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 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

2 / 30

2. The well foundation is normally used under:

a) Industrial buildings

b) Structures on river beds

c) Tall buildings

d) Offshore wells

3 / 30

3. * Angle of internal friction is minimum for:

a) Angular grained loose soil

b) Angular grained dense soil

c) Round grained loose soil

d) Clay

4 / 30

4. A vertical wall is subjected to a liquid pressure on its one side, the total pressure on the wall acts at a distance of:

a) H/3

b) H/2

c) 2H/3

d) 3H/4

5 / 30

5. Cohesionless soils are formed due to

a) Oxidation of rocks

b) Leaching action of water on rocks

c) Blowing of hot and cold wind

d) Physical disintegration of rock

6 / 30

6. The finest size of soil particle is

a) Clay

b) Silt

c) Sand

d) Cobble

7 / 30

7. Silts have the following property

a) Plasticity

b) Limited plasticity

c) Limited or no plasticity

d) Elasticity

8 / 30

8. Cohesive soils are generally/normally

a) Plastic and also compressible

b) Elastic and also compressible

c) Plastic but incompressible

d) None of the above

9 / 30

9. The passive earth pressure of a soil can be defined as lateral pressure exerted by the soil when the retaining wall tends to

a) Move away from the backfill

b) No movement relative to the backfill

c) Move into the soil

d) Any of the above

10 / 30

10. The relation between dry density (ρd), bulk density (ρ), and water content (w) is

a) ρ = ρd / (1 + w)

b) ρd = ρ / (1 + w)

c) w = ρ / (1 + ρd)

d) w = ρd / (1 + ρ)

11 / 30

11. The curve A, B, and C shown in fig below are respectively the stress-strain curves for stress of

a) Dense sand, clay, and loose sand

b) Dense sand, loose sand, and clay

c) Loose sand, dense sand, and clay

d) Clay, loose sand, and dense sand

12 / 30

12. In an earthen dam, the phreatic line is

a) Straight line

b) Circular line

c) Parabolic

d) Zigzag

13 / 30

13. 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

14 / 30

14. Piping in soils is due to

a) Low exit gradient

b) Erosion of subsoil by high velocity of seepage flow

c) Leakage of water through pipes laid in dams

d) Passage of water through well-connected pores in soil.

15 / 30

15. 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

16 / 30

16. 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

17 / 30

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

a) 30cm

b) 45cm

c) 60cm

d) 75cm

18 / 30

18. 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

19 / 30

19. 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

20 / 30

20. Soil which contains particles of different sizes in good proportion is called

a) Uniform soil

b) Well-graded soil

c) Consistent soil

d) None of the above

21 / 30

21. Flow lines and equipotential lines are

a) Parallel to each other

b) Perpendicular to each other

c) Not intersecting lines

d) Intersecting lines at 90°

22 / 30

22. 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%

23 / 30

23. A plane inclined at an angle to the horizontal at which the soil is expected to stay in the absence of any lateral support is known as:

a) Natural slope line

b) The stable line

c) Repose line

d) All of the above

24 / 30

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

a) 1

b) 1.5

c) 2

d) 2.5

25 / 30

25. 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

26 / 30

26. The shear strength of a soil

a) Is directly proportional to the depth of the soil

b) Is directly proportional to the angle of repose of the soil

c) Increases with normal stress

d) Decreases with an increase in the normal stress

27 / 30

27. 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

28 / 30

28. The maximum size of a clay particle is

a) 0.1mm

b) 0.3mm

c) 0.002mm

d) 0.005mm

29 / 30

29. 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

30 / 30

30. Electrical analogy method is used to

a) Find electrical conductivity of soil

b) Draw flow net

c) Find the depth to the water table

d) Find the water content in a soil

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Soil Mechanics Online Test – Paper 2

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