McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 201. |
The liquid limit exists in |
| A. | sandy soils |
| B. | gravel soils |
| C. | silty soils |
| D. | clays |
| Answer» D. clays | |
| 202. |
The equipotential line in a seepage through a soil medium is defined as the |
| A. | path of particles of water through a saturated soil mass |
| B. | line connecting points of equal head of water |
| C. | flow of movement of fine particles of soil |
| D. | direction of the flow particle |
| Answer» B. line connecting points of equal head of water | |
| 203. |
The coefficient of active earth pressure is always |
| A. | more |
| B. | less |
| Answer» B. less | |
| 204. |
The ratio of the unconfined compressive strength of undisturbed soil to the unconfined compressive strength of soil in a remoulded state, is called |
| A. | sensitivity |
| B. | thixotropy |
| C. | relative density |
| D. | bulk density |
| Answer» A. sensitivity | |
| 205. |
The angle of internal friction of round grained dense sand is about |
| A. | 5? to 25? |
| B. | 25? to 30? |
| C. | 30? to 35? |
| D. | 32? to 37? |
| Answer» D. 32? to 37? | |
| 206. |
The soil transported by glaciers either by ice or water is called |
| A. | talus |
| B. | Loess |
| C. | Drift |
| D. | none of these |
| Answer» C. Drift | |
| 207. |
The neutral stress is |
| A. | increases |
| B. | decreases |
| Answer» B. decreases | |
| 208. |
The strength of a soil is usually identified by |
| A. | direct tensile stress |
| B. | direct compressive stress |
| C. | ultimate shear stress |
| D. | effective stress |
| Answer» C. ultimate shear stress | |
| 209. |
When applying Darcy's law to soils, it assumed that the |
| A. | soil is incompressible |
| B. | soil is homogeneous and isotropic |
| C. | flow conditions are laminar |
| D. | all of these |
| Answer» D. all of these | |
| 210. |
The consolidation of a soil is defined as the |
| A. | process of compression by gradual reduction of pore space under steady load |
| B. | process which gives gradual decrease of water content at constant load |
| C. | change in volume of soil due to expulsion of pure water under an applied load |
| D. | any one of the above |
| Answer» D. any one of the above | |
| 211. |
The liquid limit minus plastic limit is termed as |
| A. | flow index |
| B. | plasticity index |
| C. | shrinkage index |
| D. | liquidity index |
| Answer» B. plasticity index | |
| 212. |
The piping failure in a hydraulic structure can be prevented by |
| A. | diverting the seepage water into filter wells |
| B. | increasing the creep length of flow of water |
| C. | increasing the stress due to weight of the structure |
| D. | all of the above |
| Answer» D. all of the above | |
| 213. |
The critical height in the stability of soil is the |
| A. | minimum height at which it is possible for the sloped bank of soil to tbe stable |
| B. | macimum height at which it is possible for the sloped bank of soil to be stable |
| C. | minimum vertical height of the soil in an open excavation |
| D. | maximum vertical height of the soil is as open excavation |
| Answer» B. macimum height at which it is possible for the sloped bank of soil to be stable | |
| 214. |
The activity of clay is defined as the ratio of |
| A. | liquid limit to plastic limit |
| B. | liquidity index to plasticity index |
| C. | plasticity index to clay fraction |
| D. | plasticity index to shrinkage index |
| Answer» C. plasticity index to clay fraction | |
| 215. |
The exit gradient of the seepage of water through a soil medium is the |
| A. | slope of the flow line |
| B. | slope of the equi-potential line |
| C. | ration of total head to the length of seepage |
| D. | ratio of the head loss to the length of seepage |
| Answer» D. ratio of the head loss to the length of seepage | |
| 216. |
The unconfined compressive strength of a very soft 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» A. 10 to 25 kN/m2 | |
| 217. |
A soil is in a semi-solid state, if the consistency index is |
| A. | zero |
| B. | one |
| C. | more than unity |
| D. | none of these |
| Answer» C. more than unity | |
| 218. |
The unit weight of a soil at zero air voids depends upon |
| A. | unit weight of water |
| B. | water content |
| C. | specific gravity |
| D. | all of these |
| Answer» D. all of these | |
| 219. |
The maximum unit pressure that a soil can withstand without rupture in shear or without excessive settlement of the structure, is called |
| A. | allowable bearing pressure |
| B. | safe bearing capacity |
| C. | ultimate bearing capacity |
| D. | bearing capacity |
| Answer» B. safe bearing capacity | |
| 220. |
The effect of cohesion is to |
| A. | decrease |
| B. | increase |
| Answer» A. decrease | |
| 221. |
If a shear stress is applied on a dense sand, the shear strain caused will |
| A. | increase |
| B. | decrease |
| C. | not effect |
| Answer» A. increase | |
| 222. |
In case of footings in sand, if the soil pressure distribution is triangular, the maximum soil pressure is |
| A. | equal to |
| B. | double |
| C. | three times |
| D. | four times |
| Answer» B. double | |
| 223. |
The water content of soils can be accurately determined by |
| A. | sand bath method |
| B. | calcium carbide method |
| C. | over drying method |
| D. | Pycnometer method |
| Answer» C. over drying method | |
| 224. |
The standard temperature at which the hydrometer is calibrated is |
| A. | 10?C |
| B. | 15?C |
| C. | 20?C |
| D. | 27?C |
| Answer» D. 27?C | |
| 225. |
The relation between the air content (ac) and the degree of saturation (s) is |
| A. | ac = s |
| B. | ac = 1 - s |
| C. | ac = 1 + s |
| D. | ac = 1/s |
| Answer» B. ac = 1 - s | |
| 226. |
Black cotton soils are |
| A. | expensive |
| B. | residual |
| Answer» A. expensive | |
| 227. |
A soil containing continuous voids is called |
| A. | permeable |
| B. | impermeable |
| Answer» A. permeable | |
| 228. |
The property of a soil which enables to regain its strength lost on remoulding in a short time, without change of moisture content, is called |
| A. | unconfined compressive strength |
| B. | sensitivity |
| C. | thixotropy |
| D. | relative density |
| Answer» C. thixotropy | |
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