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. 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

2 / 30

2. 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

3 / 30

3. Particle size range is measured by

a) Effective size

b) Uniformity coefficient

c) Coefficient of curvature

d) None of the above

4 / 30

4. The maximum dry density occurs at a particular water content which is known as

a) Optimum moisture content

b) Maximum moisture content

c) Low moisture content

d) Water content

5 / 30

5. 'Loess' is silty clay formed by the action of

a) Wind

b) Water

c) Glacier

d) Gravitational force

6 / 30

6. A soil that is 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

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. 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%

9 / 30

9. The bearing capacity of a weak soil may be improved by:

a) Increasing the depth of the foundation

b) Compacting the soil by ramming

c) Removing the poor soil and filling the gap with sand, gravel, etc.

d) All of the above

10 / 30

10. The soil having minimum/least bearing capacity is:

a) Moist clay

b) Sandy soil

c) Rock soil

d) Silt clay

11 / 30

11. Moisture content of saturated soil equals:

a) 0%

b) 100%

c) 50%

d) 90%

12 / 30

12. A foundation may be classified as spread foundation if:

a) Depth to width ratio is more than 2

b) Depth to width ratio is less than 2

c) Length to width ratio is more than 2

d) Length to width ratio is between 1 and 2

13 / 30

13. Compaction of soil is aimed at

a) Decreasing dry density

b) Increasing porosity

c) Decreasing void ratio

d) Decreasing shear strength

14 / 30

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

a) Angstroms

b) cm

c) mm

d) Micron

15 / 30

15. Standard Proctor test is used for determining

a) Optimum moisture content (OMC)

b) Void ratio

c) Coefficient of consolidation

d) Pavement thickness

16 / 30

16. 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

17 / 30

17. 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

18 / 30

18. 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

19 / 30

19. The maximum size of a clay particle is

a) 0.1mm

b) 0.3mm

c) 0.002mm

d) 0.005mm

20 / 30

20. 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

21 / 30

21. 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

22 / 30

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

a) 70%

b) 30%

c) 60%

d) 50%

23 / 30

23. 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

24 / 30

24. Stability analysis shall be made considering:

a) Total stresses

b) Normal stresses

c) Effective stresses

d) Shear stresses

25 / 30

25. 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

26 / 30

26. The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter is known as

a) Shrinkage limit

b) Plastic limit

c) Liquid limit

d) Consistency limit

27 / 30

27. 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

28 / 30

28. 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

29 / 30

29. A pycnometer is used to determine

a) Specific gravity and dry density

b) Water content and void ratio

c) Water content and specific gravity

d) Dry density and void ratio

30 / 30

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

a) Zero

b) 30°

c) 45°

d) 15°

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Soil Mechanics Online Test – Paper 2

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