MCQOPTIONS
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MCQOPTIONS
This section includes 155 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The water content of soil, which represents the boundary between plastic state and liquid state, is known as |
| A. | iquid limit |
| B. | lastic limit |
| C. | hrinkage limit |
| D. | lasticity index |
| Answer» B. lastic limit | |
| 2. |
Bishop’s method of stability analysis |
| A. | s more conservative |
| B. | eglects the effect of forces acting on the sides of the slices |
| C. | ssumes the slip surface as an arc of a circle |
| D. | ll of the above |
| Answer» D. ll of the above | |
| 3. |
Constant head permeameter is used to test permeability of |
| A. | ilt |
| B. | lay |
| C. | oarse sand |
| D. | ine sand |
| Answer» D. ine sand | |
| 4. |
If the water table rises upto ground surface, then the |
| A. | ffective stress is reduced due to decrease in total stress only but pore water pressure does not change |
| B. | ffective stress is reduced due to increase in pore water pressure only but total stress does not change |
| C. | otal stress is reduced due to increase in pore water pressure only but effective stress does not change |
| D. | otal stress is increased due to decrease in pore water pressure but effective stress does not change |
| Answer» C. otal stress is reduced due to increase in pore water pressure only but effective stress does not change | |
| 5. |
Coarse grained soils are best compacted by a |
| A. | rum roller |
| B. | ubber tyred roller |
| C. | heep’s foot roller |
| D. | ibratory roller |
| Answer» E. | |
| 6. |
Highway Research Board (HRB) classification of soils is based on |
| A. | article size composition |
| B. | lasticity characteristics |
| C. | oth particle size composition and plasticity characteristics |
| D. | one of the above |
| Answer» D. one of the above | |
| 7. |
In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on |
| A. | orizontal plane only |
| B. | ertical plane only |
| C. | oth horizontal and vertical planes |
| D. | ll planes except horizontal and vertical planes |
| Answer» E. | |
| 8. |
In hydrometer analysis for a soil mass |
| A. | oth meniscus correction and dispersing agent correction are additive |
| B. | oth meniscus correction and dispersing agent correction are subtractive |
| C. | eniscus correction is additive and dispersing agent correction is subtractive |
| D. | eniscus correction is subtractive and dispersing agent correction is additive |
| Answer» D. eniscus correction is subtractive and dispersing agent correction is additive | |
| 9. |
The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is |
| A. | ertical if the soil is in an active state of plastic equilibrium |
| B. | ertical if the soil is in a passive state of plastic equilibrium |
| C. | nclined at 45° to the vertical plane |
| D. | one of the above |
| Answer» B. ertical if the soil is in a passive state of plastic equilibrium | |
| 10. |
The ultimate consolidation settlement of a structure resting on a soil |
| A. | ecreases with the increase in the initial voids ratio |
| B. | ecreases with the decrease in the plastic limit |
| C. | ncreases with the increase in the initial voids ratio |
| D. | ncreases with the decrease in the porosity of the soil |
| Answer» B. ecreases with the decrease in the plastic limit | |
| 11. |
Inorganic soils with low compressibility are represented by |
| A. | H |
| B. | L |
| C. | L |
| D. | H |
| Answer» D. H | |
| 12. |
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. | 0 |
| D. | 2 |
| Answer» B. 0.5 | |
| 13. |
The slope of isochrone at any point at a given time indicates the rate of change of |
| A. | ffective stress with time |
| B. | ffective stress with depth |
| C. | ore water pressure with depth |
| D. | ore water pressure with time |
| Answer» D. ore water pressure with time | |
| 14. |
Time factor for a clay layer is |
| A. | dimensional parameter |
| B. | irectly proportional to permeability of soil |
| C. | nversely proportional to drainage path |
| D. | ndependent of thickness of clay layer |
| Answer» C. nversely proportional to drainage path | |
| 15. |
Quick sand is a |
| A. | ype of sand |
| B. | low condition occurring in cohesive soils |
| C. | low condition occurring in cohesionless soils |
| D. | low condition occurring in both cohesive and cohesionless soils |
| Answer» D. low condition occurring in both cohesive and cohesionless soils | |
| 16. |
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. | atural slope line |
| B. | epose line |
| C. | he φ line |
| D. | ll the above |
| Answer» E. | |
| 17. |
Coefficient of compressibility is |
| A. | onstant for any type of soil |
| B. | ifferent for different types of soils and also different for a soil under different states of consolidation |
| C. | ifferent for different types of soils but same for a soil under different states of consolidation |
