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. An isobar is a line which connects the points of equal stress

a) Below GL

b) Above GL

c) At GL

d) Any of the above

2 / 30

2. 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

3 / 30

3. Cement stabilizer is suitable for

a) RCC

b) Masonry

c) Soil stabilization

d) All of the above

4 / 30

4. As sheet pile walls are embedded in soil, for the design of:

a) Active earth pressure only

b) Earth pressure at rest only

c) Passive earth pressure only

d) Active and passive earth pressure both considered

5 / 30

5. A foundation may be classified as shallow if:

a) Depth is less than 6 m

b) Depth is less than its width

c) Depth is less than 1 m

d) None of the above

6 / 30

6. 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

7 / 30

7. The law which states that the velocity of flow through a porous medium is directly proportional to the hydraulic gradient is

a) Newton's law

b) Stokes's law

c) Darcy's law

d) Reynolds's law

8 / 30

8. 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

9 / 30

9. Which method is quickest to find the water content of soils?

a) Oven dry method

b) Alcohol method

c) Calcium carbide method

d) Sand bath method

10 / 30

10. Raising of water table in shallow foundations, near foundation level:

a) Reduces bearing capacity

b) Increases bearing capacity

c) Does not affect bearing capacity

d) Increases and then decreases bearing capacity

11 / 30

11. 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.

12 / 30

12. The well foundation is normally used under:

a) Industrial buildings

b) Structures on river beds

c) Tall buildings

d) Offshore wells

13 / 30

13. The soil transported by wind and deposited is called:

a) Aeolian soil

b) Marine soil

c) Alluvial soil

d) Lacustrine soil

14 / 30

14. 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

15 / 30

15. Water content is defined as the ratio of

a) Weight of water to weight of solids

b) Weight of solids to weight of water

c) Total amount of water in soil

d) All of the above

16 / 30

16. 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

17 / 30

17. 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

18 / 30

18. The difference of the range of water between liquid limit and plastic limit is called

a) Fluidity index

b) Relative consistency

c) Shrinkage index

d) Plasticity index

19 / 30

19. Stability analysis shall be made considering:

a) Total stresses

b) Normal stresses

c) Effective stresses

d) Shear stresses

20 / 30

20. 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

21 / 30

21. The types of compaction suitable for cohesionless soil having large thickness are

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

22 / 30

22. In the case of a backfill with a sloping surface, the total active pressure on the wall of height H acts at:

a) H/3 above the base parallel to the base

b) H/3 above the base parallel to the sloping surface

c) H/2 above the base parallel to the base

d) H/2 above the base parallel to the sloping surface

23 / 30

23. The permeability of a soil deposit in situ can be best obtained by

a) Falling head permeameter

b) Constant head permeameter

c) Pumping test

d) None of the above

24 / 30

24. 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

25 / 30

25. The angle of internal friction of clay is about

a) 5-20°

b) 24-30°

c) 27-33°

d) 30-35°

26 / 30

26. 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

27 / 30

27. The void ratio of soil is

a) The ratio of voids to solids in volume

b) The ratio of voids to gross volume

c) The ratio of solids to voids in volume

d) The ratio of solid volume to gross volume

28 / 30

28. The lateral pressure exerted by a uniform surcharge of intensity q per unit area is:

a) q times the lateral pressure within the surface

b) q/γ, where γ is the density of backfill

c) 1/q times the lateral pressure within the surface

d) None of the above

29 / 30

29. The seepage force in the soil is

a) Parallel to equipotential line

b) Perpendicular to equipotential line

c) Perpendicular to flow line

d) None of the above

30 / 30

30. The neutral stress in a soil mass is

a) Force per neutral area

b) Force per unit effective area of the soil

c) Stress shared by the particles of the soil

d) Stress shared by the pore water

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Soil Mechanics Online Test – Paper 2

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