Soil Mechanics Online Test - Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. The slope of the flow curve obtained in the liquid limit test is called

a) Liquidity index

b) Plasticity index

c) Toughness index

d) Flow index

2 / 30

2. In the modified Proctor test, the drop height of the rammer is

a) 30cm

b) 45cm

c) 60cm

d) 75cm

3 / 30

3. The basis for all soil classification systems is

a) Permeability characteristics

b) Specific gravity of solids

c) Grain size and plasticity characteristics

d) None of the above

4 / 30

4. The critical exit gradient of the seepage of water in soils

a) Increases with a decrease in the specific gravity

b) Increases with an increase in the specific gravity

c) Decreases with an increase in the liquid limit

d) None of the above

5 / 30

5. The bearing capacity factors (N_c, N_q,) and (N_r) are functions of:

a) Cohesion only

b) Angle of internal friction

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

d) None of the above

6 / 30

6. The shear strength of a soil is

a) Directly proportional to the cohesion of soil

b) Directly proportional to the angle of friction of the soil

c) Directly proportional to the normal stress

d) All of the above

7 / 30

7. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

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. Angle of Internal friction is minimum for

a) angular grained loose soil

b) angular grained dense soil

c) round drained loose soil

d) clay

10 / 30

10. The safe B.C. of a soil can be defined as:

a) Ultimate load on the bearing area

b) Load intensity beyond which the soil should not be loaded

c) Load at which the soil fails

d) Load beyond which the soil yields

11 / 30

11. The internal molecular attraction of a soil is known as cohesion:

a) Increases as the moisture content decreases

b) Is more in well-compacted clays

c) Depends upon the external applied load

d) Decreases as the moisture content increases

12 / 30

12. Over-consolidated soils caused due to:

a) erosion of overburden

b) melting of ice sheets after glaciations

c) permanent rise of water table

d) all of the above

13 / 30

13. The bearing capacity of soil primarily depends on:

a) Depends on the size of the footing

b) Load intensity

c) Depends on the load

d) Rate of loading

14 / 30

14. Compaction is done to remove... from the soil.

a) Air

b) Water

c) Soil

d) None of the above

15 / 30

15. The seepage force is proportional to

a) Exit gradient

b) Head of water at upstream

c) Head of water at downstream

d) None of the above

16 / 30

16. The length/diameter ratio of cylindrical specimens used in a triaxial test is generally

a) 1

b) 1.5

c) 2

d) 2.5

17 / 30

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

a) 15°

b) 30°

c) 45°

d) 50°

18 / 30

18. 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

19 / 30

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

a) 0.25

b) 0.50

c) 0.75

d) 1.00

20 / 30

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

a) Steep slopes

b) Gentle slopes

c) All inclinations

d) Very steep slopes

21 / 30

21. The degree of saturation in soils can be defined as the ratio of

a) Water by weight to the dry soil weight

b) Volume of water to the gross volume of soil

c) Volume of water to volume of voids in soil

d) Weight of the water to weight of the soil

22 / 30

22. 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

23 / 30

23. The ratio of the unit weight of soil solids to that of water is called:

a) Void ratio

b) Porosity

c) Specific gravity

d) Degree of saturation

24 / 30

24. 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

25 / 30

25. Flow net can be used for the determination of

a) Seepage flow rate

b) Hydrostatic pressure

c) Seepage pressure

d) All of the above

26 / 30

26. Passive earth pressure is defined as

a) Retaining wall tends to move away from the backfill

b) Retaining wall tends to move towards the backfill

c) Retaining wall is in a stationary position

d) All of the above

27 / 30

27. Particle size range is measured by

a) Effective size

b) Uniformity coefficient

c) Coefficient of curvature

d) None of the above

28 / 30

28. 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

29 / 30

29. 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

30 / 30

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

a) Calcium carbide

b) Sand bath

c) Alcohol method

d) Oven drying method

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Soil Mechanics Online Test – Paper 2

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