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. A clay deposit that is not fully consolidated under the existing overburden pressure is known as

a) Normally consolidated soil

b) Overconsolidated soil

c) Underconsolidated soil

d) None of the above

2 / 30

2. Peat is composed of

a) Clay and sand

b) Decayed vegetable matter

c) Inorganic silt and silty clay

d) Synthetic chemicals

3 / 30

3. The minimum number of piles needed to support a wall is:

a) 1

b) 2

c) 3

d) 4

4 / 30

4. Cohesion is defined as:

a) Attraction of molecules of the same material

b) Attraction of molecules of different materials

c) Both of the above

d) None of the above

5 / 30

5. The failure plane

a) Carries maximum shear stress

b) Does not carry maximum shear stress

c) Carries minimum shear stress

d) None of the above

6 / 30

6. Bearing capacity of soil is determined by:

a) Plate load test

b) Standard cone test

c) Both (a) and (b) of above

d) None of the above

7 / 30

7. The finest size of soil particle is

a) Clay

b) Silt

c) Sand

d) Cobble

8 / 30

8. The minimum depth of the building foundation in:

a) Sandy soil is 80 cm to 100 cm

b) Clay soils is 90 cm to 160 cm

c) Rocky soils is 5 cm to 50 cm

d) All of the above

9 / 30

9. The bulk density of soil can be defined as

a) Ratio of the weight of the solids to the volume of solids

b) Ratio of unit weight of soil to that of water

c) Unit weight of soil

d) Unit weight of soil under saturated condition

10 / 30

10. The triaxial apparatus is usually used for

a) Unconsolidated-untrained test

b) Consolidated-untrained test

c) Drained test

d) All of the above

11 / 30

11. Consolidation is a process involving

a) Sudden compression of soil

b) Tilting and failure of the structure

c) Abnormal sinking of foundation

d) Gradual expulsion of pore water

12 / 30

12. Compaction of soil is aimed at

a) Decreasing dry density

b) Increasing porosity

c) Decreasing void ratio

d) Decreasing shear strength

13 / 30

13. The thickness of adsorbed layers of soil is measured in

a) Angstroms

b) cm

c) mm

d) Micron

14 / 30

14. Chemical weathering occurs because of

a) Oxidation

b) Carbonation

c) Hydration

d) All of the above

15 / 30

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

a) Steep slopes

b) Gentle slopes

c) All inclinations

d) Very steep slopes

16 / 30

16. 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

17 / 30

17. 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

18 / 30

18. In soil if the water content is equal to the liquid limit, its relative consistency is

a) 1

b) 10

c) 5

19 / 30

19. In an earthen dam, the phreatic line is

a) Straight line

b) Circular line

c) Parabolic

d) Zigzag

20 / 30

20. Berms are used to:

a) Increase the weight of the dam

b) Reduce seepage losses

c) Increase shear strength

d) Increase factor of safety

21 / 30

21. 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

22 / 30

22. The assumption of Coulomb's theory is:

a) Backfill is dry, homogeneous, isotropic, and cohesionless

b) Rupture plane is linear and passes through the toe of the wall

c) Sliding wedge acts as a rigid body, and the value of earth pressure is obtained by considering the equilibrium of the wedge

d) All of the above

23 / 30

23. 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

24 / 30

24. The seepage flow through a porous medium is generally

a) Turbulent

b) Supercritical

c) Transitional

d) Laminar

25 / 30

25. Saturated soil is concerned with

a) Two-phase system

b) Three-phase system

c) One-phase system

d) All of the above

26 / 30

26. Permeability of soil varies,

a) Inversely as the square of grain size

b) Inversely as the grain size

c) Directly as of grain size

d) Square of grain size

27 / 30

27. Cohesion of soil may

a) Not be affected due to the moisture content

b) Increases as the moisture content increases

c) Decreases as the moisture content decreases

d) More in well-compacted solids

28 / 30

28. The water content at which the soil changes from a liquid state to a plastic state is known as

a) Plastic limit

b) Liquid limit

c) Shrinkage limit

d) None of the above

29 / 30

29. 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

30 / 30

30. The soil having minimum/least bearing capacity is:

a) Moist clay

b) Sandy soil

c) Rock soil

d) Silt clay

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Soil Mechanics Online Test – Paper 2

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