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. One of the graphical methods for earth pressure determination is:

a) Newmark's influence chart method

b) Mohr diagram method

c) Culmann's method

d) Taylor's method

2 / 30

2. The functional equation for specific gravity (G), water content (w), void ratio (e), and degree of saturation (Sr) is

a) w = SrG / e

b) e = Srw / G

c) e = wG / Sr

d) G = Swr / e

3 / 30

3. The bulk density of soil can be defined as

a) Ratio of the weight of the solids to the volume of solids

b) Ratio of unit weight of soil to that of water

c) Unit weight of soil

d) Unit weight of soil under saturated condition

4 / 30

4. Rise of water table in cohesionless soils up to the ground surface reduces the net ultimate bearing capacity approximately by:

a) 90%

b) 80%

c) 50%

d) 40%

5 / 30

5. The bearing capacity of soil depends on:

a) Grain size of the soil

b) Load intensity

c) On the load

d) Rate of loading

6 / 30

6. Falling head permeability test is preferable when the soil sample is

a) Clayey

b) Silty sand

c) Sandy

d) Sandy gravel

7 / 30

7. A foundation may be classified as shallow if:

a) Depth is less than 6 m

b) Depth is less than its width

c) Depth is less than 1 m

d) None of the above

8 / 30

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

a) 1

b) 10

c) 5

9 / 30

9. 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

10 / 30

10. The ultimate bearing capacity of frictionless soils is:

a) 4.5c to 6c

b) 2c to 4c

c) 1c to 3c

d) 2c to 5c

11 / 30

11. Cohesionless soil is

a) Sand

b) Silt

c) Clay

d) Clay and silt

12 / 30

12. Who coined the term Soil Mechanics?

a) Terzaghi

b) Cassagrande

c) Newmark

d) Rankine

13 / 30

13. In an undrained plastic clay, the shear strength is due to

a) Internal friction

b) Cohesion

c) Inter-granular friction

d) None of the above

14 / 30

14. Well foundation in sandy soils derive their bearing capacity from:

a) Skin friction

b) Point bearing

c) Uplift

d) Skin friction & point bearing

15 / 30

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

a) Angstroms

b) cm

c) mm

d) Micron

16 / 30

16. The bearing capacity factors (N_c, N_q,) and (N_r) are functions of:

a) Cohesion only

b) Angle of internal friction

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

d) None of the above

17 / 30

17. 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

18 / 30

18. The factor of safety of slopes is defined as:

a) FS= Total stress / Effective stress

b) FS= Shear strength / Shear stress

c) FS= Overturning moment / Resisting moment

d) FS= Shear stress / Normal stress

19 / 30

19. 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

20 / 30

20. Peat is composed of

a) Clay and sand

b) Decayed vegetable matter

c) Inorganic silt and silty clay

d) Synthetic chemicals

21 / 30

21. The difference between total pressure and pore water pressure is known as

a) Major principal stress

b) Minor principal stress

c) Effective stress

d) None of the above

22 / 30

22. 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)

23 / 30

23. Physical weathering occurs due to

a) Temperature changes

b) Wedging action of ice

c) Spreading of roots of plants

d) All of the above

24 / 30

24. The pressure-void ratio curve will be

a) Linear when plotted on ordinary paper

b) Linear when plotted on semi-log paper

c) Linear when plotted on log-log paper

d) None of the above

25 / 30

25. The value of net allowable bearing pressure is:

a) Net safe bearing capacity

b) Net safe settlement pressure

c) Minimum of net safe bearing capacity and net safe settlement pressure

d) Gross safe bearing capacity

26 / 30

26. Square root of times fitting method is used for calculating

a) Compression index

b) Coefficient of consolidation

c) Coefficient of compressibility

d) Coefficient of volume compressibility

27 / 30

27. A wall constructed to retain the earth from slippage on the hillside of the roadway is called:

a) Breast wall

b) Retaining wall

c) Parapet wall

d) Wing wall

28 / 30

28. 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

29 / 30

29. 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

30 / 30

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

a) 70%

b) 30%

c) 60%

d) 50%

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Soil Mechanics Online Test – Paper 2

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