MCQOPTIONS
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MCQOPTIONS
This section includes 95 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. |
With the increase in the amount of compaction energy________________? |
| A. | optimum water content increases but maximum dry density decreases |
| B. | optimum water content decreases but maximum dry density increases |
| C. | both optimum water content and maximum dry density increase |
| D. | both optimum water content and maximum dry density decrease |
| Answer» C. both optimum water content and maximum dry density increase | |
| 2. |
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 | |
| 3. |
When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported as_____________? |
| A. | negative |
| B. | zero |
| C. | non-plastic (NP) |
| D. | 1 |
| Answer» C. non-plastic (NP) | |
| 4. |
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 | |
| 5. |
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. | |
| 6. |
Voids ratio of a soil mass can_________________? |
| A. | never be greater than unity |
| B. | be zero |
| C. | take any value greater than zero |
| D. | take values between 0 and 1 only |
| Answer» D. take values between 0 and 1 only | |
| 7. |
Valid range for S, the degree of saturation of soil in percentage is______________? |
| A. | S>0 |
| B. | S<0 |
| C. | 0<100 |
| D. | 0 < S < 100 |
| Answer» E. | |
| 8. |
Valid range for n, the percentage voids, is______________? |
| A. | 0<100 |
| B. | 0 |
| C. | n<0 |
| Answer» B. 0 | |
| 9. |
Uniformity coefficient of a soil is__________________? |
| A. | always less than 1 |
| B. | always equal to 1 |
| C. | equal to or less than 1 |
| D. | equal to or gi eater than 1 |
| Answer» E. | |
| 10. |
Unconfmed compressive strength test is________________? |
| A. | undrained test |
| B. | drained test |
| C. | consolidated undrained test |
| D. | consolidated drained test |
| Answer» B. drained test | |
| 11. |
Toughness index is defined as the ratio of____________________? |
| A. | plasticity index to consistency index |
| B. | plasticity index to flow index |
| C. | liquidity index to flow index |
| D. | consistency index to liquidity index |
| Answer» C. liquidity index to flow index | |
| 12. |
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 | |
| 13. |
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 | |
| 14. |
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 | |
| 15. |
The value of compression index for a remoulded sample whose liquid limit is 50% is______________? |
| A. | 0.028 |
| B. | 0.28 |
| C. | 036 |
| D. | 0.036 |
| Answer» C. 036 | |
| 16. |
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 | |
| 17. |
The ultimate consolidation settlement of a soil is________________? |
| A. | directly proportional to the voids ratio |
| B. | directly proportional to the compression index |
| C. | inversely proportional to the compression index |
| D. | none of the above |
| Answer» C. inversely proportional to the compression index | |
| 18. |
The total discharge from two wells situated near to each other is_________________? |
| A. | sum of the discharges from individual wells |
| B. | less than the sum of the discharges from individual wells |
| C. | greater than the sum of the discharges from individual wells |
| D. | equal to larger of the two discharges from individual wells |
| Answer» C. greater than the sum of the discharges from individual wells | |
| 19. |
The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively__________________? |
| A. | zero and zero |
| B. | 0.5 kg/cm2 and zero |
| C. | 0.5 kg/cm2 and 0.5 kg/cm2 |
| D. | 1.0 kg/cm2 and 0.5 kg/cm2 |
| Answer» C. 0.5 kg/cm2 and 0.5 kg/cm2 | |
| 20. |
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 | |
| 21. |
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. | |
| 22. |
The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing_______________? |
| A. | cohesion and effective angle of shearing resistance |
| B. | cohesion and effective unit weight of soil |
| C. | effective unit weight of soil and effective angle of shearing resistance |
| D. | effective angle of shearing resistance |
| Answer» C. effective unit weight of soil and effective angle of shearing resistance | |
| 23. |
The ratio of volume of voids to the total volume of soil mass is called______________? |
| A. | air content |
| B. | porosity |
| C. | percentage air voids |
| D. | voids ratio |
| Answer» C. percentage air voids | |
| 24. |
The most suitable method for drainage of fine grained cohesive soils is________________? |
| A. | well ppint system |
| B. | vacuum method |
| C. | deep well system |
| D. | electroosmosis method |
| Answer» E. | |
| 25. |
The maximum dry density upto which any soil can be compacted depends upon____________? |
| A. | moisture content only |
| B. | amount of compaction energy only |