| D. | ndependent of type of soil but depends on the stress history of soil |
| Answer» C. ifferent for different types of soils but same for a soil under different states of consolidation | |
| 18. |
Terzaghi’s theory of one dimensional consolidation assumes |
| A. | oil is homogeneous and fully saturated |
| B. | ater and soil particles are incompressible |
| C. | eformation of the soil, is entirely due to change in volume |
| D. | ll the above |
| Answer» E. | |
| 19. |
Compressibility of sandy soils is |
| A. | lmost equal to that of clayey soils |
| B. | uch greater than that of clayey soils |
| C. | uch less than that of clayey soils |
| D. | one of the above |
| Answer» D. one of the above | |
| 20. |
If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is |
| A. | 0% |
| B. | 0% |
| C. | 0% |
| D. | 00% |
| Answer» B. 0% | |
| 21. |
Shear strength of a soil is a unique function of |
| A. | ffective stress only |
| B. | otal stress only |
| C. | oth effective stress and total stress |
| D. | one of the above |
| Answer» B. otal stress only | |
| 22. |
If the plasticity index of a soil mass is zero, the soil is |
| A. | and |
| B. | ilt |
| C. | lay |
| D. | layey silt |
| Answer» B. ilt | |
| 23. |
Stoke’s law is valid only if the size of particle is |
| A. | ess than 0.0002 mm |
| B. | reater than 0.2 mm |
| C. | etween 0.2 mm and 0.0002 mm |
| D. | ll of the above |
| Answer» D. ll of the above | |
| 24. |
Rise of water table above the ground surface causes |
| A. | qual increase in pore water pressure and total stress |
| B. | qual decrease in pore water pressure and total stress |
| C. | ncrease in pore water pressure but decrease in total stress |
| D. | ecrease in pore water pressure but increase in total stress |
| Answer» B. qual decrease in pore water pressure and total stress | |
| 25. |
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in |
| A. | he principle of test |
| B. | he method of taking observations |
| C. | he method of preparation of soil suspension |
| D. | ll of the above |
| Answer» C. he method of preparation of soil suspension | |
| 26. |
The effect of cohesion on a soil is to |
| A. | educe both the active earth pressure intensity and passive earth pressure intensity |
| B. | ncrease both the active earth pressure intensity and passive earth pressure intensity |
| C. | educe the active earth pressure in-tensity but to increase the passive earth pressure intensity |
| D. | ncrease the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99] |
| Answer» D. ncrease the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99] | |
| 27. |
Allowable bearing pressure for a foundation depends upon |
| A. | llowable settlement only |
| B. | ltimate bearing capacity of soil only |
| C. | oth allowable settlement and ultimate bearing capacity |
| D. | one of above |
| Answer» D. one of above | |
| 28. |
If the shearing stress is zero on two planes, then the angle between the two planes is |
| A. | 5° |
| B. | 0° |
| C. | 35° |
| D. | 25° |
| Answer» C. 35° | |
| 29. |
Which of the following methods is best suited for determination of permeability of coarse-grained soils ? |
| A. | onstant head method |
| B. | alling head method |
| C. | oth the above |
| D. | one of the above |
| Answer» B. alling head method | |
| 30. |
Select the incorrect statement. Effective angle of shearing resistance |
| A. | ncreases as the size of particles increases |
| B. | ncreases as the soil gradation im-proves |
| C. | s limited to a maximum value of 45° |
| D. | s rarely more than 30° for fine grained soil |
| Answer» D. s rarely more than 30° for fine grained soil | |
| 31. |
Contact pressure beneath a rigid footing resting on cohesive soil is |
| A. | ess at edges compared to middle |
| B. | ore at edges compared to middle |
| C. | niform throughout |
| D. | one of the above |
| Answer» C. niform throughout | |
| 32. |
A tri-axial shear test is preferred to direct shear test, because |
| A. | t can be performed under all three drainage conditions with complete control |
| B. | recise measurement of pore pressure and change in volume during test, is not possible |
| C. | tress distribution on the failure plane, is non uniform |
| D. | one of these |
| Answer» B. recise measurement of pore pressure and change in volume during test, is not possible | |
| 33. |
Toughness index is defined as the ratio of |
| A. | lasticity index to consistency index |
| B. | lasticity index to flow index |
| C. | iquidity index to flow index |
| D. | onsistency index to liquidity index |
| Answer» C. iquidity index to flow index | |
| 34. |
The maximum dry density upto which any soil can be compacted depends upon |
| A. | oisture content only |
| B. | mount of compaction energy only |
| C. | oth moisture content and amount of compaction energy |
| D. | one of the above |
