1. The ratio of the volume of air voids to the volume of voids, is called
Correct : B. air content
2. The coefficient of earth pressure at rest for loose sand is
Correct : B. less than
3. The void ratio for saturated soil is equal to the
Correct : C. product
4. The time factor for a clay layer is
Correct : B. directly proportional to permeability
5. When the soils are carried away by force of gravity, they are known as
Correct : A. transported
6. Which of the following statement is correct?
Correct : D. all of the above
7. The dry density of a soil is 1.5 g/cm3. If the saturation water content is 50%, then its saturated density and submerged density will respectively be
Correct : C. 2.25 g / cm3 and 1.25 g / cm3
8. The value of permeability
Correct : A. depends upon
9. The consistency index is also known as relative consistency.
Correct : A. True
10. The water content ratio of a soil is defined as the ratio of the
Correct : A. weight of water to the weight of solids
11. The direction of seepage is always
Correct : B. perpendicular
12. The void ratio of a soil is defined as the ratio of the
Correct : C. total volume of voids to the volume of soil solids
13. The permissible exit gradient for safety against piping which endanger the stability of a hydraulic structure, should be
Correct : A. 0.2
14. The seepage force in soils is
Correct : D. all of these
15. The process of obtaining increased density of soil in a fill by reduction of its pore space by the expulsion of air, is known as
Correct : C. soil compaction
16. Silt is a
Correct : C. fine grained soil with little or no plasticity
17. The plastic limit exists in
Correct : D. clays
18. Mechanical weathering of soils is caused by
Correct : D. all of these
19. The contact pressure of rigid footing on cohesive soils is
Correct : B. less in the centre than at the edges
20. The critical gradient of the seepage of water
Correct : A. increases
21. The shrinkage index is equal to
Correct : C. liquid limit - shrinkage limit
22. A soil having uniformity co-efficient more than 10, is called
Correct : C. well graded soil
23. The average velocity of flow that will take place through the total cross-sectional area of soil under unit hydraulic gradient is called
Correct : C. coefficient of permeability
24. The rate of consolidation
Correct : A. increases
25. The moisture contents of a clayey soil is gradually decreased from a large value. The correct sequence of the occurrence of the limits will be
Correct : A. liquid limit, plastic limit and shrinkage limit
26. Black cotton soil
Correct : D. all of these
27. The density of sand at which there is no change in volume under the influence of shearing strain produced due to shear stress, is called
Correct : C. critical density
28. A sample of clay and a sample of sand have the same specific gravity and void ratio. Their pemeabilities will differ because
Correct : D. the size ranges of their voids will be different
29. For engineering purposes, soil is defined as
Correct : B. a natural aggregate of mineral grains, loose or moderately cohesive, inorganic or organic in nature
30. The earth pressure at rest is proportional to ? / 1 - ?, where ? = Poisson's ratio of the soil.
Correct : A. Right
31. If the soil below the base of the footing is dry or moist, the confining pressure is approximately
Correct : B. double
32. The suantity of seepage of water in a soil medium is
Correct : C. directly proportional to the coefficient of permeability
33. According to Terzaghi's equation, the bearing capacity of strip footing resting on cohesive soil (c = 10 kN/m2) per unit depth and unit width (assume Nc as 5.7) is
Correct : B. 57 kN/m2
34. The high density of the soil placed in a fill is desired in order to
Correct : D. all of these
35. The total stress is equal to the sum of the effective stress and pore water pressure.
Correct : A. True
36. Which of the following is highly permeable?
Correct : A. Gravel
37. The smallest sieve size according to Indian standards is
Correct : B. 0.045 mm
38. Glacial soils are those soils which are
Correct : D. none of these
39. According to Indian standards, the dispersing solution used in pipette method, for the determination of size of particle consists of
Correct : B. 7 g sodium carbonate, 33 g sodium hexameta-phosphate and 1 litre distilled water
40. A sample of soil has liquid limit 45%, plastic limit 25%, shrinkage limit 17% and natural moisture content 30%. The consistency index of the soil is
Correct : A. 15?20
41. The water content is the ratio of weight of water to the weight of solids.
Correct : A. Yes
42. The ratio of the liquid limit minus the natural content of a soil to its plasticity index, is known as
Correct : D. relative consistency
43. The useful method of finding the shear strength of very plastic cohesive soils is by means of
Correct : C. vane shear test
44. The ratio of settlement at any time (t) to the final settlement is known as
Correct : C. degree of consolidation
45. If ko is the coefficient of earth pressure at rest, ka is the coefficient of active earth pressure, kp is the coefficient of passive earth pressure and ? is Poisson's ratio, then the value of (1 - ?/? is given by
Correct : D. 1 / ko
46. The water content in a soil at which just shear strength develops is called
Correct : A. liquid limit
47. For a given soil mass, the void ratio is 0.60, water content is 18% and specific gravity of the soil particles is 2.6. The degree of saturation of the soil is
