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 types of soil, which contain particles of almost the same size

a) Uniform soil

b) Uniformly graded soil

c) Skip-graded soil

d) Gap-graded soil

2 / 30

2. The soil transported by wind and deposited is called:

a) Aeolian soil

b) Marine soil

c) Alluvial soil

d) Lacustrine soil

3 / 30

3. The ratio of volume of air void to the volume of voids is known as

a) Air content

b) Wet porosity

c) Percentage voids

d) Degree of saturation

4 / 30

4. For testing a saturated clay for shear strength, the test recommended is

a) Direct shear test

b) Triaxial compression test

c) Unconfined compression test

d) All of the above

5 / 30

5. Negative skin friction affects the load carrying capacity of the pile by:

a) Increases

b) Decreases

c) Constant

d) None of the above

6 / 30

6. 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

7 / 30

7. A clay deposit that is not 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

8 / 30

8. The failure plane

a) Carries maximum shear stress

b) Does not carry maximum shear stress

c) Carries minimum shear stress

d) None of the above

9 / 30

9. 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

10 / 30

10. 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

11 / 30

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

a) 5%

b) 10%

c) 15%

d) 20%

12 / 30

12. For a well-graded soil, the coefficient of curvature will be between

a) 1 and 10

b) 2 and 8

c) 3 and 7

d) 1 and 3

13 / 30

13. The change of moisture content of soils changes

a) Angle of repose

b) Cohesive strength

c) Amount of compaction required

d) Any of the above

14 / 30

14. Weathering of soils is caused by

a) Periodical temperature changes

b) Impact and splitting action of flowing water

c) Impact and splitting action of plants and animals

d) All of the above

15 / 30

15. When a static load is applied, the consolidation is fast in the case of

a) Clays

b) Silty clays

c) Sandy silts

d) Sands

16 / 30

16. The u/s face of an earthen dam is

a) An equipotential line

b) A phreatic line

c) A flow line

d) None of the above

17 / 30

17. Westergaard's theory is more appropriate for

a) layered soils

b) homogeneous deposits

c) anisotropic soils

d) normally consolidated homogeneous soils

18 / 30

18. The coefficient of earth pressure for loose sand having an angle of internal friction of 30° is:

a) 0.5

b) 1/3

c) 3

d) 1

19 / 30

19. A soil sample contains a degree of saturation of 30%, find the percentage of air voids

a) 70%

b) 30%

c) 60%

d) 50%

20 / 30

20. On wetting, cohesive soils

a) Lose permeability

b) Gain shear strength

c) Lose elasticity

d) Decrease their shear strength

21 / 30

21. The assumption of Coulomb's theory is:

a) Backfill is dry, homogeneous, isotropic, and cohesionless

b) Rupture plane is linear and passes through the toe of the wall

c) Sliding wedge acts as a rigid body, and the value of earth pressure is obtained by considering the equilibrium of the wedge

d) All of the above

22 / 30

22. In a sand stratum of 1.5m thickness, specific gravity 2.67, and voids ratio 0.67, the head required for the quick condition is equal to

a) 2.5m

b) 2.0m

c) 1.5m

d) 3.0m

23 / 30

23. Wedge shape failure is assumed by:

a) Coulomb

b) Rankine

c) Poncelet

d) Terzaghi

24 / 30

24. Negative skin friction:

a) Increases the load-carrying capacity of the pile

b) Decreases the load-carrying capacity of the pile

c) Neither increases nor decreases the load-carrying capacity of the pile

d) All of the above

25 / 30

25. Overconsolidation may be due to

a) The weight of the ice sheet or glacier which is melted away

b) The weight of the landslide which is removed

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

d) None of the above

26 / 30

26. Soils are basically

a) Organic materials

b) Inorganic materials

c) Mineral materials

d) Organic and inorganic materials

27 / 30

27. 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

28 / 30

28. 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

29 / 30

29. The effective stress in a soil is equal to

a) Force per natural area

b) Force per unit effective area

c) Stress shared by the particles of the soil

d) Stress shared by the pore water

30 / 30

30. * Angle of internal friction is minimum for:

a) Angular grained loose soil

b) Angular grained dense soil

c) Round grained loose soil

d) Clay

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Soil Mechanics Online Test – Paper 2

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