| Answer» D. one of the above | |
| 35. |
In a deposit of normally consolidated clay |
| A. | ffective stress increases with depth but water content of soil and un-drained strength decrease with depth |
| B. | ffective stress and water content increase with depth but undrained strength decreases with depth |
| C. | ffective stress and undrained strength increase with depth but water content decreases with depth |
| D. | ffective stress, water content and undrained strength decrease with depth |
| Answer» D. ffective stress, water content and undrained strength decrease with depth | |
| 36. |
With the increase in the amount of compaction energy |
| A. | ptimum water content increases but maximum dry density decreases |
| B. | ptimum water content decreases but maximum dry density increases |
| C. | oth optimum water content and maximum dry density increase |
| D. | oth optimum water content and maximum dry density decrease[ES 93] |
| Answer» C. oth optimum water content and maximum dry density increase | |
| 37. |
The most suitable method for drainage of fine grained cohesive soils is |
| A. | ell ppint system |
| B. | acuum method |
| C. | eep well system |
| D. | lectroosmosis method |
| Answer» E. | |
| 38. |
Sensitivity of a soil can be defined as |
| A. | ercentage of volume change of soil under saturated condition |
| B. | atio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state |
| C. | atio of volume of voids to volume of solids |
| D. | one of the above |
| Answer» C. atio of volume of voids to volume of solids | |
| 39. |
At liquid limit, all soils possess |
| A. | ame shear strength of small magnitude |
| B. | ame shear strength of large magnitude |
| C. | ifferent shear strengths of small magnitude |
| D. | ifferent shear strengths of large magnitude |
| Answer» B. ame shear strength of large magnitude | |
| 40. |
A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of |
| A. | ° |
| B. | 0° |
| C. | 2° |
| D. | 7° |
| Answer» D. 7° | |
| 41. |
The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing |
| A. | ohesion and effective angle of shearing resistance |
| B. | ohesion and effective unit weight of soil |
| C. | ffective unit weight of soil and effective angle of shearing resistance |
| D. | ffective angle of shearing resistance |
| Answer» C. ffective unit weight of soil and effective angle of shearing resistance | |
| 42. |
Direct measurement of permeability of the specimen at any stage of loading can be made |
| A. | nly in fixed ring type consolido-meter |
| B. | nly in floating ring type consolido-meter |
| C. | oth (A) and (B) |
| D. | one of the above |
| Answer» B. nly in floating ring type consolido-meter | |
| 43. |
If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is |
| A. | ess than specific gravity of soil |
| B. | qual to specific gravity of soil |
| C. | reater than specific gravity of soil |
| D. | ndependent of specific gravity of soil |
| Answer» C. reater than specific gravity of soil | |
| 44. |
Which of the following methods is more suitable for the determination of permeability of clayey soil ? |
| A. | onstant head method |
| B. | alling head method |
| C. | orizontal permeability test |
| D. | one of the above |
| Answer» C. orizontal permeability test | |
| 45. |
For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass ? |
| A. | ven drying method |
| B. | and bath method |
| C. | lcohol method |
| D. | alcium carbide method |
| Answer» E. | |
| 46. |
The average coefficient of permeability of natural deposits |
| A. | arallel to stratification is always greater than that perpendicular to stratification |
| B. | arallel to stratification is always less than that perpendicular to stratification |
| C. | s always same in both directions |
| D. | arallel to stratification may or may not be greater than that perpendicular to stratification |
| Answer» B. arallel to stratification is always less than that perpendicular to stratification | |
| 47. |
Unconfmed compressive strength test is |
| A. | ndrained test |
| B. | rained test |
| C. | onsolidated undrained test |
| D. | onsolidated drained test |
| Answer» B. rained test | |
| 48. |
A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively |
| A. | .5 N/mm² and 30° |
| B. | .05 N/mm² and 0° |
| C. | .2 N/mm² and 0° |
| D. | .05 N/mm² and 45° |
| Answer» C. .2 N/mm² and 0° | |
| 49. |
Physical properties of a permeant which influence permeability are |
| A. | iscosity only |
| B. | nit weight only |
| C. | oth viscosity and unit weight |
| D. | one of the above |
| Answer» D. one of the above | |
| 50. |
The ultimate consolidation settlement of a soil is |
| A. | irectly proportional to the voids ratio |
| B. | irectly proportional to the compression index |
| C. | nversely proportional to the compression index |
| D. | one of the above |
| Answer» C. nversely proportional to the compression index | |