Correct : C. 78%
48. The plasticity index is the ratio of liquidity index and flow index.
Correct : B. Wrong
49. By an agriculturist, soil is defined as
Correct : A. the loose mantle at the surface of the earth which favours the growth of plant
50. A dry soil sample weighing 100 g has volume of 60 ml and specific gravity 2.5. Its void ratio is
Correct : B. 0.5
51. When the hydrometer analysis is performed, it requires correction for
Correct : D. all of these
52. In case of coarse grained sand having high permeability and low plasticity, 95% of consolidation occurs within
Correct : A. 1 minute
53. The expansion of soil due to shear at a constant value of pressure is called
Correct : C. dilatancy
54. According to Stoke's law, the velocity at which grains settle out of suspension, all other factors being equal, is dependent upon
Correct : D. all of these
55. According to a geologist, soil is defined as a disintegrated rock.
Correct : A. Agree
56. The unit weight of soil mass is expressed in
Correct : D. N / m3
57. Lacustrine soils are those soils which are
Correct : B. deposited at the bottom of the lakes
58. The term Soil Mechanics was coined by Dr. Karl Tarzaghi.
Correct : A. True
59. According to I.S. code, the total settlement of isolated footings for cohesive soil should be
Correct : B. 40mm
60. Stoke's law is used to determine the
Correct : C. grain size distribution of those soils whose grain size is finer than 0.075 mm
61. The coefficient of consolidation is measured in
Correct : B. cm2/s
62. Which of the following soil is transported by wind?
Correct : B. Loess
63. A flow net is used to determine the
Correct : D. all of these
64. The coefficient of volume compressibility
Correct : B. decreases
65. A fine grained soil
Correct : D. all of these
66. The ratio of the volume of voids to the total volume of soil mass is called
Correct : B. porosity
67. The dry density of a soil is same as the unit weight of solids.
Correct : B. False
68. The coefficient of permeability of slit is
Correct : B. less than
69. A flow line in seepage through a soil medium is defined as the
Correct : A. path of particles of water through a saturated soil mass
70. Toughness index is the ratio of
Correct : B. plasticity index and flow index
71. The density of soil mass is expressed in
Correct : B. kg / m3
72. Which of the following statement is correct?
Correct : D. all of the above
73. Soils are derived from
Correct : D. any one of these
74. The neutral stress on the soil is due to the
Correct : C. weight of water present in soil pores
75. The particle size range is measured by
Correct : C. uniformity coefficient
76. The unit of coefficient of permeability is same as that of velocity.
Correct : A. Yes
77. Which one of the following parameters can be used to estimate the angle of friction of a sandy soil?
Correct : C. Density index
78. Sieve analysis is done if all particles to not pass through square opening of 0.075 mm.
Correct : A. Correct
79. If the volume of voids is equal to the volume of soil solids, then the values of porosity and void ratio are respectively
Correct : C. 0.5 and 1
80. The shear strength of a soil
Correct : D. all of the above
81. The flow index in soils indicates the
Correct : D. shear strength variation with water content
82. The seepage pressure always acts in the direction of flow.
Correct : A. Right
83. Sieving is not practicable for grain sizes smaller than about
Correct : A. 0.075 mm
84. The approximate void ratio in sandy soils is
Correct : B. 0.6
85. According to Indian standards, in a 2 mm sieve
Correct : C. each hole is a square and its side is 2 mm
86. The property of the soil mass which permits the seepage of water through its interconnecting voids, is called
Correct : B. permeability
87. Gravel and sand is a
Correct : C. non-cohesive coarse grained soil
88. The bearing capacity of a soil depends upon
Correct : D. all of these
89. The property of a soil which is of great importance in finding settlement of structures, is
Correct : C. consolidation
90. The degree of saturation for fully saturated soil is
Correct : D. 1
91. The pressure exerted by water on the soil through which it percolates, is known as
Correct : C. seepage pressure
92. Residual soils are
Correct : D. all of these
93. The specific gravity of soil solids is determined by
Correct : A. Pycnometer method
94. The specific gravity of a soil is the ratio of unit weight of soil solids to that of water at a temperature of
Correct : C. 27?C
95. The coefficient of earth pressure at rest for sand compacted in layers is about the same as for stiff clay.
Correct : A. Yes
96. The coefficient of earth pressure at rest for stiff clay is about
Correct : D. 0.8
97. The removal of neutral pressure
Correct : A. increases
98. Which of the following is practically impermeable?
Correct : D. Clay
99. When the soil particles are less than 0.002 mm, the force of gravity on each particle is
Correct : C. negligible
100. The soil transported by running water is called