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. Cohesion is defined as:

a) Attraction of molecules of the same material

b) Attraction of molecules of different materials

c) Both of the above

d) None of the above

2 / 30

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

a) Clays

b) Silty clays

c) Sandy silts

d) Sands

3 / 30

3. *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

4 / 30

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

a) Increases

b) Decreases

c) Constant

d) All of the above

5 / 30

5. 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)

6 / 30

6. 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

7 / 30

7. The ratio of plasticity index to clay fraction is known as

a) Activity ratio or number

b) Flow index

c) Liquidity index

d) Toughness index

8 / 30

8. Which sequence is correct regarding different coefficients of friction in increasing order?

a) Kp-Ka-Ko

b) Ka-Ko-Kp

c) Ko-Kp-Ka

d) Kp-Ko-Ka

9 / 30

9. 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

10 / 30

10. The internal molecular attraction of a soil is known as cohesion:

a) Increases as the moisture content decreases

b) Is more in well-compacted clays

c) Depends upon the external applied load

d) Decreases as the moisture content increases

11 / 30

11. The length/diameter ratio of cylindrical specimens used in a triaxial test is generally

a) 1

b) 1.5

c) 2

d) 2.5

12 / 30

12. Base failure refers to a failure surface that:

a) Is above the toe of the slope

b) Includes the toe of the slope

c) Is below the toe of the slope

d) None of the above

13 / 30

13. Cohesionless soil is

a) Sand

b) Silt

c) Clay

d) Clay and silt

14 / 30

14. A decrease in water content results in a reduction of the volume of a soil in

a) Liquid state

b) Plastic state

c) Semi-liquid state

d) All of the above

15 / 30

15. 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

16 / 30

16. 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

17 / 30

17. Distribution of earth pressure with depth is:

a) Parabolic

b) Hydrostatic

c) Non-linear but increasing

d) Volume controlled

18 / 30

18. Mechanical stabilization is done by

a) Cement

b) Lime

c) Bitumen

d) Proper grading

19 / 30

19. An isobar is a line which connects the points of equal stress

a) Below GL

b) Above GL

c) At GL

d) Any of the above

20 / 30

20. Absorbed water in soil is

a) Same as free water

b) The water chemically combined in the crystal structure of the soil material

c) Having free movement through the soil by gravity

d) Water absorbed from the atmosphere by forces of attraction

21 / 30

21. The safe B.C. of a soil can be defined as:

a) Ultimate load on the bearing area

b) Load intensity beyond which the soil should not be loaded

c) Load at which the soil fails

d) Load beyond which the soil yields

22 / 30

22. The bearing capacity of soil depends on:

a) Grain size of the soil

b) Load intensity

c) On the load

d) Rate of loading

23 / 30

23. 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

24 / 30

24. The specific gravity of sandy soils/gravel is

a) <1.5

b) <2.0

c) >2.0

d) >2.5

25 / 30

25. The angle between the directions of the failure and the major principal plane is equal to:

a) 90° + effective angle of shearing resistance

b) 90° + half of the angle of shearing resistance

c) 45° + half of the angle of shearing resistance

d) 45° - half of the angle of shearing resistance

26 / 30

26. If s is the focal length of Kozeny's parabola and k is the coefficient of permeability, the seepage flow rate per unit length of the dam is given as

a) q = k.s

b) q = s/k

c) q = k√v

d) q = k/s

27 / 30

27. Talus' is the soil transported by

a) Wind

b) Water

c) Glacier

d) Gravitational force

28 / 30

28. 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

29 / 30

29. 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

30 / 30

30. The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated

a) Sands

b) Clays/cohesive soils

c) Gravels

d) Highly organic soils

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Soil Mechanics Online Test – Paper 2

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