MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 372 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
If the plasticity index of a soil mass is zero, the soil is |
| A. | sand |
| B. | silt |
| C. | clay |
| D. | clayey silt |
| Answer» B. silt | |
| 252. |
Stoke’s law is valid only if the size of particle is |
| A. | less than 0.0002 mm |
| B. | greater than 0.2 mm |
| C. | between 0.2 mm and 0.0002 mm |
| D. | all of the above |
| Answer» D. all of the above | |
| 253. |
Relative density of a compacted dense sand is approximately equal to |
| A. | 0.4 |
| B. | 0.6 |
| C. | 0.95 |
| D. | 1.20 |
| Answer» D. 1.20 | |
| 254. |
Effective stress on soil |
| A. | Increases voids ratio and decreases permeability |
| B. | Increases both voids ratio and permeability |
| C. | Decreases both voids ratio and permeability |
| D. | Decreases voids ratio and increases permeability |
| Answer» D. Decreases voids ratio and increases permeability | |
| 255. |
A pycnometer is used to determine |
| A. | water content and voids ratio |
| B. | specific gravity and dry density |
| C. | water content and specific gravity |
| D. | voids ratio and dry density |
| Answer» D. voids ratio and dry density | |
| 256. |
The water content of soil, which represents the boundary between plastic state and liquid state, is known as |
| A. | liquid limit |
| B. | plastic limit |
| C. | shrinkage limit |
| D. | plasticity index |
| Answer» B. plastic limit | |
| 257. |
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 | |
| 258. |
Constant head permeameter is used to test permeability of |
| A. | silt |
| B. | clay |
| C. | coarse sand |
| D. | fine sand |
| Answer» D. fine sand | |
| 259. |
Total number of stress components at a point within a soil mass loaded at its boundary is |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 16 |
| Answer» D. 16 | |
| 260. |
If the water table rises upto ground surface, then the |
| A. | effective stress is reduced due to decrease in total stress only but pore water pressure does not change |
| B. | effective stress is reduced due to increase in pore water pressure only but total stress does not change |
| C. | total stress is reduced due to increase in pore water pressure only but effective stress does not change |
| D. | total stress is increased due to decrease in pore water pressure but effective stress does not change |
| Answer» C. total stress is reduced due to increase in pore water pressure only but effective stress does not change | |
| 261. |
The shear strength of a soil |
| A. | Is directly proportional to the angle of internal friction of the soil |
| B. | Is inversely proportional to the angle of internal friction of the soil |
| C. | Decreases with increase in normal stress |
| D. | Decreases with decrease in normal stress |
| Answer» E. | |
| 262. |
Allowable bearing pressure for a foundation depends upon |
| A. | allowable settlement only |
| B. | ultimate bearing capacity of soil only |
| C. | both allowable settlement and ultimate bearing capacity |
| D. | none of above |
| Answer» D. none of above | |
| 263. |
If the shearing stress is zero on two planes, then the angle between the two planes is |
| A. | 45° |
| B. | 90° |
| C. | 135° |
| D. | 225° |
| Answer» C. 135° | |
| 264. |
If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is |
| A. | 90° |
| B. | 45° |
| C. | 22.5° |
| D. | 0° |
| Answer» C. 22.5° | |
| 265. |
Which of the following types of soil is transported by gravitational forces ? |
| A. | loess |
| B. | talus |
| C. | drift |
| D. | dune sand |
| Answer» C. drift | |
| 266. |
In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on |
| A. | horizontal plane only |
| B. | vertical plane only |
| C. | both horizontal and vertical planes |
| D. | all planes except horizontal and vertical planes |
| Answer» E. | |
| 267. |
In hydrometer analysis for a soil mass |
| A. | both meniscus correction and dispersing agent correction are additive |
| B. | both meniscus correction and dispersing agent correction are subtractive |
| C. | meniscus correction is additive and dispersing agent correction is subtractive |
| D. | meniscus correction is subtractive and dispersing agent correction is additive |
| Answer» D. meniscus correction is subtractive and dispersing agent correction is additive | |
| 268. |
The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is |