| C. | both moisture content and amount of compaction energy |
| D. | none of the above |
| Answer» D. none of the above | |
| 26. |
The major principal stress in an element of cohesionless 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 | |
| 27. |
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 | |
| 28. |
The hydraulic head that would produce a quick condition in a sand stratum of thickness 1.5 m, specific gravity 2.67 and voids ratio 0.67 is equal to_______________? |
| A. | 1.0m |
| B. | 1.5 m |
| C. | 2.0 m |
| D. | 3m |
| Answer» C. 2.0 m | |
| 29. |
The flownet for an earthen dam with 30 m water depth consists of 25 potential drops and 5 flow channels. The coefficient of permeability of dam material is 0.03 mm/sec. The discharge per meter length of dam is________________? |
| A. | 0.00018 nrVsec |
| B. | 0.0045 m3/sec |
| C. | 0.18m3/sec |
| D. | 0.1125m3/sec |
| Answer» B. 0.0045 m3/sec | |
| 30. |
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 |
| Answer» D. increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity | |
| 31. |
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 | |
| 32. |
The clay mineral with the largest swelling and shrinkage characteristics is_______________? |
| A. | kaolinite |
| B. | illite |
| C. | montmorillonite |
| D. | none of the above |
| Answer» D. none of the above | |
| 33. |
The average coefficient of permeability of natural deposits________________? |
| A. | parallel to stratification is always greater than that perpendicular to stratification |
| B. | parallel to stratification is always less than that perpendicular to stratification |
| C. | is always same in both directions |
| D. | parallel to stratification may or may not be greater than that perpendicular to stratification |
| Answer» B. parallel to stratification is always less than that perpendicular to stratification | |
| 34. |
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» C. angle of repose | |
| 35. |
The admixture of coarser particles like sand or silt to clay causes______________? |
| A. | decrease in liquid limit and increase in plasticity index |
| B. | decrease in liquid limit and no change in plasticity index |
| C. | decrease in both liquid limit and plasticity index |
| D. | increase in both liquid limit and plasticity index |
| Answer» D. increase in both liquid limit and plasticity index | |
| 36. |
Sand particles are made of________________? |
| A. | rock minerals |
| B. | kaolinite |
| C. | illite |
| D. | montmorillonite |
| Answer» B. kaolinite | |
| 37. |
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% | |
| 38. |
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 | |
| 39. |
Residual soils are formed by______________? |
| A. | glaciers |
| B. | wind |
| C. | water |
| D. | none of the above |
| Answer» E. | |
| 40. |
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 | |
| 41. |
Rankine’s theory of earth pressure assumes that the back of the wall is_______________? |
| A. | plane and smooth |
| B. | plane and rough |
| C. | vertical and smooth |
| D. | vertical and rough |
| Answer» D. vertical and rough | |
| 42. |
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» B. flow condition occurring in cohesive soils | |
| 43. |
Physical properties of a permeant which influence permeability are________________? |
| A. | viscosity only |
| B. | unit weight only |
| C. | both viscosity and unit weight |
| D. | none of the above |
| Answer» D. none of the above | |
| 44. |
Inorganic soils with low compressibility are represented by_________________? |
| A. | MH |
| B. | SL |
| C. | ML |
| D. | CH |
| Answer» D. CH | |
| 45. |
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. | |
| 46. |
In the plate loading test for determining the bearing capacity of soil, the size of square bearing 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 | |
| 47. |
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 | |
| 48. |
In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as__________________? |
| A. | consolidated drained test |
| B. | consolidated undrained test |
| C. | unconsolidated drained test |
| D. | unconsolidated undrained test |
| Answer» C. unconsolidated drained test | |
| 49. |
In a deposit of normally consolidated clay_________________? |
| A. | effective stress increases with depth but water content of soil and un-drained strength decrease with depth |
| B. | effective stress and water content increase with depth but undrained strength decreases with depth |
| C. | effective stress and undrained strength increase with depth but water content decreases with depth |
| D. | effective stress, water content and undrained strength decrease with depth |
| Answer» D. effective stress, water content and undrained strength decrease with depth | |
| 50. |
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 | |