1. The plasticity of fine soils may be assessed by means of
Correct : D. All of these
2. Pick up the correct statement from the following:
Correct : B. Silty clayloam contains highest percentage of silt
3. For general engineering purposes, soils are classified by
Correct : D. Unified soil classification system
4. Water content of soil can
Correct : D. Be greater than 100 %
5. Pick up the correct statement from the following:
Correct : B. Failure plane does not carry maximum shear stress
6. The phreatic line in an earth dam may be
Correct : C. Parabolic
7. If the voids of a soil mass are full of air only, the soil is termed as
Correct : C. Dry soil
8. On wetting, cohesive soils,
Correct : D. Decrease their shear strength
9. A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is
Correct : D. 95.7 %
10. Select the correct range of density index, ID
Correct : D. 0 < ID < 1
11. A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the void ratio, is
Correct : C. 0.862
12. If the specific gravity and voids in soil sample are G and e respectively, the hydraulic gradient i,
is
Correct : A. (G - 1)/(1 + e)
13. In a flow net
Correct : A. Flow lines and equipotential lines cross each other at right angles
14. Which of the following methods is most accurate for the determination of the water content
of soil?
Correct : A. Oven drying method
15. The reduction in volume of soil due to squeezing out of water from the voids, is termed
Correct : D. All the above
16. Which of the following statements is correct?
Correct : D. None of the above
17. The water content of soil, which represents the boundary between plastic state and liquid state,
is known as
Correct : A. Liquid limit
18. The specific gravity of Calcite is
Correct : B. 2.72
19. The direct shear test suffers from the following disadvantage:
Correct : C. Shear stress on the failure plane is not uniform
20. The clay mineral with the largest swelling and shrinkage characteristics is
Correct : C. Montmorillonite
21. The length/diameter ratio of cylindrical specimens used in triaxial test, is generally
Correct : C. 2
22. The maximum load carried by a pile, when it continues to sink without further increase of load, is known as
Correct : D. All the above
23. The seepage exit gradient in a soil is the ratio of
Correct : D. Head loss to the length of the seepage
24. Which of the following methods is more suitable for the determination of permeability of clayey soil?
Correct : B. Falling head method
25. A structure is erected on an impervious clay whose thickness is 12 m. Drainage is possible both at upper and lower surfaces. Coefficient of consolidation is 0.015 cm2 per minute. For attaining 50% consolidation with a time factor 0.20, the number of days required
Correct : C. 33331
26. The ratio of the difference between the void ratio of the soil in its loosest state and its natural void ratio (e) to the difference between the void ratios in the loosest and fully dense state, is generally termed as
Correct : D. All the above
27. For determining the ultimate bearing capacity of soil, the recommended size of a square bearing plate to be used in load plate test should be 30 to 75 cm square with a minimum thickness of
Correct : D. 25 mm
28. Within the consolidation process of a saturated clay
Correct : B. A gradual decrease in neutral pressure and a gradual increase in effective pressure take place and sum of the two is constant
29. An unsaturated 100 cm3 sample of soil weighs 190 g. If its dried weight is 160 g, water
content of the soil, is
Correct : A. 0.188
30. Pick up the correct statement from the following:
Correct : D. All the above
31. Pick up the correct statement from the following:
Correct : D. All the above
32. Select the correct statement.
Correct : A. Coefficient of compressibility of an over-consolidated clay is less than that of a normally consolidated clay
33. Pick up the correct statement from the following:
Correct : D. All the above
34. Compression of soil occurs rapidly if voids are filled with
Correct : A. Air
35. For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as
Correct : B. Wet of OMC and dry of OMC
36. Chemical weathering of soil is caused due to
Correct : D. All the above
37. According to IS : 2720 - 1965, the composition of a dispersing solution used in pipette analysis for determining the size of particles, is
Correct : A. sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre
38. The minimum depth of building foundations on
Correct : D. All the above
39. The effect of cohesion on a soil is to
Correct : C. Reduce the active earth pressure intensity but to increase the passive earth pressure intensity
40. If voids ratio is 0.67, water content is 0.188 and specific gravity is 2.68, the degree of
saturation of the soil, is
Correct : D. 75 %
41. Pick up the incorrect statement from the following:
Correct : D. None of these
42. A soil mass coated with a thin layer of paraffin weighs 460 g. When immersed, it displaces 299 cc of water. The weight of paraffin is 10 g. If specific gravity of solids is 2.5 and that of paraffin 0.9, the void ratio of soil, is
Correct : B. 0.60
43. Select the incorrect statement.
Correct : A. Bearing capacity of a soil depends upon the amount and direction of load
44. Over-consolidation of soils is caused due to
Correct : D. All the above
45. The consistency index of a soil is defined as the ratio of
Correct : B. Liquid limit minus the natural water content to the plasticity index of the soil