| A. | 1/3 |
| B. | 3 |
| C. | 1 |
| D. | 1/2 |
| Answer» B. 3 | |
| 269. |
The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is |
| A. | Vertical if the soil is in an active state of plastic equilibrium |
| B. | Vertical if the soil is in a passive state of plastic equilibrium |
| C. | Inclined at 45° to the vertical plane |
| D. | None of the above |
| Answer» B. Vertical if the soil is in a passive state of plastic equilibrium | |
| 270. |
The ultimate consolidation settlement of a structure resting on a soil |
| A. | Decreases with the increase in the initial voids ratio |
| B. | Decreases with the decrease in the plastic limit |
| C. | Increases with the increase in the initial voids ratio |
| D. | Increases with the decrease in the porosity of the soil |
| Answer» B. Decreases with the decrease in the plastic limit | |
| 271. |
Coarse grained soils are best compacted by a |
| A. | drum roller |
| B. | rubber tyred roller |
| C. | sheep’s foot roller |
| D. | vibratory roller |
| Answer» E. | |
| 272. |
Highway Research Board (HRB) classification of soils is based on |
| A. | particle size composition |
| B. | plasticity characteristics |
| C. | both particle size composition and plasticity characteristics |
| D. | none of the above |
| Answer» D. none of the above | |
| 273. |
If the voids of a soil mass are full of air only, the soil is termed as |
| A. | air entrained soil |
| B. | partially saturated soil |
| C. | dry soil |
| D. | dehydrated soil |
| Answer» D. dehydrated soil | |
| 274. |
According to IS classification, the range of silt size particles is |
| A. | 4.75 mm to 2.00 mm |
| B. | 2.00 mm to 0.425 mm |
| C. | 0.425 mm to 0.075 mm |
| D. | 0.075 mm to 0.002 mm |
| Answer» E. | |
| 275. |
Skempton’s pore pressure coefficient B for saturated soil is |
| A. | 1 |
| B. | zero |
| C. | between 0 and 1 |
| D. | greater than 1 [CS 95] |
| Answer» B. zero | |
| 276. |
Inorganic soils with low compressibility are represented by |
| A. | MH |
| B. | SL |
| C. | ML |
| D. | CH |
| Answer» D. CH | |
| 277. |
During the first stage of triaxial test when the cell pressure is increased from 0.10 N/mm² to 0.26 N/mm², the pore water pressure increases from 0.07 N/mm² to 0.15 “N/mm². Skempton’s pore pressure parameter B is |
| A. | 0.5 |
| B. | -0.5 |
| C. | 2.0 |
| D. | -2.0 |
| Answer» B. -0.5 | |
| 278. |
Hydrometer readings are corrected for: |
| A. | Temperature correction |
| B. | Meniscus correction |
| C. | Dispersing agent correction |
| D. | Temperature, meniscus and dispersing agent corrections |
| Answer» E. | |
| 279. |
When the degree of saturation is zero, the soil mass under consideration represents |
| A. | one phase system |
| B. | two phase system with soil and air |
| C. | two phase system with soil and water |
| D. | three phase system |
| Answer» C. two phase system with soil and water | |
| 280. |
The slope of isochrone at any point at a given time indicates the rate of change of |
| A. | effective stress with time |
| B. | effective stress with depth |
| C. | pore water pressure with depth |
| D. | pore water pressure with time |
| Answer» D. pore water pressure with time | |
| 281. |
If the natural water content of soil mass lies between its liquid limit and plastic limit, the soil mass is said to be in |
| A. | liquid state |
| B. | plastic state |
| C. | semi-solid state |
| D. | solid state |
| Answer» C. semi-solid state | |
| 282. |
Valid range for S, the degree of saturation of soil in percentage is |
| A. | S > 0 |
| B. | S < 0 |
| C. | 0 < S < 100 |
| D. | 0 ≤ S ≤ 100 |
| Answer» E. | |
| 283. |
Terzaghi’s bearing capacity factors Nc, Nq and Nr are functions of |
| A. | cohesion only |
| B. | angle of internal friction only |
| C. | both cohesion and angle of internal friction |
| D. | none of the above |
| Answer» C. both cohesion and angle of internal friction | |
| 284. |
Rise of water table in cohesionless soils upto ground surface reduces the net ultimate bearing capacity approximately by |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | 90% |
| Answer» C. 75% | |
| 285. |
Within the consolidation process of a saturated clay |
| A. | a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant |
| B. | a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant |
| C. | both neutral pressure and effective pressure decrease |
| D. | both neutral pressure and effective pressure increase |
