Soil Mechanics Online Test – Paper 2

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

1. The quantity of water seeping through a soil is

a) Proportional to the head of water downstream

b) Proportional to the head of water upstream

c) Proportional to the total head loss

d) None of the above

2 / 30

2. The permissible settlement in the case of an isolated foundation on clayey soils is:

a) 25 mm

b) 45 mm

c) 65 mm

d) 85 mm

3 / 30

3. Which of the following is not the purpose of a foundation?

a) To distribute the weight of the structure

b) To load the substratum evenly

c) To provide a level surface for building construction

d) To increase the safe bearing capacity of the soil

4 / 30

4. Stability analysis shall be made considering:

a) Total stresses

b) Normal stresses

c) Effective stresses

d) Shear stresses

5 / 30

5. 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

6 / 30

6. An agent responsible for the transportation of soil is

a) Wind

b) Water

c) Gravity

d) All of the above

7 / 30

7. Overturning moment due to the pressure of the soil is 10 KN-m while the resisting moment is 5 KN-m. Find the factor of safety:

a) 2

b) 1

c) 0.5

d) None of the above

8 / 30

8. Distribution of earth pressure with depth is:

a) Parabolic

b) Hydrostatic

c) Non-linear but increasing

d) Volume controlled

9 / 30

9. Specific gravity of solid particles is determined in a laboratory with:

a) Shrinkage Limit Method

b) Gas Jar Method

c) Density Bottle Method

d) All of the above

10 / 30

10. 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

11 / 30

11. The phreatic line is

a) The u/s face of the earth dam

b) The d/s face of the earth dam

c) The top flow line

d) None of the above

12 / 30

12. Westergaard's theory is more appropriate for

a) layered soils

b) homogeneous deposits

c) anisotropic soils

d) normally consolidated homogeneous soils

13 / 30

13. 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

14 / 30

14. A fully saturated soil is called

a) One phase system

b) Two phase system with soil and air

c) Two phase system with soil and water

d) Three phase system

15 / 30

15. The minimum number of piles needed to support a column is:

a) 1

b) 2

c) 3

d) 4

16 / 30

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

a) Pneumatic rollers

b) Sheep foot rollers

c) Steel tyred rollers

d) Vibration

17 / 30

17. The force exerted by flowing water on the sediment particles to cause their motion is called:

a) Eddy force

b) Buoyant force

c) Tractive force

d) Kinematic force

18 / 30

18. Consolidation theory was enunciated by

a) Rankine

b) Westergaard

c) Skempton

d) Terzaghi

19 / 30

19. The shear strength of a soil is proportional

a) Directly to the angle of internal friction

b) Directly to the tangent of the angle of internal friction

c) Inversely to the angle of internal friction

d) None of the above

20 / 30

20. 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

21 / 30

21. If the resultant force at the bottom of the retaining wall lies outside the middle third, the failure will be due to:

a) Crushing

b) Sliding

c) Upthrust

d) Overturing

22 / 30

22. If the soil stays at a place above the parent rock where it is produced, then it is called

a) Stationary soil

b) Static soil

c) Residual soil

d) Immobile soil

23 / 30

23. Core-cutter method is used for

a) Determining the density of soil

b) Obtaining samples for direct shear test

c) Determining the bearing capacity of soil

d) Compacting soil

24 / 30

24. The maximum differential settlement in the case of a foundation on clayey soils is:

a) 10 mm

b) 20 mm

c) 30 mm

d) 40 mm

25 / 30

25. 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

26 / 30

26. A soil sample contains a degree of saturation of 30%, find the percentage of air voids

a) 70%

b) 30%

c) 60%

d) 50%

27 / 30

27. The critical exit gradient may occur when

a) Flow is in an upward direction

b) Seepage pressure is in an upward direction

c) Effective pressure is zero

d) All of the above

28 / 30

28. The rise of the water table below the foundation influences the bearing capacity of soil mainly by reducing:

a) Effective angle of shearing resistance

b) Cohesion and effective unit weight of soil

c) Effective unit weight of soil and effective angle of shearing resistance

d) Cohesion and effective angle of shearing resistance

29 / 30

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

a) Calcium carbide

b) Sand bath

c) Alcohol method

d) Oven drying method

30 / 30

30. * The shear resistance between particles is provided by:

a) Terzaghi's

b) Pairwise

c) Adhesive

d) Broken

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