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MCQs

Total Questions : 1204 | Page 4 of 121 pages
Question 31. The ultimate consolidation settlement of a structure resting on a soil
  1.    Decreases with the increase in the initial voids ratio
  2.    Decreases with the decrease in the plastic limit
  3.    Increases with the increase in the initial voids ratio
  4.    Increases with the decrease in the porosity of the soil
 Discuss Question
Answer: Option A. -> Decreases with the increase in the initial voids ratio
Question 32. The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is
  1.    1/3
  2.    3
  3.    1
  4.    1/2
 Discuss Question
Answer: Option A. -> 1/3
Question 33. The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is
  1.    Vertical if the soil is in an active state of plastic equilibrium
  2.    Vertical if the soil is in a passive state of plastic equilibrium
  3.    Inclined at 45° to the vertical plane
  4.    None of the above
 Discuss Question
Answer: Option A. -> Vertical if the soil is in an active state of plastic equilibrium
Question 34. In hydrometer analysis for a soil mass
  1.    both meniscus correction and dispersing agent correction are additive
  2.    both meniscus correction and dispersing agent correction are subtractive
  3.    meniscus correction is additive and dispersing agent correction is subtractive
  4.    meniscus correction is subtractive and dispersing agent correction is additive
 Discuss Question
Answer: Option C. -> meniscus correction is additive and dispersing agent correction is subtractive
Question 35. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on
  1.    horizontal plane only
  2.    vertical plane only
  3.    both horizontal and vertical planes
  4.    all planes except horizontal and vertical planes
 Discuss Question
Answer: Option D. -> all planes except horizontal and vertical planes
Question 36. Skempton’s pore pressure coefficient B for saturated soil is
  1.    1
  2.    zero
  3.    between 0 and 1
  4.    greater than 1 [CS 95]
 Discuss Question
Answer: Option A. -> 1
Question 37. According to IS classification, the range of silt size particles is
  1.    4.75 mm to 2.00 mm
  2.    2.00 mm to 0.425 mm
  3.    0.425 mm to 0.075 mm
  4.    0.075 mm to 0.002 mm
 Discuss Question
Answer: Option D. -> 0.075 mm to 0.002 mm
Question 38. If the voids of a soil mass are full of air only, the soil is termed as
  1.    air entrained soil
  2.    partially saturated soil
  3.    dry soil
  4.    dehydrated soil
 Discuss Question
Answer: Option C. -> dry soil
Question 39. Highway Research Board (HRB) classification of soils is based on
  1.    particle size composition
  2.    plasticity characteristics
  3.    both particle size composition and plasticity characteristics
  4.    none of the above
 Discuss Question
Answer: Option C. -> both particle size composition and plasticity characteristics
Question 40. Coarse grained soils are best compacted by a
  1.    drum roller
  2.    rubber tyred roller
  3.    sheep’s foot roller
  4.    vibratory roller
 Discuss Question
Answer: Option D. -> vibratory roller

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