MCQOPTIONS
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MCQOPTIONS
This section includes 204 Mcqs, each offering curated multiple-choice questions to sharpen your Soil Mechanics and Foundations knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The flow index in soils indicates the |
| A. | ratio of liquid limit to plastic limit |
| B. | variation of liquid limit |
| C. | variation of plastic limit |
| D. | shear strength variation with water content |
| Answer» E. | |
| 52. |
The specific gravity of soil solids is determined by |
| A. | Pycnometer method |
| B. | hydrometer analysis |
| C. | sieve analysis |
| D. | all of these |
| Answer» B. hydrometer analysis | |
| 53. |
The unit of coefficient of permeability is same as that of velocity. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 54. |
Residual soils are |
| A. | sands |
| B. | silts |
| C. | clays |
| D. | all of these |
| Answer» E. | |
| 55. |
The particle size range is measured by |
| A. | effective size |
| B. | curvature coefficient |
| C. | uniformity coefficient |
| D. | none of these |
| Answer» D. none of these | |
| 56. |
The removal of neutral pressure |
| A. | increases |
| B. | decreases |
| C. | does not change |
| Answer» B. decreases | |
| 57. |
Sieving is not practicable for grain sizes smaller than about |
| A. | 0.075 mm |
| B. | 0.095 mm |
| C. | 0.15 mm |
| D. | 0.2 mm |
| Answer» B. 0.095 mm | |
| 58. |
The coefficient of earth pressure at rest for stiff clay is about |
| A. | 0.4 |
| B. | 0.5 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» E. | |
| 59. |
The approximate void ratio in sandy soils is |
| A. | 0.2 |
| B. | 0.6 |
| C. | 0.8 |
| D. | 1.2 |
| Answer» C. 0.8 | |
| 60. |
The degree of saturation for fully saturated soil is |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 1 |
| Answer» E. | |
| 61. |
According to Indian standards, in a 2 mm sieve |
| A. | there are two holes |
| B. | each sieve is circular and its diameter is 2 mm |
| C. | each hole is a square and its side is 2 mm |
| D. | there are two holes per cm length of the mesh |
| Answer» D. there are two holes per cm length of the mesh | |
| 62. |
The frictional resistance of clayey soil is |
| A. | less than |
| B. | more than |
| C. | same as |
| Answer» B. more than | |
| 63. |
The unconfined compressive strength of a very hard clay is |
| A. | 10 to 25 kN/m2 |
| B. | 25 to 150 kN/m2 |
| C. | 150 to 400 kN/m2 |
| D. | Above 400 kN/m2 |
| Answer» E. | |
| 64. |
The uniformity coefficient for a uniformly graded soil is nearly unity. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 65. |
The maximum size of grains of silts is about |
| A. | 0.06 mm |
| B. | 0.2 mm |
| C. | 0.5 mm |
| D. | 1 mm |
| Answer» B. 0.2 mm | |
| 66. |
The decrease in voids ratio per unit increse of presure is called |
| A. | coefficient of permeability |
| B. | coefficient of compressibility |
| C. | coefficient of volume compressibility |
| D. | coefficient of curvature |
| Answer» C. coefficient of volume compressibility | |
| 67. |
The plastic limit of a soil is defined as the |
| A. | limit of water that makes the soil to flow |
| B. | amount of water content which makes the soil to go into the liquid state |
| C. | amount of water content which makes the soil to go into the solid state from the liquid state |
| D. | minimum amount of water content which makes the soil to be rolled into 3 mm diameter threads |
| Answer» E. | |
| 68. |
The coefficient of compressibility |
| A. | increases |
| B. | decreases |
| C. | does not change |
| Answer» C. does not change | |
| 69. |
The seepage pressure is independent of the coefficient of permeability. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 70. |
The maximum size of the particles of clay is about |
| A. | 0.0002 mm |
| B. | 0.002 mm |
| C. | 0.02 mm |
| D. | 0.2 mm |
| Answer» C. 0.02 mm | |
| 71. |
The settlement of a footing in sand depends upon the |
| A. | stress deformation characteristics of sand |
| B. | relative density of the sand |
| C. | width of the footing |
| D. | all of these |
| Answer» E. | |
| 72. |
The sensitivity of a normal clay is about |
| A. | 2 to 4 |
| B. | 4 to 8 |
| C. | 8 to 15 |
| D. | 15 to 20 |
| Answer» B. 4 to 8 | |
| 73. |
If the direction of flow of water is parallel to the planes of stratification, then the permeability is |
| A. | 2 to 10 |
| B. | 2 to 15 |
| C. | 2 to 20 |
| D. | 2 to 30 |
| Answer» E. | |
| 74. |
The degree of consolidation is proportional directly |
| A. | to time and inversely to drainage path |
| B. | to drainage path and inversely to time |
| C. | to time and inversely to the square of drainage path |
