Soil Mechanics Online Test - Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. The total stress in a soil is

a) Force per neutral area

b) Force per unit effective area

c) Stress taken by the particles of the soil

d) Stress taken by pure water

2 / 30

2. Agent of transportation for alluvial soils is

a) Water

b) Gravity

c) Wind

d) Ice

3 / 30

3. Shear strength of a soil is a unique function of

a) Effective stress only

b) Total stress only

c) Both total and effective stress

d) None of the above

4 / 30

4. Bearing capacity of soil is determined by:

a) Plate load test

b) Standard cone test

c) Both (a) and (b) of above

d) None of the above

5 / 30

5. Terzaghi's analysis assumes:

a) Soil is homogeneous and isotropic

b) Elastic zone has straight boundaries inclined at (Theta = theta) to the horizontal and plastic zones fully developed

c) Failure zones do not extend above the horizontal plane through the base of the footing

d) All of the above

6 / 30

6. The difference between the undisturbed shear strength and remoulded shear strength is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

7 / 30

7. 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.

8 / 30

8. Cohesion of soil may

a) Not be affected due to the moisture content

b) Increases as the moisture content increases

c) Decreases as the moisture content decreases

d) More in well-compacted solids

9 / 30

9. The bottom plug in well foundation is used:

a) To seal off the water

b) For stable resting

c) To transfer load from the steining to the soil

d) Create a working place in the well

10 / 30

10. As moisture content of soil increases, cohesion of soil

a) Increases

b) Decreases

c) Constant

d) All of the above

11 / 30

11. For the same soil, an increase in compaction effort

a) Does not affect OMC

b) Increases OMC

c) Decreases OMC

d) Decreases more dry density

12 / 30

12. Combined footing is generally used when:

a) Number of columns are more than two and are spaced far apart

b) Number of columns are two and are spaced close to each other

c) Number of columns are two and are spaced far apart

d) None of the above

13 / 30

13. The admixture used in soil stabilization is

a) Cement

b) Lime

c) Bitumen

d) Any of the above

14 / 30

14. The thickness of adsorbed layers of soil is measured in

a) Angstroms

b) cm

c) mm

d) Micron

15 / 30

15. The minimum net pressure intensity causing shear failure of the soil is called:

a) Safe bearing capacity

b) Net ultimate bearing capacity

c) Net bearing capacity

d) Ultimate bearing capacity

16 / 30

16. A foundation may be classified as deep if:

a) Depth to width ratio is more than 2

b) Depth to width ratio is less than 2

c) Length to width ratio is more than 2

d) Length to width ratio is between 1 and 2

17 / 30

17. Physical weathering occurs due to

a) Temperature changes

b) Wedging action of ice

c) Spreading of roots of plants

d) All of the above

18 / 30

18. The passive earth pressure of a soil 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) Any of the above

19 / 30

19. The active earth pressure of a soil can be defined as lateral pressure exerted by the soil when

a) The retaining wall tends to move away from the backfill

b) The wall moves into the soil

c) The wall moves relative to the backfill

d) Any of the above

20 / 30

20. The relation between dry density (yd), bulk density (y), and water content (w) is

a) y = yd / (1 + w)

b) yd = y / (1 + w)

c) w = y / (1 + yd)

d) w = y / (1 - yd)

21 / 30

21. Mechanical stabilization is done by

a) Cement

b) Lime

c) Bitumen

d) Proper grading

22 / 30

22. Peat is composed of

a) Clay and sand

b) Decayed vegetable matter

c) Inorganic silt and silty clay

d) Synthetic chemicals

23 / 30

23. The finest size of soil particle is

a) Clay

b) Silt

c) Sand

d) Cobble

24 / 30

24. The ratio of settlement at any time t, to the final settlement is called

a) Percentage settlement

b) Partial settlement

c) Degree of consolidation

d) Residual consolidation

25 / 30

25. Electrical analogy method is used to

a) Find electrical conductivity of soil

b) Draw flow net

c) Find the depth to the water table

d) Find the water content in a soil

26 / 30

26. The curve A, B, and C shown in fig below are respectively the stress-strain curves for stress of

a) Dense sand, clay, and loose sand

b) Dense sand, loose sand, and clay

c) Loose sand, dense sand, and clay

d) Clay, loose sand, and dense sand

27 / 30

27. * When water content in a soil is reduced beyond the shrinkage limit, the soil will be:

a) Solid state

b) Liquid state

c) Semi-solid state

d) Plastic state

28 / 30

28. Moisture content for the optimum moisture content of silt is

a) 5%

b) 10%

c) 15%

d) 20%

29 / 30

29. Pile foundations are normally used in:

a) Soft clayey soil

b) Loose sandy soil

c) Heavy loaded situations

d) When required bearing area is not available

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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