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. Units of the coefficient of permeability

a) cm/sec

b) sec/cm

c) cm/sec^2

d) sec^2/cm

2 / 30

2. 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

3 / 30

3. 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

4 / 30

4. 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

5 / 30

5. 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

6 / 30

6. The maximum pressure which a soil can carry without shear failure is called:

a) Safe bearing capacity

b) Net ultimate bearing capacity

c) Net bearing capacity

d) Ultimate bearing capacity

7 / 30

7. Berms are used to:

a) Increase the weight of the dam

b) Reduce seepage losses

c) Increase shear strength

d) Increase factor of safety

8 / 30

8. The angle of internal friction depends upon

a) Particle shape and roughness

b) Normal direct pressure

c) The amount of interlocking

d) All of the above

9 / 30

9. The saturated density of soil can be expressed as

a) Weight of soil in water to its volume

b) Weight of soil minus weight of equivalent water to volume of soil

c) Weight of soil less weight of water in voids to the volume of solids plus voids in the soil

d) Unit weight of saturated soil

10 / 30

10. 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

11 / 30

11. Total lateral earth pressure is proportional to

a) Depth of the soil

b) Square of the depth of the soil

c) Angle of internal friction of the soil

d) None of the above

12 / 30

12. The seepage force in the soil is

a) Parallel to equipotential line

b) Perpendicular to equipotential line

c) Perpendicular to flow line

d) None of the above

13 / 30

13. The lateral earth pressure of the soil moves towards the retaining wall indicates

a) Active earth pressure

b) Passive earth pressure

c) Constant

d) All of the above

14 / 30

14. Specific gravity of solid particles is determined in a laboratory with:

a) Shrinkage Limit Method

b) Gas Jar Method

c) Density Bottle Method

d) All of the above

15 / 30

15. The shape & structure of an isobar is like a/an

a) Onion

b) Potato

c) Pumpkin

d) Turnip

16 / 30

16. 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

17 / 30

17. If the failure of a finite slope occurs through the toe, it is known as:

a) Slope failure

b) Base failure

c) Face failure

d) Toe failure

18 / 30

18. 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

19 / 30

19. 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

20 / 30

20. 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

21 / 30

21. The angle between the maximum shear stress plane and the horizontal plane is equal to

a) 15°

b) 30°

c) 45°

d) 50°

22 / 30

22. Black cotton soil is not suitable for foundations because of its:

a) Black color

b) Low bearing capacity

c) Cohesive particles

d) Swelling and shrinkage nature

23 / 30

23. If you are asked to classify soils into 3 categories, which of the following categorizations would you prefer?

a) Clayey, Silty, and Sandy

b) Clayey, Sandy, and Granular

c) Clayey, Silty, and Loamy

d) Coarse-grained, fine-grained, and highly organic

24 / 30

24. 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

25 / 30

25. In hydrometer analysis, the principle used

a) Newton's law

b) Darcy's law

c) Stoke's law

d) Rehbann's law

26 / 30

26. 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

27 / 30

27. The phreatic line is

a) The u/s face of the earth dam

b) The d/s face of the earth dam

c) The top flow line

d) None of the above

28 / 30

28. In a flow net, which of the following statements is true?

a) Flow lines and equipotential lines intersect at oblique angles

b) Flow lines and equipotential lines intersect orthogonally

c) Flow rate through each flow channel is different

d) The head along each flow line is constant

29 / 30

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

a) 0.25

b) 0.50

c) 0.75

d) 1.00

30 / 30

30. The assumption of Rankine's theory of earth pressure is:

a) The soil is semi-finite, homogeneous, dry, and cohesionless

b) Ground surface is a plane that may be inclined or horizontal

c) The back of the wall is vertical and smooth

d) All of the above

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Soil Mechanics Online Test – Paper 2

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