McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 51. |
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» C. flow lines and equi-potential lines | |
| 52. |
The unit of coefficient of compressibility is inverse of pressure. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 53. |
In the design of footings on sand, if the angle of internal friction is equal to 36?, the bearing capacity factors for |
| A. | general |
| B. | local |
| Answer» A. general | |
| 54. |
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» D. time rate of settlement | |
| 55. |
The shear strength of a soil in the plastic limit is |
| A. | higher |
| B. | lower |
| Answer» A. higher | |
| 56. |
A sand with greater relative density exhibits |
| A. | smaller |
| B. | larger |
| Answer» B. larger | |
| 57. |
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» D. all of these | |
| 58. |
The angle of shearing resistance for dry loose sand is same as that of angle of internal friction. |
| A. | Right |
| B. | Wrong |
| Answer» A. Right | |
| 59. |
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» D. any one of these | |
| 60. |
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» A. 0.0002 mm | |
| 61. |
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» C. to time and inversely to the square of drainage path | |
| 62. |
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» C. intersecting lines at 90? to each other | |
| 63. |
The effective size of a soil is |
| A. | D10 |
| B. | D20 |
| C. | D40 |
| D. | D60 |
| Answer» A. D10 | |
| 64. |
When the particles of soil are oriented 'edge to edge' or 'edge to face' with respect to one another, the soil is said to have |
| A. | single grained structure |
| B. | double grained structure |
| C. | honey-combed structure |
| D. | flocculent structure |
| Answer» D. flocculent structure | |
| 65. |
The maximum permissible exit gradient is the critical gradient divided by a factor of safety. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 66. |
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» D. all of the above | |
| 67. |
The effect of cohesion on a soil is to |
| A. | reduce both active and passive earth pressure intensities |
| B. | increase both active and passive earth pressure intensities |
| C. | reduce active earth pressure intensity but to increase passive earth pressure intensity |
| D. | increase active earth pressure intensity but to reduce passive earth pressure intensity |
| Answer» C. reduce active earth pressure intensity but to increase passive earth pressure intensity | |
| 68. |
A soil sample is having a specific gravity of 2.60 and a void ratio of 0.78. The water content in percentage required to fully saturate the soil at that void ratio will be |
| A. | 10 |
| B. | 30 |
| C. | 50 |
| D. | 70 |
| Answer» B. 30 | |
| 69. |
The difference between maximum void ratio and minimum void ratio of a sand sample is 0.30. If the relative density of this sample is 66.6% at a void ratio of 0.40, then the void ratio of this sample at its loosest state will be |
| A. | 0.4 |
| B. | 0.6 |
| C. | 0.7 |
| D. | 0.75 |
| Answer» B. 0.6 | |
| 70. |
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» D. 2 to 30 | |
| 71. |
Chemical weathering of soil is caused due to |
| A. | oxidation |
| B. | hydration |
| C. | carbonation and leaching |
| D. | all of these |
| Answer» D. all of these | |
| 72. |
Bulk density of a soil is defined as the ratio of |
| A. | total mass of soil to the total volume of soil |
| B. | weight of water to the weight of solids |
| C. | unit weight of solids to the unit weight of water |
| D. | weight of solid grains to the volume of solids |
| Answer» A. total mass of soil to the total volume of soil | |
| 73. |
The coefficient of consolidation of a soil is affected by |
| A. | compressibility |
| B. | permeability |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» C. both (a) and (b) | |
| 74. |
When water content in a soil is reduced beyond the shrinkage limit, the soil will be in a |
| A. | solid state |
| B. | liquid state |
| C. | semi-solid state |
| D. | plastic state |
| Answer» A. solid state | |
| 75. |
The critical gradient for all soils is normally |
| A. | 0.5 |
| B. | 1 |
| C. | 1.5 |
| D. | 2.5 |
| Answer» B. 1 | |
| 76. |
For a sandy soil, the angle of internal friction is 30?. If the major principal stress is 50 kN/m2 at failure, the corresponding minor principal stress will be |
