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MCQs

Total Questions : 1204 | Page 6 of 121 pages
Question 51. A pycnometer is used to determine
  1.    water content and voids ratio
  2.    specific gravity and dry density
  3.    water content and specific gravity
  4.    voids ratio and dry density
 Discuss Question
Answer: Option C. -> water content and specific gravity
Question 52. Effective stress on soil
  1.    Increases voids ratio and decreases permeability
  2.    Increases both voids ratio and permeability
  3.    Decreases both voids ratio and permeability
  4.    Decreases voids ratio and increases permeability
 Discuss Question
Answer: Option C. -> Decreases both voids ratio and permeability
Question 53. Relative density of a compacted dense sand is approximately equal to
  1.    0.4
  2.    0.6
  3.    0.95
  4.    1.20
 Discuss Question
Answer: Option C. -> 0.95
Question 54. If the plasticity index of a soil mass is zero, the soil is
  1.    sand
  2.    silt
  3.    clay
  4.    clayey silt
 Discuss Question
Answer: Option A. -> sand
Question 55. Stoke’s law is valid only if the size of particle is
  1.    less than 0.0002 mm
  2.    greater than 0.2 mm
  3.    between 0.2 mm and 0.0002 mm
  4.    all of the above
 Discuss Question
Answer: Option C. -> between 0.2 mm and 0.0002 mm
Question 56. The hydraulic head that would produce a quick condition in a sand stratum of thickness 1.5 m, specific gravity 2.67 and voids ratio 0.67 is equal to
  1.    1.0m
  2.    1.5m
  3.    2.0m
  4.    3m
 Discuss Question
Answer: Option B. -> 1.5m
Question 57. Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same degree of consolidation is
  1.    3 months
  2.    6 months
  3.    12 months
  4.    24 months
 Discuss Question
Answer: Option A. -> 3 months
Question 58. Degree of consolidation is
  1.    directly proportional to time and inversely proportional to drainage path
  2.    directly proportional to time and inversely proportional to square of drainage path
  3.    directly proportional to drainage path and inversely proportional to time
  4.    directly proportional to square of drainage path and inversely proportional to time
 Discuss Question
Answer: Option B. -> directly proportional to time and inversely proportional to square of drainage path
Question 59. Select the correct range of density index,1D
  1.    1D > 0
  2.    ID > 0
  3.    0 < 1D < 1
  4.    0 ≤ 1D ≤ 1
 Discuss Question
Answer: Option D. -> 0 ≤ 1D ≤ 1
Question 60. For a loose sand sample and a dense sand sample consolidated to the same effective stress
  1.    ultimate strength is same and also peak strength is same
  2.    ultimate strength is different but peak strength is same
  3.    ultimate strength is same but peak strength of dense sand is greater than that of loose sand
  4.    ultimate strength is same but peak
 Discuss Question
Answer: Option C. -> ultimate strength is same but peak strength of dense sand is greater than that of loose sand

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