| Answer» C. both neutral pressure and effective pressure decrease | |
| 286. |
Time factor for a clay layer is |
| A. | a dimensional parameter |
| B. | directly proportional to permeability of soil |
| C. | inversely proportional to drainage path |
| D. | independent of thickness of clay layer |
| Answer» C. inversely proportional to drainage path | |
| 287. |
Quick sand is a |
| A. | type of sand |
| B. | flow condition occurring in cohesive soils |
| C. | flow condition occurring in cohesionless soils |
| D. | flow condition occurring in both cohesive and cohesionless soils |
| Answer» D. flow condition occurring in both cohesive and cohesionless soils | |
| 288. |
A plane inclined at an angle ‘φ’ to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as |
| A. | Natural slope line |
| B. | Repose line |
| C. | The φ line |
| D. | All the above |
| Answer» E. | |
| 289. |
Coefficient of consolidation for clays normally |
| A. | decreases with increase in liquid limit |
| B. | increases with increase in liquid limit |
| C. | first increases and then decreases with increase in liquid limit |
| D. | remains constant at all liquid limits |
| Answer» B. increases with increase in liquid limit | |
| 290. |
Coefficient of compressibility is |
| A. | constant for any type of soil |
| B. | different for different types of soils and also different for a soil under different states of consolidation |
| C. | different for different types of soils but same for a soil under different states of consolidation |
| D. | independent of type of soil but depends on the stress history of soil |
| Answer» C. different for different types of soils but same for a soil under different states of consolidation | |
| 291. |
Terzaghi’s theory of one dimensional consolidation assumes |
| A. | Soil is homogeneous and fully saturated |
| B. | Water and soil particles are incompressible |
| C. | Deformation of the soil, is entirely due to change in volume |
| D. | All the above |
| Answer» E. | |
| 292. |
A fully saturated soil is said to be |
| A. | one phase system |
| B. | two phase system with soil and air |
| C. | two phase system with soil and water |
| D. | three phase system |
| Answer» D. three phase system | |
| 293. |
Compressibility of sandy soils is |
| A. | almost equal to that of clayey soils |
| B. | much greater than that of clayey soils |
| C. | much less than that of clayey soils |
| D. | none of the above |
| Answer» D. none of the above | |
| 294. |
Water content of soil can |
| A. | never be greater than 100 % |
| B. | take values only from 0 % to 100 % |
| C. | be less than 0 % |
| D. | be greater than 100 % |
| Answer» E. | |
| 295. |
If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is |
| A. | 40% |
| B. | 60% |
| C. | 80% |
| D. | 100% |
| Answer» B. 60% | |
| 296. |
Shear strength of a soil is a unique function of |
| A. | effective stress only |
| B. | total stress only |
| C. | both effective stress and total stress |
| D. | none of the above |
| Answer» B. total stress only | |
| 297. |
Rise of water table above the ground surface causes |
| A. | Equal increase in pore water pressure and total stress |
| B. | Equal decrease in pore water pressure and total stress |
| C. | Increase in pore water pressure but decrease in total stress |
| D. | Decrease in pore water pressure but increase in total stress |
| Answer» B. Equal decrease in pore water pressure and total stress | |
| 298. |
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in |
| A. | the principle of test |
| B. | the method of taking observations |
| C. | the method of preparation of soil suspension |
| D. | all of the above |
| Answer» C. the method of preparation of soil suspension | |
| 299. |
The effect of cohesion on a soil is to |
| A. | reduce both the active earth pressure intensity and passive earth pressure intensity |
| B. | increase both the active earth pressure intensity and passive earth pressure intensity |
| C. | reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity |
| D. | increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99] |
| Answer» D. increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99] | |
| 300. |
In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear |
| A. | decreases |
| B. | increases |
| C. | remains unchanged |
| D. | first increases and then decreases |
| Answer» B. increases | |