Soil Mechanics Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
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1 / 30

1. Saturated soil is concerned with

a) Two-phase system

b) Three-phase system

c) One-phase system

d) All of the above

2 / 30

2. 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

3 / 30

3. Over-consolidated soils caused due to:

a) erosion of overburden

b) melting of ice sheets after glaciations

c) permanent rise of water table

d) all of the above

4 / 30

4. Consolidation theory was enunciated by

a) Rankine

b) Westergaard

c) Skempton

d) Terzaghi

5 / 30

5. 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

6 / 30

6. 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

7 / 30

7. In the modified Proctor test, the drop height of the rammer is

a) 30cm

b) 45cm

c) 60cm

d) 75cm

8 / 30

8. Standard Proctor test is used for determining

a) Optimum moisture content (OMC)

b) Void ratio

c) Coefficient of consolidation

d) Pavement thickness

9 / 30

9. Sheet pile walls are used as:

a) Retaining walls for waterfront construction

b) Load-bearing pile foundations

c) Seepage preventing devices

d) Uplift preventing devices

10 / 30

10. 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

11 / 30

11. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

12 / 30

12. A fully saturated soil is called

a) One phase system

b) Two phase system with soil and air

c) Two phase system with soil and water

d) Three phase system

13 / 30

13. * When water content in a soil is reduced beyond the shrinkage limit, the soil will be:

a) Solid state

b) Liquid state

c) Semi-solid state

d) Plastic state

14 / 30

14. The degree of saturation, Sr, of soil in percentage has a value

a) Sr > 0

b) Sr ≤ 0

c) 0 < S < 100

d) 0 ≤ S ≤ 100

15 / 30

15. Most of the shear tests are done in equipment which is:

a) stress controlled

b) strain controlled

c) drainage controlled

d) volume controlled

16 / 30

16. Inorganic soils with low plasticity are denoted by

a) ML

b) CH

c) MH

d) SH

17 / 30

17. 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

18 / 30

18. Bleeder wells are required to

a) Increase discharge from the main well

b) Store drainage water

c) Collect seepage water in dams

d) Relieve pressure in impervious layers

19 / 30

19. 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

20 / 30

20. 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

21 / 30

21. 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

22 / 30

22. In the case of retaining walls, surcharge is:

a) Excess moisture in wall

b) Extra load on the wall

c) Additional load carrying capacity of wall

d) Extra load on the horizontal backfill

23 / 30

23. Clays containing organic matter are made suitable for stabilization by first adding a small percentage of

a) Hydrated lime

b) Cement

c) Calcium chloride

d) Resins

24 / 30

24. Active earth pressure is

a) Always less than passive earth pressure

b) Always greater than passive earth pressure

c) Sometimes greater than passive earth pressure

d) Equal to passive earth pressure

25 / 30

25. "If Nf, Nd, and H are the total flow channels, the total number of potential drops and total hydraulic head difference, respectively, the discharge, q, through the complete flow is given by

a) q = √H(Nf/Nd)

b) q = KH(Nd/Nf)

c) q = KH(Nf/Nd)

d) q = KH√(Nf/Nd)

26 / 30

26. As sheet pile walls are embedded in soil, for the design of:

a) Active earth pressure only

b) Earth pressure at rest only

c) Passive earth pressure only

d) Active and passive earth pressure both considered

27 / 30

27. The types of compaction suitable for cohesionless soil having large thickness are

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

28 / 30

28. Soil transported by water and deposited at the bottom of the lake is known as

a) Alluvial soil

b) Lacustrine soil

c) Loess

d) Dune sand

29 / 30

29. Moisture content of saturated soil equals:

a) 0%

b) 100%

c) 50%

d) 90%

30 / 30

30. The reduction factor to the bearing capacity of soil due to the water table at a depth equal to half of the width of the footing below the footing is:

a) 0.25

b) 0.50

c) 0.75

d) 1.00

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Soil Mechanics Online Test – Paper 2

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