CM 3335 Final Exam Review Questions With Answers Well Elaborated.

The density of soil particles and the density of soil mass mean the same thing. (T/F)? - correct answer False What does specific gravity mean? (A) The ratio between the unit weight (or density) of a material and the unit weight (or density) of water at 4 degrees Celsius. (B) The ratio between the unit weight (or density) of water at 4 degrees Celsius and the unit weight (or density) of a material. (C) None of the above (D) All of the above - correct answer (A) The ratio between the unit weight (or density) of a material and the unit weight (or density) of water at 4 degrees Celsius. Among absolute specific gravity, apparent specific gravity, and bulk specific gravity measured for the solids of a certain soil, which does have the greatest quantity measured? (A) Absolute specific gravity (B) Apparent specific gravity (C) Bulk specific gravity (D) Any of the above (E) None of the above - correct answer (A) Absolute specific gravity Which kind of structure of clay soils is most likely to be for the clay soils found on the bottom of the Lake of Michigan? (A) Dispersed (B) Flocculated (C) Any of the above (D) None of the above (E) All of the above - correct answer (A) Dispersed Which kind of the structure of clay soils is most likely to be for the clay soils found on the bottom of the Gulf of Mexico? (A) Dispersed (B) Flocculated (C) Any of the above (D) None of the above (E) All of the above - correct answer (B) Flocculated Which kind of rock will bedding planes be found? (A) Sedimentary rocks (B) Igneous rocks (C) Metamorphic rocks (D) Any of the above (E) None of the above (F) All of the above - correct answer (A) Sedimentary rocks In many soil-engineering problems, the shear strength of the soil emerges as one of its most important characteristics. The applications of soil's shear strength may include: (A) Stability of slopes (B) Ultimate bearing capacity of a footing (C) Lateral soil pressure against retaining walls (D) Skin friction of piles (E) All of the above - correct answer (E) All of the above The shear strength of the soil may be attributed to: (A) Frictional resistance to sliding between solid particles (B) Cohesion and adhesion between soil particles (C) Interlocking and bridging of soil particles to resist deformation (D) All of the above - correct answer (D) All of the above What is the size for boulders? a. = 12" b. 11" c. 8" d. 9" - correct answer a. = 12" What is the size separating cobbles from gravels? a. 3" b. 4" c. 5" d. 6" - correct answer a. 3" What is the size separating gravels from sands? a. #200 sieve size b. #4 sieve size c. Both a and b d. None - correct answer b. #4 sieve size What is the size separating fine-grained soils (e.g. silts, clay) from coarse-grained soils (e.g. sands, gravels)? a. #200 sieve size b. #4 sieve size c. Both a and b d. None - correct answer a. #200 sieve size What is it called that the fine-grained soils' water content separating their liquid state from plastic state? a. Liquid limit (LL) b. Plastic limit (PL) c. Plasticity index (PI) - correct answer a. Liquid limit (LL) The behavior of silts and clays may be inferred from the shape, size, and density of packing of the constituent particles. (T/F)? - correct answer False The behavior of sands and gravels is more nearly controlled by surface activity of the particles and in particular interaction of the particles with water. (T/F)? - correct answer False The particle size distribution curve is very important for understanding the characteristics of coarse-grained soils. (T/F)? - correct answer True Plasticity is very important for understanding the characteristics of fine-grained soils. (T/F)? - correct answer True Frost heaving in soils occurs in: a. One phase b. Two phases c. Three phases d. Four phases - correct answer b. Two phases Factors influencing frost action are: a. Frost susceptible soil b. Depressed temperature below freezing point c. Supply of water d. All the above - correct answer d. All the above Which of the following is/are not the effects of frost action? a. Raising in pavement surface b. Decrease in load carrying capacity of sub grade soil. c. Undulations and considerable damages to the pavement. d. None of the above - correct answer d. None of the above Which kind of weathering produces clayey soils? a. Mechanical (physical) weathering b. Frost weathering c. Differential weathering d. Chemical weathering - correct answer d. Chemical weathering What is plastic limit (PL)? Plastic limit is (A) Liquid state of fine-grained soil consistency (B) The water content of fine-grained soils between semisolid and plastic states (C) Plastic state of fine-grained soil consistency (D) Semisolid state of fine soil-grained consistency - correct answer (B) The water content of fine-grained soils between semisolid and plastic states What is liquid limit (LL)? Liquid limit is (A) Liquid state of fine-grained soil consistency (B) The water content of fine-grained soil between liquid and plastic states (C) Plastic state of fine-grained soil consistency (D) Semisolid state of fine-grained soil consistency. - correct answer (B) The water content of fine-grained soil between liquid and plastic states What is plastic index (PI)? (A) The value of LL - PL (B) The value of PL - LL (C) The value of PL + LL (D) The value of PL * LL - correct answer (A) T