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. Consolidation test of a soil sample is carried out to determine:

a) The void ratio in soil

b) The decrease in the total volume

c) The liquid limit of soil

d) The plastic limit of soil

2 / 30

2. Chemical weathering occurs because of

a) Oxidation

b) Carbonation

c) Hydration

d) All of the above

3 / 30

3. 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

4 / 30

4. If the volume of voids is equal to the volume of solids in a soil, then the values of porosity and voids ratio respectively are

a) 1.0 and 0

b) 0 and 1

c) 0.5 and 1

d) 1 and 0.5

5 / 30

5. 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

6 / 30

6. Negative skin friction is to be considered when:

a) Fill settles relative to the pile

b) Pile settles relative to the fill

c) Fill and pile settle together

d) Water table rises

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7. Which is the correct definition of soil in the geotechnical engineer's point of view?

a) Soil is the top surface of the earth where plants can grow.

b) Soil is the unconsolidated material consisting of particles produced by the disintegration of rock, which may or may not contain organic matter.

c) Soil is the relatively thin surface zone that can contain moisture.

d) None of the above.

8 / 30

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

a) stress controlled

b) strain controlled

c) drainage controlled

d) volume controlled

9 / 30

9. The structure that derives its stability due to self-weight is:

a) Sheet pile wall

b) Bulkhead

c) Cantilever retaining wall

d) Masonry retaining wall

10 / 30

10. 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

11 / 30

11. Toe failure is most likely in the case of:

a) Steep slopes

b) Gentle slopes

c) All inclinations

d) Very steep slopes

12 / 30

12. Plasticity index is obtained as the difference between

a) Liquid limit and shrinkage limit

b) Shrinkage limit and plastic limit

c) Liquid limit and plastic limit

d) None of the above

13 / 30

13. The bearing capacity of soil depends upon:

a) Shape and size of the particles

b) Cohesive properties of particles

c) Internal frictional resistance of particles

d) All of the above

14 / 30

14. The percentage voids (n) has a value

a) 0 < n < 100

b) Sr ≤ 0

c) n > 0

d) n ≤ 0

15 / 30

15. The ratio of plasticity index to flow index is called

a) Activity ratio

b) Liquidity index

c) Toughness index

d) Shrinkage index

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16. The base width of the retaining wall is B. What is the maximum permissible eccentricity if the wall should not fail in tension?

a) B/3

b) 2B/3

c) B/6

d) B/2

17 / 30

17. The dry density of soil can be defined as

a) Weight of solids to the total volume of the soil

b) Weight of the soil to the volume of the soil

c) Unit weight of the soil to the unit weight of water

d) None of the above

18 / 30

18. In an earthen dam, the phreatic line is

a) Straight line

b) Circular line

c) Parabolic

d) Zigzag

19 / 30

19. Raft foundation is a type of:

a) Deep foundation

b) Shallow foundation

c) Foundation under water

d) None of the above

20 / 30

20. Weathering of soils is caused by

a) Periodical temperature changes

b) Impact and splitting action of flowing water

c) Impact and splitting action of plants and animals

d) All of the above

21 / 30

21. A foundation may be classified as deep 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

22 / 30

22. Honeycombed structure is found in

a) Gravels

b) Coarse sands

c) Fine silt and clays

d) Highly plastic clays

23 / 30

23. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

24 / 30

24. The triaxial apparatus is usually used for

a) Unconsolidated-untrained test

b) Consolidated-untrained test

c) Drained test

d) All of the above

25 / 30

25. In an undrained plastic clay, the shear strength is due to

a) Internal friction

b) Cohesion

c) Inter-granular friction

d) None of the above

26 / 30

26. If the water content of a fully saturated soil mass is 100%, then the voids will be

a) Less than the specific gravity of soil

b) Equal to the specific gravity of soil

c) Greater than the specific gravity of soil

d) Independent of the specific gravity of soil

27 / 30

27. 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

28 / 30

28. 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

29 / 30

29. 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

30 / 30

30. Inorganic soils with low plasticity are denoted by

a) ML

b) CH

c) MH

d) SH

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Soil Mechanics Online Test – Paper 2

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