MCQOPTIONS
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MCQOPTIONS
This section includes 94 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Rise of water table in cohesion-less soils upto ground surface reduces the net ultimate bearing capacity approximately by |
| A. | 25 % |
| B. | 50 % |
| C. | 75 % |
| D. | 90 % |
| Answer» C. 75 % | |
| 52. |
The compression resulting from a long term static load and consequent escape of pore water,is known as |
| A. | Compaction |
| B. | Consolidation |
| C. | Swelling |
| D. | None of these |
| Answer» C. Swelling | |
| 53. |
The shear resistance of a soil is constituted basically of the following component. |
| A. | The frictional resistance to translocation between the individual soil particles at their contact point |
| B. | To the structural relation to displacement of the soil because of the interlocking of the particles |
| C. | Cohesion and adhesion between the surfaces of the soil particles |
| D. | All the above |
| Answer» E. | |
| 54. |
A triaxial shear test is preferred to direct shear test, because |
| A. | It can be performed under all three drainage conditions with complete control |
| B. | Precise measurement of pore pressure and change in volume during test, is not possible |
| C. | Stress distribution on the failure plane, is non uniform |
| D. | None of these |
| Answer» B. Precise measurement of pore pressure and change in volume during test, is not possible | |
| 55. |
The angle that Coulomb's failure envelope makes with the horizontal is called |
| A. | Cohesion |
| B. | Angle of internal friction |
| C. | Angle of repose |
| D. | None of the above |
| Answer» B. Angle of internal friction | |
| 56. |
If the material of the base of the Casagrande liquid limit device on which the cup containingsoil paste drops is softer than the standard hard rubber, then |
| A. | The liquid limit of soil always increases |
| B. | The liquid limit of soil always decreases |
| C. | The liquid limit of soil may increase |
| D. | The liquid limit of soil may decrease |
| Answer» B. The liquid limit of soil always decreases | |
| 57. |
For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If co - efficiency of permeability of the dam material is 3 × 10-3 cm3/sec, the discharge per metre length of dam, is |
| A. | 12 × 10- 5 m3/sec |
| B. | 24 × 10-3 m3/sec |
| C. | 6 × 10-5 m3/sec |
| D. | 24 × 10- 5 m3/sec |
| Answer» E. | |
| 58. |
The maximum value of effective stress in the past divided by the present value is defined as over consolidation ratio (OCR). The O.C.R. of an over consolidated clay is |
| A. | Less than 1 |
| B. | 1 |
| C. | More than 1 |
| D. | None of these |
| Answer» D. None of these | |
| 59. |
If the specific gravity and voids in soil sample are G and e respectively, the hydraulic gradient i,is |
| A. | (G - 1)/(1 + e) |
| B. | (G + 1)/(1 - e) |
| C. | (1 - G)/(1 + e) |
| D. | (1 + G)/(1 + e) |
| Answer» B. (G + 1)/(1 - e) | |
| 60. |
Which of the following methods is more suitable for the determination of permeability of clayey soil? |
| A. | Constant head method |
| B. | Falling head method |
| C. | Horizontal permeability test |
| D. | None of the above |
| Answer» C. Horizontal permeability test | |
| 61. |
Select the correct range of density index, ID |
| A. | ID > 0 |
| B. | ID < 0 |
| C. | 0 < ID < 1 |
| D. | 0 < ID < 1 |
| Answer» E. | |
| 62. |
Fine sand possesses |
| A. | Good plasticity |
| B. | Limited plasticity |
| C. | Reasonable plasticity |
| D. | Clay |
| Answer» E. | |
| 63. |
Skempton's pore pressure coefficient B for saturated soil is |
| A. | 1 |
| B. | Zero |
| C. | Between 0 and 1 |
| D. | Greater than 1 |
| Answer» B. Zero | |
| 64. |
Which one of the following clays behaves like a dense sand? |
| A. | Over-consolidated clay with a high over-consolidation ratio |
| B. | Over-consolidated clay with a low over-consolidation ratio |
| C. | Normally consolidated clay |
| D. | Under-consolidated clay |
| Answer» B. Over-consolidated clay with a low over-consolidation ratio | |
| 65. |
A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m² to 200 kN/m². If the effective stress is further increased from 200 kN/m² to 400 kN/m², then the settlement of the same clay is |
| A. | 10 mm |
| B. | 20 mm |
| C. | 40 mm |
| D. | None of the above |
| Answer» B. 20 mm | |
| 66. |
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 |
| A. | 1.0 |
| B. | 1.5 |
| C. | 2.0 |
| D. | 2.5 |
| Answer» D. 2.5 | |
| 67. |
Which of the following types of soil is transported by gravitational forces? |
| A. | Loess |
| B. | Talus |
| C. | Drift |
| D. | Dune sand |
| Answer» C. Drift | |
| 68. |
If the coefficients of volume change and compressibility of a soil sample are 6.75 × 10-2 and 3 × 10-2 respectively, the void ratio of the soil sample, is |
| A. | 1.10 |
| B. | 1.15 |
| C. | 1.20 |
| D. | 1.30 |
| Answer» E. | |
| 69. |
