soil b.0 m c. 40% 29) If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber. plasticity index to flow index b.0 m b. talus . the liquid limit of soil may increase 30) Sand particles are made of a.5 m 33) If the voids of a soil mass are full of air only. 60% b. equal decrease in pore water pressure and total stress b. 100% c. partially saturated soil c.67 and voids ratio 0.67 is equal to a.5 m. rock minerals 31) Rise of water table above the ground surface causes a. 1. the liquid limit of soil always increases d. porosity d. void ratio 41) According to Atterberg. sand bath method c. n > 0 c. drift c. dune sand d. particle size composition b. the percentage of voids. 0 < PI < 7 c. 7 < PI < 17 42) Which of the following is a measure of particle size range? a. effective size . air content c. calcium carbide method d. 17 < PI < 27 b. oven drying method 37) Highway Research Board (HRB) classification of soils is based on a. less than specific gravity of soil 39) Valid range for n. pycnometer method b. the soil is said to of medium plasticity if the plasticity index PI is a. plasticity characteristics c. then the void ratio of the sample is a. loess 36) Which of the following methods is most accurate for the determination of the water content of soil? a.b. none of the choices 40) The ratio of volume of voids to the total volume of soil mass is called a. PI > 27 d. percentage air voids b. n < 0 d. greater than specific gravity of soil c. independent of specific gravity of soil d. equal to specific gravity of soil b. is a. both particle size composition and plasticity characteristics d. 0 < n < 100 b. none of the choices 38) If the water content of a fully saturated soil mass is 100%. coefficient of curvature b. SL b. two phase system with soil and water c. c. plastic limit b. is known as a.c. both uniformity coefficient and coefficient of curvature are nearly unity. one phase system 44) Which of the following statements is correct? a. water c. shrinkage limit d. plasticity index 49) The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively . S > 0 c. which represents the boundary between plastic and liquid state. glaciers b. MH 48) The water content of soil. S < 0 d. ML c. none of the choices 46) Valid range for S. CH d. two phase system with soil and air b. three phase system d. the soil mass under consideration represents a. Uniformity coefficient represents the shape of the particle size distribution curve. the degree of saturation of soil in percentage is a. For a well graded soil. wind d. liquid limit c. none of the choices 47) Inorganic soil with low compressibility are represented by a. none of the choices 45) Residual soils are formed by a. uniformity coeficient 43) When the degree of saturation is zero. A soil is said to be well graded if it has most of the particles of about the same size. d. b. none of the choices d. 0 < S < 100 b. b. d. c. Unit weight of soil increases due to submergence in water. dry unit weight is less than total unit weight.5 kg/cm2 none of the choices Select the correct statement a. . b. For dry soils. c.5 kg/cm2 and zero 50 kg/cm2 and 0. 50) zero and 50 kg/cm2 0.a. Unit weight of dry soil is greater than unit weight of wet soil. Unit weight of soil decreases due to submergence in water. d.