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. Who coined the term Soil Mechanics?

a) Terzaghi

b) Cassagrande

c) Newmark

d) Rankine

2 / 30

2. 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

3 / 30

3. 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

4 / 30

4. The most effective method for compacting sand is by using

a) Pneumatic rollers

b) Sheep foot rollers

c) Steel tyred rollers

d) Vibration

5 / 30

5. 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

6 / 30

6. Three phase diagram of soil represents

a) Solids, pebbles, and clay

b) Dust, fine sand, and coarse sand

c) Solids, water, and air

d) Solid volume and mass

7 / 30

7. 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

8 / 30

8. 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°

9 / 30

9. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

10 / 30

10. Void ratio, e, of a soil can

a) Never be greater than one

b) Be equal to zero

c) Be greater than zero

d) Be between 0 and 1

11 / 30

11. 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

12 / 30

12. Terzaghi's theory of one-dimensional consolidation assumes:

a) Soil is homogeneous and fully saturated

b) Water and soil particles are incompressible

c) Deformation of the soil is entirely due to a change in volume

d) All of the above

13 / 30

13. The tendency of dense sand to expand on the application of shearing load is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

14 / 30

14. 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

15 / 30

15. The density of soil can be increased by

a) By reducing the air voids

b) By elastic compression of soil grains

c) By expelling water from soil pores

d) All of the above

16 / 30

16. The finest size of soil particle is

a) Clay

b) Silt

c) Sand

d) Cobble

17 / 30

17. If the coefficient of passive earth pressure k is 1/3 then the coefficient of active earth pressure is:

a) 1/3

b) 1

c) 3

d) 3/2

18 / 30

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

a) Onion

b) Potato

c) Pumpkin

d) Turnip

19 / 30

19. 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

20 / 30

20. The most suitable method for increasing the bearing capacity of black cotton soil is:

a) Watering the surface of the soil

b) Compacting the soil

c) Replacement of black cotton soil by sand

d) Increasing the depth

21 / 30

21. The rate of consolidation

a) Increases with a decrease in temperature

b) Increases with an increase in temperature

c) Independent of temperature

d) None of the above

22 / 30

22. Soil in which some of the intermediate size particles are missing is known as

a) Poorly graded soil

b) Non-uniform soil

c) Ill-proportioned soil

d) Skip-graded soil

23 / 30

23. 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

24 / 30

24. 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)

25 / 30

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

a) 15°

b) 30°

c) 45°

d) 50°

26 / 30

26. If the coefficient of permeability of a soil is 0.08 cm/sec, that soil will be

a) Clay

b) Silt

c) Sand

d) Gravel

27 / 30

27. Bleeder wells are required to

a) Increase discharge from the main well

b) Store drainage water

c) Collect seepage water in dams

d) Relieve pressure in impervious layers

28 / 30

28. 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

29 / 30

29. 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

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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