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 |
| A. | 0.858 |
| B. | 0.860 |
| C. | 0.862 |
| D. | 0.864 |
| Answer» D. 0.864 | |
| 70. |
Bishop's method of stability analysis |
| A. | Is more conservative |
| B. | Neglects the effect of forces acting on the sides of the slices |
| C. | Assumes the slip surface as an arc of a circle |
| D. | All of the above |
| Answer» D. All of the above | |
| 71. |
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 |
| A. | 95.4 % |
| B. | 95.5 % |
| C. | 95.6 % |
| D. | 95.7 % |
| Answer» E. | |
| 72. |
When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported |
| A. | Negative |
| B. | Zero |
| C. | Non-plastic (NP) |
| D. | 1 |
| Answer» C. Non-plastic (NP) | |
| 73. |
A stratum of clay 2 m thick will get consolidated 80% in 10 years. For the 80% consolidationof 8 m thick stratum of the same clay, the time required is |
| A. | 100 years |
| B. | 120 years |
| C. | 140 years |
| D. | 160 years |
| Answer» E. | |
| 74. |
The compressibility of clays is caused due to: |
| A. | Expulsion of double layer water from in between the grains |
| B. | Sliping of particles to new positions of greater density |
| C. | Bending of particles as elastic sheets |
| D. | All the above |
| Answer» E. | |
| 75. |
In the plate loading test for determining the bearing capacity of soil, the size of squarebearing plate should be |
| A. | Less than 300 mm |
| B. | Between 300 mm and 750 mm |
| C. | Between 750 mm and 1 m |
| D. | Greater than 1 m |
| Answer» C. Between 750 mm and 1 m | |
| 76. |
If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of thecracks to the horizontal is |
| A. | 90° |
| B. | 45° |
| C. | 22.5° |
| D. | 0° |
| Answer» C. 22.5° | |
| 77. |
Porosity and void ratio are related by: |
| A. | e = n⁄(1-n) |
| B. | n = e⁄(1-e) |
| C. | 1-e = n |
| D. | (1+n)⁄n = e-1 |
| E. | 1-e = nd) (1+n)⁄n = e-1 |
| Answer» B. n = e⁄(1-e) | |
| 78. |
Percentage air voids is denoted as: |
| A. | v |
| B. | na |
| C. | s |
| D. | av |
| Answer» C. s | |
| 79. |
The mass density of water at 4oC is: |
| A. | 1000g/ml |
| B. | 1kg/m3 |
| C. | 1000Mg/m3 |
| D. | 1000kg/m3 |
| Answer» E. | |
| 80. |
Fine particles are those particles with size less than _______ mm diameter. |
| A. | 0.023 |
| B. | 0.090 |
| C. | 0.075 |
| D. | 4.75 |
| Answer» D. 4.75 | |
| 81. |
In Geotechnical Engineering, soil is considered as a _________ phase material. |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 4 |
| Answer» B. 2 | |
| 82. |
According to Darcy’s Law: |
| A. | q=iA |
| B. | q=kA |
| C. | q∞iA |
| D. | q∞kA |
| Answer» D. q∞kA | |
| 83. |
THE_MASS_DENSITY_OF_WATER_AT_4OC_IS:?$ |
| A. | 1000g/ml |
| B. | 1kg/m<sup>3</sup> |
| C. | 1000Mg/m<sup>3</sup> |
| D. | 1000kg/m<sup>3</sup> |
| Answer» E. | |
| 84. |
Porosity and void ratio are related by:$ |
| A. | e = <sup>n</sup>‚ÅÑ<sub>(1-n)</sub> |
| B. | n = <sup>e</sup>‚ÅÑ<sub>(1-e)</sub> |
| C. | 1-e = n |
| D. | <sup>(1+n)</sup>‚ÅÑ<sub>n</sub> = e-1 |
| Answer» B. n = <sup>e</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>(1-e)</sub> | |
| 85. |
Percentage air voids is denoted as:$ |
| A. | v |
| B. | n<sub>a</sub> |
| C. | s |
| D. | a<sub>v</sub> |
| Answer» C. s | |
| 86. |
Fine particles are those particles with size less than _______ mm diameter? |
| A. | 0.023 |
| B. | 0.090 |
| C. | 0.075 |
| D. | 4.75 |
| Answer» D. 4.75 | |
| 87. |
In Geotechnical Engineering, soil is considered as a _________ phase material? |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 4 |
| Answer» B. 2 | |
| 88. |
____________ is the measure of loss of strength with remoulding, with water content unchanged. |
| A. | Compressibility |
| B. | Sensitivity |
| C. | Stability |
| D. | Thixotropy |
| Answer» C. Stability | |
| 89. |
Which of the following does not happen when compaction is done? |
| A. | Permeability decreases |
| B. | Water content increases |
| C. | Shear strength decreases |
| D. | Compressibility decreases |
| Answer» D. Compressibility decreases | |
| 90. |
____________ index is used to find settlement of soil. |
| A. | Compression |
| B. | Expansion |
| C. | Recompression |
| D. | Reloading |
| Answer» B. Expansion | |
| 91. |
Triaxial compression test is used to find __________ of soil. |
| A. | Compressive strength |
| B. | Permeability |
| C. | Specific gravity |
| D. | Shear strength |
| Answer» E. | |
| 92. |
According to Darcy’s Law:$ |
| A. | q=iA |
| B. | q=kA |
| C. | q‚àûiA |
| D. | q‚àûkA |
| Answer» D. q‚Äö√Ñ√∂‚àö‚Ć‚àö¬™kA | |
| 93. |
Who is the father of Geotechnical Engineering? |
| A. | Christian Otto Mohr |
| B. | Clausius Cleyperon |
| C. | John Smith |
| D. | Karl Von Terzaghi |
| Answer» E. | |
| 94. |
Water content is given by: |
| A. | Weight of water/mass of soil |
| B. | Mass of water/mass of solid |
| C. | Mass of water/mass of soil |
| D. | Mass of water/weight of solid |
| Answer» C. Mass of water/mass of soil | |