MCQOPTIONS
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MCQOPTIONS
This section includes 266 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
A partially saturated soil is classified as |
| A. | one phase soil |
| B. | two phase soil |
| C. | three phase soil |
| D. | four phase soil. |
| Answer» D. four phase soil. | |
| 202. |
When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as |
| A. | quick test |
| B. | drained test |
| C. | consolidated undrained test |
| D. | none of these. |
| Answer» D. none of these. | |
| 203. |
The liquidity index is defined as a ratio expressed as percentage of |
| A. | plastic limit minus the natural water content, to its plasticity index |
| B. | natural water content minus its plastic limit to its plasticity index |
| C. | natural water content plus its plastic limit to its plasticity index |
| D. | liquid limit minus the natural water content to the plasticity index. |
| Answer» C. natural water content plus its plastic limit to its plasticity index | |
| 204. |
During seepage through a soil, direction of seepage is always |
| A. | parallel to equipotential lines |
| B. | perpendicular to stream lines |
| C. | perpendicular to equipotential lines |
| D. | none of these. |
| Answer» D. none of these. | |
| 205. |
The zero atmospheric pressure is at |
| A. | sea level |
| B. | mean sea level |
| C. | water table |
| D. | phreatic surface |
| Answer» E. | |
| 206. |
The ratio of the volume of voids to the volume of soil solids in a given soil mass, is known |
| A. | porosity |
| B. | specific gravity |
| C. | void ratio |
| D. | water content. |
| Answer» D. water content. | |
| 207. |
The specific yield of soil depends upon |
| A. | compaction of stratum |
| B. | distribution of pores |
| C. | shape and size of particles |
| D. | all the above. |
| Answer» E. | |
| 208. |
A suspended particle falls through a height H cm in water in t minutes. If the viscosity of water is η and specific gravity of the particle is G, the diameter of the particle is (where M is a constant factor) |
| A. | 103M |
| B. | 104M |
| C. | 105M |
| D. | 102M |
| Answer» D. 102M | |
| 209. |
Pile foundations are generally preferred to for |
| A. | bridge foundations |
| B. | sky scrapper buildings |
| C. | residential buildings |
| D. | runways. |
| Answer» C. residential buildings | |
| 210. |
The earth pressure of a soil at rest, is proportional to (where φ is the angle of internal friction of the soil) |
| A. | tan (45° - φ) |
| B. | tan (45° + φ) |
| C. | tan2 (45° - φ) |
| D. | tan2 (45° + φ) |
| Answer» E. | |
| 211. |
Chemical weathering of soil is caused due to |
| A. | oxidation |
| B. | carbonation |
| C. | hydration |
| D. | leaching |
| Answer» E. | |
| 212. |
Rankine's theory of active earth pressure assumes |
| A. | soil mass is homogeneous, dry and cohesionless |
| B. | ground surface is a plane which may be horizontal or inclined |
| C. | back of the wall is vertical and smooth |
| D. | wall yields about the base |
| Answer» E. | |
| 213. |
If W1, W2, W3 and W4 are the sequential weights obtained during observations in pycnometer method for determining water content, the formula to be used, is |
| A. | W = |
| B. | W = |
| C. | W = |
| D. | W = |
| Answer» D. W = | |
| 214. |
The maximum load carried by a pile, when it continues to sink without further increase of load, is known as |
| A. | ultimate load carrying capacity |
| B. | ultimate bearing capacity |
| C. | ultimate bearing resistant |
| D. | all the above. |
| Answer» E. | |
| 215. |
For general engineering purposes, soils are classified by |
| A. | particle size classification system |
| B. | textural classification system |
| C. | High Way Research Board (HRB), classification system |
| D. | unified soil classification system. |
| Answer» E. | |
| 216. |
The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known |
| A. | liquid limit |
| B. | plastic limit |
| C. | shrinkage limit |
