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. Base failure refers to a failure surface that:

a) Is above the toe of the slope

b) Includes the toe of the slope

c) Is below the toe of the slope

d) None of the above

2 / 30

2. The minimum net pressure intensity causing shear failure of the soil is called:

a) Safe bearing capacity

b) Net ultimate bearing capacity

c) Net bearing capacity

d) Ultimate bearing capacity

3 / 30

3. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

4 / 30

4. The well foundation is normally used under:

a) Industrial buildings

b) Structures on river beds

c) Tall buildings

d) Offshore wells

5 / 30

5. 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

6 / 30

6. The angle of repose of soil is defined as the angle that an inclined plane makes with the horizontal when a body placed on it just sliding is:

a) maximum

b) minimum

c) average

d) vertical

7 / 30

7. Peat is composed of

a) Clay and sand

b) Decayed vegetable matter

c) Inorganic silt and silty clay

d) Synthetic chemicals

8 / 30

8. 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

9 / 30

9. Raising of water table in shallow foundations, near foundation level:

a) Reduces bearing capacity

b) Increases bearing capacity

c) Does not affect bearing capacity

d) Increases and then decreases bearing capacity

10 / 30

10. Pile foundations are normally used in:

a) Soft clayey soil

b) Loose sandy soil

c) Heavy loaded situations

d) When required bearing area is not available

11 / 30

11. 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

12 / 30

12. 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

13 / 30

13. The ratio of weight of water to the weight of solids in a given mass of soil is known as

a) Void ratio

b) Porosity

c) Specific gravity

d) Water content

14 / 30

14. A foundation may be classified as a strip foundation if:

a) Length is very large

b) Length is very large compared with uniform width

c) Load is applied at long intervals

d) None of the above

15 / 30

15. 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

16 / 30

16. As moisture content of soil increases, cohesion of soil

a) Increases

b) Decreases

c) Constant

d) All of the above

17 / 30

17. The difference between the undisturbed shear strength and remoulded shear strength is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

18 / 30

18. 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

19 / 30

19. 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

20 / 30

20. California Bearing Ratio test is used:

a) To find the bearing capacity of the soil

b) To find the thickness of a flexible pavement

c) To find the ratio of ultimate bearing capacity to net bearing capacity

d) None of the above

21 / 30

21. An isobar is a line which connects the points of equal stress

a) Below GL

b) Above GL

c) At GL

d) Any of the above

22 / 30

22. Hydrometer readings are corrected for

a) Temperature correction

b) Meniscus correction

c) Both a) and b) of above

d) None of the above

23 / 30

23. The wall constructed to resist horizontal pressure is:

a) Main wall

b) Partition wall

c) Retaining wall

d) All of the above

24 / 30

24. The angle between the horizontal and the slope of a heap produced by pouring clean dry sand from a small height is known as:

a) the angle of equilibrium

b) the angle of bulk

c) the angle of rest

d) the angle of repose

25 / 30

25. The critical exit gradient of the seepage of water in soils is

a) Directly proportional to the void ratio

b) Increases with a decrease in void ratio

c) Increases with a decrease in specific gravity

d) Inversely proportional to the specific gravity

26 / 30

26. The water content of soils can be accurately determined by

a) Calcium carbide

b) Sand bath

c) Alcohol method

d) Oven drying method

27 / 30

27. Earth pressure at rest 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) All of the above

28 / 30

28. If a solid suffers a change in volume by the application of external loads but recovers its volume immediately after the load is removed, such a soil is termed as:

a) Compressive soils

b) Plastic solids

c) Elastic soils

d) Perfect soils

29 / 30

29. "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)

30 / 30

30. Consolidation theory was enunciated by

a) Rankine

b) Westergaard

c) Skempton

d) Terzaghi

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Soil Mechanics Online Test – Paper 2

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