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 law which states that the velocity of flow through a porous medium is directly proportional to the hydraulic gradient is

a) Newton's law

b) Stokes's law

c) Darcy's law

d) Reynolds's law

2 / 30

2. 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

3 / 30

3. Which of the following is not the purpose of a foundation?

a) To distribute the weight of the structure

b) To load the substratum evenly

c) To provide a level surface for building construction

d) To increase the safe bearing capacity of the soil

4 / 30

4. The types of compaction suitable in a congested area for cohesive as well as cohesionless soil are

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

5 / 30

5. The lateral earth pressure of the soil moves towards the retaining wall indicates

a) Active earth pressure

b) Passive earth pressure

c) Constant

d) All of the above

6 / 30

6. The ratio of the difference between the void ratio of the soil in its loosest and its natural state and fully dense state is termed as

a) Degree of density

b) Density index

c) Relative density

d) Any of the above

7 / 30

7. If the resultant force at the face of the retaining wall is much more than frictional resistances at the bottom, the failure will be due to:

a) Crushing

b) Sliding

c) Upthrust

d) Overturning

8 / 30

8. Soil in which some of the intermediate size particles are missing is known as

a) Poorly graded soil

b) Non-uniform soil

c) Ill-proportioned soil

d) Skip-graded soil

9 / 30

9. In hydrometer analysis, the principle used

a) Newton's law

b) Darcy's law

c) Stoke's law

d) Rehbann's law

10 / 30

10. In a flow net, which of the following statements is true?

a) Flow lines and equipotential lines intersect at oblique angles

b) Flow lines and equipotential lines intersect orthogonally

c) Flow rate through each flow channel is different

d) The head along each flow line is constant

11 / 30

11. The process of improving the engineering properties of the soil and thus making it more stable is known as

a) Compaction

b) Consolidation

c) Stabilization

d) None of the above

12 / 30

12. The factor of safety of embankments shall be:

a) At least 1.0

b) At least 1.5

c) At least 2.0

d) At least 2.5

13 / 30

13. Plasticity index is obtained as the difference between

a) Liquid limit and shrinkage limit

b) Shrinkage limit and plastic limit

c) Liquid limit and plastic limit

d) None of the above

14 / 30

14. Specific gravity of soil is

a) Same for clays and sands

b) Determined by hydrometer

c) Less than 2.0 for most soils

d) More than 2.5 for most soils

15 / 30

15. On wetting, cohesive soils

a) Lose permeability

b) Gain shear strength

c) Lose elasticity

d) Decrease their shear strength

16 / 30

16. 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

17 / 30

17. The critical exit gradient of the seepage of water in soils

a) Increases with a decrease in the specific gravity

b) Increases with an increase in the specific gravity

c) Decreases with an increase in the liquid limit

d) None of the above

18 / 30

18. Cohesionless soil is

a) Sand

b) Silt

c) Clay

d) Clay and silt

19 / 30

19. In soil if the water content is equal to the liquid limit, its relative consistency is

a) 1

b) 10

c) 5

20 / 30

20. 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

21 / 30

21. 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

22 / 30

22. 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

23 / 30

23. Terzaghi's theory of one-dimensional consolidation assumes:

a) Soil is homogeneous and fully saturated

b) Water and soil particles are incompressible

c) Deformation of the soil is entirely due to a change in volume

d) All of the above

24 / 30

24. The water content of soils is defined as the ratio of

a) Volume of water to that of voids

b) Weight of water to the dry soil weight

c) Volume of water to the gross volume of soil

d) Weight of water to that of the soil

25 / 30

25. The dry density of soil can be defined as

a) Weight of solids to the total volume of the soil

b) Weight of the soil to the volume of the soil

c) Unit weight of the soil to the unit weight of water

d) None of the above

26 / 30

26. 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

27 / 30

27. Permeability of soil varies,

a) Inversely as the square of grain size

b) Inversely as the grain size

c) Directly as of grain size

d) Square of grain size

28 / 30

28. The top flow line in the case of seepage flow through an earthen dam has the shape of

a) Parabola

b) Ellipse

c) Hyperbola

d) None of the above

29 / 30

29. Raft foundation is a type of:

a) Deep foundation

b) Shallow foundation

c) Foundation under water

d) None of the above

30 / 30

30. Cohesive soils are:

a) Good for embankment as they have high shear strength

b) Poor for backfills because of large lateral pressure

c) Good for backfills because of poor shear strength

d) Low lateral pressure

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Soil Mechanics Online Test – Paper 2

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