| D. | permeability limit. |
| Answer» B. plastic limit | |
| 217. |
The weight of a pycnometer containing 400 g sand and water full to the top is 2150 g. The weight of pycnometer full of clean water is 1950 g. If specific gravity of the soil is 2.5, the water content is |
| A. | 0.05 |
| B. | 0.1 |
| C. | 0.15 |
| D. | 0.2 |
| Answer» E. | |
| 218. |
The phreatic line in an earth dam may be |
| A. | circular |
| B. | elliptical |
| C. | parabolic |
| D. | a straight line |
| Answer» D. a straight line | |
| 219. |
The angle of internal friction is maximum for |
| A. | angular-grained loose sand |
| B. | angular-grained dense sand |
| C. | round-grained dense sand |
| D. | round-grained loose sand |
| Answer» C. round-grained dense sand | |
| 220. |
A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is |
| A. | 1.0 g/cm2 |
| B. | 1.5 g/cm3 |
| C. | 2.0 g/cm3 |
| D. | 2.5 g/cm3 |
| Answer» D. 2.5 g/cm3 | |
| 221. |
Plasticity index is defined as the range of water content between |
| A. | liquid and plastic limit |
| B. | plastic limit and semi solid limit |
| C. | semi-solid limit and liquid limit |
| D. | liquid limit and solid limit. |
| Answer» B. plastic limit and semi solid limit | |
| 222. |
If G is specific gravity of sand particles, e is porosity, the critically hydraulic gradient |
| A. | ic = |
| B. | ic = |
| C. | ic = |
| D. | ic = |
| Answer» D. ic = | |
| 223. |
Factor of safety against sliding of a slope, is the ratio of |
| A. | actual cohesion to that required to maintain stability of slope |
| B. | shear strength to shear stress along the surface |
| C. | neither (a) nor (b) |
| D. | both (a) and (b). |
| Answer» E. | |
| 224. |
The plasticity of fine soils may be assessed by means of |
| A. | dry strength test |
| B. | toughness test |
| C. | dilatancy test |
| D. | all of these. |
| Answer» E. | |
| 225. |
A grillage foundation |
| A. | is provided for heavily loaded isolated columns |
| B. | is treated as spread foundation |
| C. | consists of two sets of perpendicularly placed steel beams |
| D. | all the above. |
| Answer» E. | |
| 226. |
The Terzaghi's general bearing capacity equation for a continuous footing is given by (where Nc, 2V& and Ny are bearing capacity factors.) |
| A. | qf = cNc + γDNq + 0.5γBNγ |
| B. | qf = cNc - γDNq + 0.5γBNγ |
| C. | qf = cNc + γDNq - 0.5γBNγ |
| D. | qf = cNc - γDNq - 0.5γBNγ |
| Answer» B. qf = cNc - Œ≥DNq + 0.5Œ≥BNŒ≥ | |
| 227. |
The liquid limit and plastic limit exist in |
| A. | sandy soils |
| B. | silty soils |
| C. | gravel soils |
| D. | clay soils. |
| Answer» E. | |
| 228. |
The seepage force in a soil, is |
| A. | perpendicular to the equipotential lines |
| B. | proportional to the exit graident |
| C. | proportional to the head loss |
| D. | all the above. |
| Answer» E. | |
| 229. |
A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.6. If the moisture content in the soil is 20%, the degree of saturation is |
| A. | 0.2 |
| B. | 0.77 |
| C. | 0.92 |
| D. | none of these. |
| Answer» D. none of these. | |
| 230. |
The ratio of the weight of given volume of soil solids to the weight of an equal volume of distilled water at the given temperature, is known |
| A. | porosity |
| B. | specific gravity |
| C. | void ratio |
| D. | water content. |
| Answer» C. void ratio | |
| 231. |
On wetting, cohesive soils, |
| A. | loose permeability |
| B. | gain shear strength |
| C. | loose elasticity |
| D. | decrease their shear strength. |
| Answer» E. | |
| 232. |
For determining the moisture content of a soil sample, the following data is available Weight of container = 260 g, Weight of soil sample and = 320 g container, Weight of soil sample (dried) and = 310 g container. The moisture content of the soil sample, is |
| A. | 0.15 |
| B. | 0.18 |
| C. | 0.2 |
| D. | 0.25 |
| Answer» D. 0.25 | |
| 233. |
A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at which quick sand condition occurs, is |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 1 |