46. Which of the following types of soil is transported by gravitational forces?
Correct : B. Talus
47. Soil classification of composite soils, exclusively based on the particle size distribution, is known
Correct : B. Textural classification
48. When the degree of saturation is zero, the soil mass under consideration represents
Correct : B. Two phase system with soil and air
49. Pick up the cohesive soil from the following:
Correct : C. Black cotton soil
50. For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass?
Correct : D. Calcium carbide method
51. The internal molecular attraction of a soil, the cohesion
Correct : C. Is more in well compacted clays
52. Which of the following is a measure of particle size range?
Correct : B. Uniformity coefficient
53. If Nf, Nd and H are total number flow channels, total number of potential drops and total hydraulic head differences respectively, the discharge q through the complete flow is given by (where K is a constant)
Correct : C. q = KH (Nf/Nd)
54. A failure wedge develops if a retaining wall
Correct : A. Moves away from the backfill
55. The admixture of coarser particles like sand or silt to clay causes
Correct : C. Decrease in both liquid limit and plasticity index
56. A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.6. If the moisture content in the soil is 20%, the degree of saturation is
Correct : C. 92 %
57. The shearing strength of a cohesion-less soil depends upon
Correct : C. Confining pressure
58. Sand particles are made of
Correct : A. Rock minerals
59. The water content of soil is defined as the ratio of
Correct : D. Weight of water to weight of solids of given mass of soil
60. A critical hydraulic gradient may occur when
Correct : D. All the above
61. Which of the following methods is best suited for determination of permeability of coarsegrained soils?
Correct : A. Constant head method
62. Back fill with a sloping surface exerts a total active pressure Pa on the wall of height H and acts at
Correct : C. H/3 above the base parallel to base
63. The slope of isochrone at any point at a given time indicates the rate of change of
Correct : C. Pore water pressure with depth
64. The ratio of the volume of water present in a given soil mass to the total volume of its
voids, is known
Correct : D. Degree of saturation
65. A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is
Correct : C. 2.0 g/cm3
66. The total active earth pressure due to dry back fill with no surcharge, acts at H/3 above the base of the wall and is directly proportional to
Correct : C. H2
67. Coefficient of consolidation for clays normally
Correct : A. Decreases with increase in liquid limit
68. The maximum dry density upto which any soil can be compacted depends upon
Correct : C. Both moisture content and amount of compaction energy
69. For determine the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled = 850 g water filled in pycnometer up to top The specific gravity of soil solids, is
Correct : C. 2.50
70. If there is no impervious boundary at the bottom of a hydraulic structure, stream lines tend
to follow:
Correct : C. A semi-ellipse
71. If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the
cracks to the horizontal is
Correct : B. 45°
72. The Westergaard analysis is used for
Correct : C. Stratified soils
73. Cohesive soils are generally
Correct : A. Plastic and also compressible
74. The ratio of the volume of voids to the total volume of the given soil mass, is known
Correct : A. Porosity
75. The total weight of a pycnometer with water and oven dried soil 20 ( g) is 1600 g. The pycnometer filled with water alone weighs 1500 g. The specific gravity of the soil, is
Correct : C. 2.0
76. In the plate loading test for determining the bearing capacity of soil, the size of square
bearing plate should be
Correct : B. Between 300 mm and 750 mm
77. If the specific gravity of a soil particle of 0.05 cm diameter is 2.67, its terminal velocity while settling in distilled water of viscosity, 0.01 poise, is
Correct : D. 0.2275 cm/sec
78. The shear strength in plastic undrained clay, is due to
Correct : C. Cohesion
79. A fully saturated soil is said to be
Correct : C. Two phase system with soil and water
80. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio respectively are
Correct : C. 0.5 and 1.0
81. The compressibility of clays is caused due to:
Correct : D. All the above
82. Sedimentation analysis is based on the assumption:
Correct : D. All the above
83. A pycnometer is used to determine
Correct : C. Water content and specific gravity
84. The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated
Correct : B. Clays
85. When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported
Correct : B. Zero
86. Flow net is used for the determination of
Correct : D. All the above
87. The inventor of the term soil mechanics, was
Correct : B. Dr. Karl Terzaghi
88. Highway Research Board (HRB) classification of soils is based on
Correct : C. Both particle size composition and plasticity characteristics
89. Stoke's law does not hold good if the size of particle is smaller than
Correct : A. 0.0002 mm
90. Quick sand is a
Correct : A. Type of sand
91. Pick up the correct statement from the following:
Correct : D. All the above
92. A saturated soil sample has water content of 40% and specific gravity of soil particles 2.7. The
void ratio of the soil, is
Correct : C. 1.08
93. The total discharge from two wells situated near to each other is
Correct : B. Less than the sum of the discharges from individual wells
94. A sample of saturated soil has 30% water content and the specific gravity of soil grains is 2.6. The dry density of the soil mass in g/cm3, is
Correct : D. None of these
95. Compressibility of sandy soils is
Correct : C. Much less than that of clayey soils
96. Depending upon the properties of a material, the failure envelope may
Correct : D. All the above
97. The maximum pressure which a soil can carry without shear failure, is called
Correct : A. Safe bearing capacity
98. In a deposit of normally consolidated clay
Correct : C. Effective stress and undrained strength increase with depth but water content decreases with depth
99. A moist soil sample weighing 108 g has a volume of 60 cc. If water content is 25% and value of G = 2.52, the void ratio is
Correct : C. 0.75
100. For slopes of limited extent the surface of slippage, is usually along