| A. | 12.2 kN/m2 |
| B. | 16.66 kN/m2 |
| C. | 20.8 kN/m2 |
| D. | 27.2 kN/m2 |
| Answer» B. 16.66 kN/m2 | |
| 77. |
The clays which exhibit high activity |
| A. | contain montmorillonite |
| B. | have high plasticity index |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» C. both (a) and (b) | |
| 78. |
The coefficient of volume compressibility is |
| A. | directly proportional to the void ratio |
| B. | inversely proportional to the void ratio |
| C. | directly proportional to the coefficient of compressibility |
| D. | inversely proportional to the coefficient of compressibility |
| Answer» C. directly proportional to the coefficient of compressibility | |
| 79. |
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» D. theory of elasticity | |
| 80. |
For a perfectly dry soil mass, the degree of saturation is zero |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 81. |
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» D. 10 to 15 m | |
| 82. |
The effective stress on the soil is due to the |
| A. | external load acting on the soil |
| B. | weight of the soil particles |
| C. | weight of water present in soil pores |
| D. | both (a) and (b) |
| Answer» D. both (a) and (b) | |
| 83. |
The moist soil is |
| A. | fully |
| B. | partially |
| Answer» B. partially | |
| 84. |
The maximum water content of a saturated soil at which a reduction in its moisture does not cause a decrease in volume of the soil, is called |
| A. | liquid limit |
| B. | plastic limit |
| C. | elastic limit |
| D. | shrinkage limit |
| Answer» D. shrinkage limit | |
| 85. |
When the water table is close to the ground surface, the bearing capacity of a soil is reduced to |
| A. | one-fourth |
| B. | one-half |
| C. | two-third |
| D. | three-fourth |
| Answer» D. three-fourth | |
| 86. |
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» C. coefficient of volume compressibility | |
| 87. |
The coefficient of passive earth pressure |
| A. | increases |
| B. | decreases |
| C. | does not change |
| Answer» A. increases | |
| 88. |
The neutral stress is |
| A. | transmitted through the points of contact of the interconnected particles of soil. |
| B. | transmitted to the soil base through the pore water |
| C. | independent of the depth of water above the soil mass |
| D. | due to weight of soil particles |
| Answer» B. transmitted to the soil base through the pore water | |
| 89. |
If the pores of a soil are completely full of air only, the soil is said to be |
| A. | wet soil |
| B. | dry soil |
| C. | fully saturated soil |
| D. | partially saturated soil |
| Answer» B. dry soil | |
| 90. |
The soil transported by wind is called |
| A. | aeolian soil |
| B. | marine soil |
| C. | alluvial soil |
| D. | lacustrine soil |
| Answer» A. aeolian soil | |
| 91. |
The earth pressure at rest is defined as the lateral pressure exerted by soil |
| A. | when it is at rest |
| B. | when the retaining wall has no movement relative to the back fill |
| C. | when the retaining wall tends to move away from the back fill |
| D. | when the retaining wall moves into the soil |
| Answer» B. when the retaining wall has no movement relative to the back fill | |
| 92. |
The effective stress is also called pore-water pressure. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 93. |
The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30?, is |
| A. | 1?2 |
| B. | 1?3 |
| C. | 1 |
| D. | 3 |
| Answer» B. 1?3 | |
| 94. |
The rate of expulsion of pore fluid is directly dependent on the |
| A. | shear strength |
| B. | Void ratio |
| C. | permeability |
| Answer» C. permeability | |
| 95. |
Sand is almost non-compressible. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 96. |
The vertical deformation of soil mass consists of |
| A. | deformation of soil grains |
| B. | compression of pore fluid |
| C. | reduction of pore space |
| D. | all of these |
| Answer» D. all of these | |
| 97. |
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» B. zero | |
| 98. |
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» C. liquid limit | |
| 99. |
The effective stress is |
| A. | increases |
| B. | decreases |
| Answer» A. increases | |
| 100. |
The frictional resistance offered by sand is |
| A. | sliding friction |
| B. | rolling friction |
| C. | resistance due to interlocking |
| D. | all of these |
| Answer» D. all of these | |
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