| D. | to square of drainage path and inversely to time |
| Answer» D. to square of drainage path and inversely to time | |
| 75. |
The effective size of a soil is |
| A. | D10 |
| B. | D20 |
| C. | D40 |
| D. | D60 |
| Answer» B. D20 | |
| 76. |
The ratio of the difference between the void ratio in its loosest state and its natural void ratio to the difference between the voids ratio is the loosest and the densest state, is called |
| A. | density index |
| B. | relative density |
| C. | degree of density |
| D. | any one of these |
| Answer» E. | |
| 77. |
Flow lines and equi-potential lines are |
| A. | perpendicular to each other |
| B. | parallel to each other |
| C. | intersecting lines at 90? to each other |
| D. | intersecting lines at 45? to each other |
| Answer» D. intersecting lines at 45? to each other | |
| 78. |
The shear strength of a soil in the plastic limit is |
| A. | higher |
| B. | lower |
| Answer» B. lower | |
| 79. |
A sand with greater relative density exhibits |
| A. | smaller |
| B. | larger |
| Answer» C. | |
| 80. |
The coefficient of consolidation of a soil is affected by |
| A. | compressibility |
| B. | permeability |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» D. none of these | |
| 81. |
The unit of coefficient of compressibility is inverse of pressure. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 82. |
Stoke's law is applicable to particles upto |
| A. | 0.0002 mm |
| B. | 0.002 mm |
| C. | 0.02 mm |
| D. | 0.2 mm |
| Answer» B. 0.002 mm | |
| 83. |
Which of the following have an influence on the value of permeability? |
| A. | Grain size |
| B. | Void ratio |
| C. | Degree of saturation |
| D. | all of these |
| Answer» E. | |
| 84. |
The flow net in the seepage of water through a soil medium is a network of |
| A. | flow lines |
| B. | equi-potential lines |
| C. | flow lines and equi-potential lines |
| D. | water particles and their movement in the soil |
| Answer» D. water particles and their movement in the soil | |
| 85. |
The ultimate settlement of a soil |
| A. | is directly proportional to the compression index |
| B. | decreases with an increase in the initial void ratio |
| C. | is directly proportional to the depth of the compressible soil mass |
| D. | all of the above |
| Answer» E. | |
| 86. |
The effective stress is also called pore-water pressure. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 87. |
The coefficient of consolidation is used for evaluating |
| A. | stress in the soil |
| B. | total settlement |
| C. | over consolidation ratio |
| D. | time rate of settlement |
| Answer» E. | |
| 88. |
The earth pressure at rest is calculated by using |
| A. | Euler's theory |
| B. | Rankine's theory |
| C. | bending theory |
| D. | theory of elasticity |
| Answer» E. | |
| 89. |
The rate of expulsion of pore fluid is directly dependent on the |
| A. | shear strength |
| B. | Void ratio |
| C. | permeability |
| Answer» D. | |
| 90. |
The moist soil is |
| A. | fully |
| B. | partially |
| Answer» C. | |
| 91. |
When the plastic limit is equal to or greater than the liquid limit, then the plasticity index is |
| A. | negative |
| B. | zero |
| C. | one |
| D. | more than one |
| Answer» C. one | |
| 92. |
When the consistency index is zero, then the soil is at its |
| A. | elastic limit |
| B. | plastic limit |
| C. | liquid limit |
| D. | semi-solid state |
| Answer» D. semi-solid state | |
| 93. |
The soil transported by wind is called |
| A. | aeolian soil |
| B. | marine soil |
| C. | alluvial soil |
| D. | lacustrine soil |
| Answer» B. marine soil | |
| 94. |
The effective stress is |
| A. | increases |
| B. | decreases |
| Answer» B. decreases | |
| 95. |
The clays which exhibit high activity |
| A. | contain montmorillonite |
| B. | have high plasticity index |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» D. none of these | |
| 96. |
The change in volume of soil per unit of initial volume due to a given unit increase in pressure is called |
| A. | coefficient of permeability |
| B. | coefficient of compressibility |
| C. | coefficient of volume compressibility |
| D. | coefficient of curvature |
| Answer» D. coefficient of curvature | |
| 97. |
Sand is almost non-compressible. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 98. |
A civil engineer is concerned mainly with |
| A. | 2 to 5 m |
| B. | 5 to 8 m |
| C. | 8 to 10 m |
| D. | 10 to 15 m |
| Answer» E. | |
| 99. |
The plasticity index is the ratio of liquidity index and flow index. |
| A. | Right |
| B. | Wrong |
| Answer» C. | |
| 100. |
The coefficient of passive earth pressure |
| A. | increases |
| B. | decreases |
| C. | does not change |
| Answer» B. decreases | |