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 ultimate B.C. of a soil can be defined as:

a) Ultimate load on the bearing area

b) Safe load on the bearing area

c) Load at which the soil fails

d) Load beyond which the soil should not be loaded

2 / 30

2. Plasticity needle/Proctor needle is used to determine

a) Plastic limit of the soil used in compaction

b) Penetration resistance to control field compaction

c) Penetration value of bitumen used in road construction

d) Swelling index of black cotton soil

3 / 30

3. *Earth pressure acting at a height of ..... in case of inclined surcharge is:

a) h/2 from the base of the wall

b) h/3 from the base of the wall

c) h/4 from the base of the wall

d) h/5 from the base of the wall

4 / 30

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

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

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5. Number of blows required to penetrate the sampler & cone for a depth of ...&... is known as penetration number

a) 30cm & 20cm

b) 20cm & 30cm

c) 40cm & 50cm

d) 50cm & 40cm

6 / 30

6. 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

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7. 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

8 / 30

8. The well foundation is normally used under:

a) Industrial buildings

b) Structures on river beds

c) Tall buildings

d) Offshore wells

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9. 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

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10. The admixture used in soil stabilization is

a) Cement

b) Lime

c) Bitumen

d) Any of the above

11 / 30

11. The critical exit gradient of the seepage of water in a soil is

a) (1-e) / (G-1)

b) (G+e) / (1+e)

c) (G-1)/(1+e)

d) None of the above

12 / 30

12. Talus' is the soil transported by

a) Wind

b) Water

c) Glacier

d) Gravitational force

13 / 30

13. Mechanical stabilization is done by

a) Cement

b) Lime

c) Bitumen

d) Proper grading

14 / 30

14. An agent responsible for the transportation of soil is

a) Wind

b) Water

c) Gravity

d) All of the above

15 / 30

15. 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

16 / 30

16. 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

17 / 30

17. 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

18 / 30

18. The ratio of plasticity index to clay fraction is known as

a) Activity ratio or number

b) Flow index

c) Liquidity index

d) Toughness index

19 / 30

19. Chemical weathering occurs because of

a) Oxidation

b) Carbonation

c) Hydration

d) All of the above

20 / 30

20. Flow path/flow channel is

a) The space between two adjacent flow lines

b) Direction of flow

c) The space between two equipotential lines

d) None of the above

21 / 30

21. The load-carrying capacity of the pile is............due to skin friction.

a) Increases

b) Decreases

c) Constant

d) None of the above

22 / 30

22. The angle of internal friction of clay is about

a) 5-20°

b) 24-30°

c) 27-33°

d) 30-35°

23 / 30

23. Pile foundations are normally used in:

a) Soft clayey soil

b) Loose sandy soil

c) Heavy loaded situations

d) When required bearing area is not available

24 / 30

24. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio, respectively, are:

a) 1.0 and 0.0

b) 0.0 and 1.0

c) 0.5 and 1.0

d) 1.0 and 0.5

25 / 30

25. 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

26 / 30

26. A dam is

a) One-dimensional structure

b) Two-dimensional structure

c) Three-dimensional structure

d) None of the above

27 / 30

27. * For a properly designed footing, the bearing stress must be less than the bearing capacity, which is the bearing stress that causes a ......... failure within the foundation soil.

a) Tensile

b) Expected

c) Unexpected

d) Shear

28 / 30

28. Overconsolidation may be due to

a) The weight of the ice sheet or glacier which is melted away

b) The weight of the landslide which is removed

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

d) None of the above

29 / 30

29. If in a partially saturated soil, the degree of saturation is 40%, then the air content of the soil is

a) 40%

b) 50%

c) 60%

d) 70%

30 / 30

30. 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)

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Soil Mechanics Online Test – Paper 2

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