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MCQs

Total Questions : 73 | Page 7 of 8 pages
Question 61. The total volume of rhombohedron with face angle 60° is _______
  1.    0.5
  2.    0.7071
  3.    0.9099
  4.    1
 Discuss Question
Answer: Option B. -> 0.7071
Answer: (b).0.7071
Question 62. The volume if voids of a rhombohedral array of spherical grains with α=75° is _______
  1.    0.4266
  2.    0.7439
  3.    0.3895
  4.    0.3595
 Discuss Question
Answer: Option C. -> 0.3895
Answer: (c).0.3895
Question 63. The minimum possible void ratio of uniformly graded spherical grains is _______
  1.    0.20
  2.    0.25
  3.    0.30
  4.    0.35
 Discuss Question
Answer: Option D. -> 0.35
Answer: (d).0.35
Question 64. When the natural state of cohesion-less soil is in its loosest form, its density index Iᴅ is equal to ____
  1.    0
  2.    0.5
  3.    1
  4.    1.5
 Discuss Question
Answer: Option A. -> 0
Answer: (a).0
Question 65. The density index of natural deposit in its densest state is ______
  1.    0
  2.    0.5
  3.    1
  4.    1.5
 Discuss Question
Answer: Option C. -> 1
Answer: (c).1
Question 66. A soil has porosity of 30%. Its voids ratio in the loosest and densest state is 0.35 and 0.92 respectively. What will be its density index?
  1.    0.865
  2.    0.872
  3.    0.861
  4.    0.881
 Discuss Question
Answer: Option C. -> 0.861
Answer: (c).0.861
Question 67. The density index Iᴅ in terms of densities is given by ______
  1.    \(\frac{(γ_{d,max}-γ_{d,min}) γ_{d,max}}{(γ_{d,max}-γ_{d}) γ_d}\)
  2.    \(\frac{(γ_d-γ_{d,min}) γ_{d,max}}{(γ_{d,max}-γ_{d,min}) γ_d}\)
  3.    \(\frac{(γ_d-γ_{d,min}) γ_{d,max}}{(γ_d-γ_{d,max}) γ_d}\)
  4.    \(\frac{(γ_d-γ_{d,min}) γ_{d,max}}{(γ_{d,max}-γ_{d}) γ_d}\)
 Discuss Question
Answer: Option B. -> \(\frac{(γ_d-γ_{d,min}) γ_{d,max}}{(γ_{d,max}-γ_{d,min}) γ_d}\)
Answer: (b).\(\frac{(γ_d-γ_{d,min}) γ_{d,max}}{(γ_{d,max}-γ_{d,min}) γ_d}\)
Question 68. The relative density of loose granular soil is given by the range ______ in percentage.
  1.    0-15
  2.    15-35
  3.    35-65
  4.    85-100
 Discuss Question
Answer: Option B. -> 15-35
Answer: (b).15-35
Question 69. A soil has a dry density of 17.5kN/m³. It has densities corresponding to most compact and loosest state as 18.5 kN/m³ and 13 kN/m³ respectively. The relative density of the soil is ______
  1.    0.871
  2.    0.865
  3.    0.869
  4.    0.860
 Discuss Question
Answer: Option B. -> 0.865
Answer: (b).0.865
Question 70. When the soil is in loosest form, density index is zero and its relative compaction Rc is ______
  1.    40%
  2.    60%
  3.    80%
  4.    100%
 Discuss Question
Answer: Option C. -> 80%
Answer: (c).80%

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