| Answer» E. | |
| 234. |
For a clay slope of height of 10 m, the stability number is 0.05, γ = 2.0 t/m3, C = 2.5 t/m2, the critical height of the slope of the soil, is |
| A. | 4.0 m |
| B. | 12.5 m |
| C. | 25.0 m |
| D. | 15.0 m |
| Answer» D. 15.0 m | |
| 235. |
The ultimate Settlement of a soil is directly proportional to: |
| A. | depth of the compressible soil strata |
| B. | compressive index |
| C. | void ratio |
| D. | both (a) and (b) |
| Answer» E. | |
| 236. |
The water content of soil is defined as the ratio of |
| A. | volume of water to volume of given soil |
| B. | volume of water to volume of voids in soil |
| C. | weight of water to weight of air in voids |
| D. | weight of water to weight of solids of given mass of soil. |
| Answer» E. | |
| 237. |
The shearing force acting along the slice of a curved surface of slippage, causes the soil to slide |
| A. | down at the centre |
| B. | down at the toe |
| C. | upward at the centre |
| D. | none of these. |
| Answer» B. down at the toe | |
| 238. |
The specific gravity of quartz, is |
| A. | 2.65 |
| B. | 2.72 |
| C. | 2.85 |
| D. | 2.9 |
| Answer» B. 2.72 | |
| 239. |
The angle of internal friction of clays, is usually |
| A. | 0° to 5° |
| B. | 5° to 20° |
| C. | 20° to 30° |
| D. | 30° to 45° |
| Answer» C. 20¬∞ to 30¬∞ | |
| 240. |
The fundamental equation of specific gravity (G), dry density (γd), unit weight of water (γω) and void ratio (e), is |
| A. | e = |
| B. | G = |
| C. | γd = |
| D. | γω = |
| Answer» D. Œ≥œâ = | |
| 241. |
The clay soil mainly consists of |
| A. | Kaolinites . |
| B. | Montomorillonite |
| C. | Illites |
| D. | Vermiculite |
| Answer» E. | |
| 242. |
If drainage is permitted throughout the test, during the application of both normal, and shear stresses so that full consolidation occurs and no excess pore pressure is set up at any stage of the test, is known as |
| A. | quick test |
| B. | drained test |
| C. | consolidated undrained test |
| D. | none of these. |
| Answer» C. consolidated undrained test | |
| 243. |
A stratum of clay 2 m thick will get consolidated 80% in 10 years. For the 80% consolidation of 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. | |
| 244. |
A soil not fully consolidated under the existing over-burden pressure, is called |
| A. | pre-consolidated |
| B. | normally consolidated |
| C. | under-consolidated |
| D. | none of these. |
| Answer» D. none of these. | |
| 245. |
A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3. If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is |
| A. | 0.111 |
| B. | 0.556 |
| C. | 0.696 |
| D. | none of these. |
| Answer» C. 0.696 | |
| 246. |
If the cohesive force, (c), is 1.5 t/m2, the density (γ) of the soil is 2.0 t/m3, factor of safety (F) is 1.5 and stability factor (Sn) is 0.05, the safe height of the §lope, is |
| A. | 5 metres |
| B. | 8 metres |
| C. | 10 metres |
| D. | 12 metres |
| Answer» D. 12 metres | |
| 247. |
Buoyant unit weight equals the saturated density |
| A. | multiplied by unit weight of water |
| B. | divided by unit weight of water |
| C. | plus unit weight of water |
| D. | minus unit weight of water. |
| Answer» E. | |
| 248. |
Failure of the stability of slopes, generally occurs along |
| A. | slip plane |
| B. | a horizontal surface |
| C. | a curved surface |
| D. | all the surfaces. |
| Answer» D. all the surfaces. | |
| 249. |
The reduction in volume of soil due to squeezing out of water from the voids, is termed |
| A. | primary consolidation |
| B. | primary compression |
| C. | primary time effect |
| D. | all the above. |
| Answer» E. | |
| 250. |
Pick up the in-correct statement from the following: The soils which contain montmorillonite minerals |
| A. | swell more when wet |
| B. | shrink more when dry |
| C. | possess high plasticity |
| D. | possess high coefficient of internal coefficient |
| Answer» E. | |