Soil Mechanics Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
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1 / 30

1. The maximum dry density occurs at a particular water content which is known as

a) Optimum moisture content

b) Maximum moisture content

c) Low moisture content

d) Water content

2 / 30

2. The phreatic line is

a) The u/s face of the earth dam

b) The d/s face of the earth dam

c) The top flow line

d) None of the above

3 / 30

3. The maximum water content at which a reduction in water content does not cause a decrease in the volume of the soil mass is known as

a) Liquid limit

b) Plastic limit

c) Shrinkage limit

d) Ductile limit

4 / 30

4. Void ratio, e, of a soil can

a) Never be greater than one

b) Be equal to zero

c) Be greater than zero

d) Be between 0 and 1

5 / 30

5. The critical height in the stability of the soil is the:

a) Maximum height at which the stability of the slope is possible

b) Minimum height at which the stability of the slope is possible

c) Maximum vertical height of the soil in an open excavation

d) None of the above

6 / 30

6. The types of compaction suitable for cohesionless soil having large thickness are

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

7 / 30

7. If the failure of a finite slope occurs through the toe, it is known as:

a) Slope failure

b) Base failure

c) Face failure

d) Toe failure

8 / 30

8. Black cotton soil is not suitable for foundations because of its:

a) Black color

b) Low bearing capacity

c) Cohesive particles

d) Swelling and shrinkage nature

9 / 30

9. A soil sample has the following characteristics: S-50%, G-2.6, W-30%, find the void ratio, e

a) 1.56

b) 2.56

c) 0.56

d) 5.61

10 / 30

10. The permissible settlement in the case of an isolated foundation on clayey soils is:

a) 25 mm

b) 45 mm

c) 65 mm

d) 85 mm

11 / 30

11. Pile foundations are enormously used in:

a) Bridge foundations

b) Machine foundations

c) Tall buildings

d) Towers

12 / 30

12. The ultimate B.C. of a soil can be defined as:

a) Ultimate load on the bearing area

b) Safe load on the bearing area

c) Load at which the soil fails

d) Load beyond which the soil should not be loaded

13 / 30

13. The void ratio of soil is

a) The ratio of voids to solids in volume

b) The ratio of voids to gross volume

c) The ratio of solids to voids in volume

d) The ratio of solid volume to gross volume

14 / 30

14. Piping in soils is due to

a) Low exit gradient

b) Erosion of subsoil by high velocity of seepage flow

c) Leakage of water through pipes laid in dams

d) Passage of water through well-connected pores in soil.

15 / 30

15. The tendency of dense sand to expand on the application of shearing load is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

16 / 30

16. The density of soil can be increased by

a) By reducing the air voids

b) By elastic compression of soil grains

c) By expelling water from soil pores

d) All of the above

17 / 30

17. Earth pressure at rest can be defined as lateral pressure exerted by the soil when the retaining wall tends to

a) Move away from the backfill

b) No movement relative to the backfill

c) Move into the soil

d) All of the above

18 / 30

18. The force exerted by flowing water on the sediment particles to cause their motion is called:

a) Eddy force

b) Buoyant force

c) Tractive force

d) Kinematic force

19 / 30

19. The basis for all soil classification systems is

a) Permeability characteristics

b) Specific gravity of solids

c) Grain size and plasticity characteristics

d) None of the above

20 / 30

20. The rise of the water table below the foundation influences the bearing capacity of soil mainly by reducing:

a) 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) Cohesion and effective angle of shearing resistance

21 / 30

21. Cohesive soils are generally/normally

a) Plastic and also compressible

b) Elastic and also compressible

c) Plastic but incompressible

d) None of the above

22 / 30

22. The soil having minimum/least bearing capacity is:

a) Moist clay

b) Sandy soil

c) Rock soil

d) Silt clay

23 / 30

23. Quick sand is a

a) Type of sand

b) Condition in which a cohesionless soil loses its strength because of upward flow of water

c) Moist sand containing small particles

d) Condition which occurs in coarse sand

24 / 30

24. The degree of saturation in soils can be defined as the ratio of

a) Water by weight to the dry soil weight

b) Volume of water to the gross volume of soil

c) Volume of water to volume of voids in soil

d) Weight of the water to weight of the soil

25 / 30

25. Compaction is done to remove... from the soil.

a) Air

b) Water

c) Soil

d) None of the above

26 / 30

26. The base width of the retaining wall is B. What is the maximum permissible eccentricity if the wall should not fail in tension?

a) B/3

b) 2B/3

c) B/6

d) B/2

27 / 30

27. The strength of a soil is generally identified by

a) Direct tensile stress

b) Net stress

c) Ultimate shear stress

d) Direct ultimate compressive stress

28 / 30

28. Pick up the correct sequence of geological cycle for the formation of soil

a) Transportation - Upheaval - Deposition - Weathering

b) Transportation - Deposition - Weathering - Upheaval

c) Weathering - Upheaval - Deposition - Transportation

d) Weathering - Transportation - Deposition - Upheaval

29 / 30

29. A soil that is fully consolidated under the existing overburden pressure is known as

a) Normally consolidated soil

b) Overconsolidated soil

c) Underconsolidated soil

d) None of the above

30 / 30

30. The well foundation is normally used under:

a) Industrial buildings

b) Structures on river beds

c) Tall buildings

d) Offshore wells

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Soil Mechanics Online Test – Paper 2

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