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. Inorganic soils with low plasticity are denoted by

a) ML

b) CH

c) MH

d) SH

2 / 30

2. *Coefficient of earth pressure at rest is:

a) Less than active earth pressure but greater than passive earth pressure

b) Greater than active earth pressure but lesser than passive earth pressure

c) Greater than both active and passive earth pressure

d) Lesser than both active and passive earth pressure

3 / 30

3. In an earthen dam, the phreatic line is

a) Straight line

b) Circular line

c) Parabolic

d) Zigzag

4 / 30

4. A plane inclined at an angle 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) The stable line

c) Repose line

d) All of the above

5 / 30

5. The angle of internal friction depends upon

a) Particle shape and roughness

b) Normal direct pressure

c) The amount of interlocking

d) All of the above

6 / 30

6. 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

7 / 30

7. The neutral stress in a soil mass is

a) Force per neutral area

b) Force per unit effective area of the soil

c) Stress shared by the particles of the soil

d) Stress shared by the pore water

8 / 30

8. The degree of saturation, Sr, of soil in percentage has a value

a) Sr > 0

b) Sr ≤ 0

c) 0 < S < 100

d) 0 ≤ S ≤ 100

9 / 30

9. If the sand in situ is in the densest state, then its relative density is

a) Equal to zero

b) Equal to one

c) Between 0 and 1

d) Greater than 1

10 / 30

10. 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

11 / 30

11. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio, respectively, are:

a) 1.0 and 0.0

b) 0.0 and 1.0

c) 0.5 and 1.0

d) 1.0 and 0.5

12 / 30

12. The bearing capacity of soil primarily depends on:

a) Depends on the size of the footing

b) Load intensity

c) Depends on the load

d) Rate of loading

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13. Berms are used to:

a) Increase the weight of the dam

b) Reduce seepage losses

c) Increase shear strength

d) Increase factor of safety

14 / 30

14. Most of the shear tests are done in equipment which is:

a) stress controlled

b) strain controlled

c) drainage controlled

d) volume controlled

15 / 30

15. 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)

16 / 30

16. Three phase diagram of soil represents

a) Solids, pebbles, and clay

b) Dust, fine sand, and coarse sand

c) Solids, water, and air

d) Solid volume and mass

17 / 30

17. 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

18 / 30

18. "If Nf, Nd, and H are the total flow channels, the total number of potential drops and total hydraulic head difference, respectively, the discharge, q, through the complete flow is given by

a) q = √H(Nf/Nd)

b) q = KH(Nd/Nf)

c) q = KH(Nf/Nd)

d) q = KH√(Nf/Nd)

19 / 30

19. 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

20 / 30

20. The angle of internal friction for cohesive soils is equal to:

a) Zero

b) 30°

c) 45°

d) 15°

21 / 30

21. 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

22 / 30

22. The relationship between void ratio (e) and porosity ratio (n) is

a) n = e / (1-n)

b) e = n / (1-n)

c) e = (1+n) / (1-e)

d) (1+e) / (1-e)

23 / 30

23. Three-phase system is concerned with

a) Partially saturated soil

b) Saturated soil

c) Dry soil

d) All of the above

24 / 30

24. 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

25 / 30

25. The structure that derives its stability due to self-weight is:

a) Sheet pile wall

b) Bulkhead

c) Cantilever retaining wall

d) Masonry retaining wall

26 / 30

26. Raft foundation is a type of:

a) Deep foundation

b) Shallow foundation

c) Foundation under water

d) None of the above

27 / 30

27. The seepage force is proportional to

a) Head loss

b) Flow net

c) Head at upstream

d) Equipotential gradient

28 / 30

28. The reduction factor to the bearing capacity of soil due to the water table at a depth equal to half of the width of the footing below the footing is:

a) 0.25

b) 0.50

c) 0.75

d) 1.00

29 / 30

29. Shearing strength of cohesionless soil depends upon

a) Dry density

b) Void ratio

c) Loading rate

d) Normal stress

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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