Soil Mechanics Online Test - Paper 2

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Vikash chaudhary

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Total Questions: 30
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1 / 30

1. Honeycombed structure is found in

a) Gravels

b) Coarse sands

c) Fine silt and clays

d) Highly plastic clays

2 / 30

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

a) 0.25

b) 0.50

c) 0.75

d) 1.00

3 / 30

3. Pile foundations are enormously used in:

a) Bridge foundations

b) Machine foundations

c) Tall buildings

d) Towers

4 / 30

4. Uniformity coefficient of a soil is:

a) always less than 1

b) always equal to 1

c) equal to or less than 1

d) equal or greater than 1

5 / 30

5. The bearing capacity of a soil depends upon:

a) Size of the particles

b) Shape of the particles

c) Cohesive properties of particles

d) All of the above

6 / 30

6. The maximum dry density occurs at a particular water content which is known as

a) Optimum moisture content

b) Maximum moisture content

c) Low moisture content

d) Water content

7 / 30

7. Negative skin friction:

a) Increases the load-carrying capacity of the pile

b) Decreases the load-carrying capacity of the pile

c) Neither increases nor decreases the load-carrying capacity of the pile

d) All of the above

8 / 30

8. 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

9 / 30

9. The types of compaction suitable in a congested area for cohesive as well as cohesionless soil are

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

10 / 30

10. Shear strength of a soil is a unique function of

a) Effective stress only

b) Total stress only

c) Both total and effective stress

d) None of the above

11 / 30

11. In hydrometer analysis, the principle used

a) Newton's law

b) Darcy's law

c) Stoke's law

d) Rehbann's law

12 / 30

12. The behavior of silt is normally governed by

a) Mass energy

b) Surface energy

c) Mass energy and surface energy

d) None of the above

13 / 30

13. For testing a saturated clay for shear strength, the test recommended is

a) Direct shear test

b) Triaxial compression test

c) Unconfined compression test

d) All of the above

14 / 30

14. 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

15 / 30

15. Generally, soils are considered as

a) Single-phase system

b) Two-phase system

c) Three-phase system

d) None of the above

16 / 30

16. Sheet pile walls are used as:

a) Retaining walls for waterfront construction

b) Load-bearing pile foundations

c) Seepage preventing devices

d) Uplift preventing devices

17 / 30

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

a) 30cm

b) 45cm

c) 60cm

d) 75cm

18 / 30

18. The shear strength of cohesive soil is equal to

a) C = q/2

b) C = 0.5 q tanΦ

c) C = q

d) C = q tan Φ

19 / 30

19. 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

20 / 30

20. The bearing capacity of a weak soil may be improved by:

a) Increasing the depth of the foundation

b) Compacting the soil by ramming

c) Removing the poor soil and filling the gap with sand, gravel, etc.

d) All of the above

21 / 30

21. Cement stabilizer is suitable for

a) RCC

b) Masonry

c) Soil stabilization

d) All of the above

22 / 30

22. 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

23 / 30

23. 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

24 / 30

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

a) Moist clay

b) Sandy soil

c) Rock soil

d) Silt clay

25 / 30

25. A clay deposit subjected to pressure in the past which is more than the present overburden pressure is known as

a) Normally consolidated soil

b) Overconsolidated soil

c) Underconsolidated soil

d) None of the above.

26 / 30

26. 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)

27 / 30

27. The difference between total pressure and pore water pressure is known as

a) Major principal stress

b) Minor principal stress

c) Effective stress

d) None of the above

28 / 30

28. The coefficient of earth pressure for loose sand having an angle of internal friction of 30° is:

a) 0.5

b) 1/3

c) 3

d) 1

29 / 30

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

a) 1

b) 1.5

c) 2

d) 2.5

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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