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. Mechanical stabilization is done by

a) Cement

b) Lime

c) Bitumen

d) Proper grading

2 / 30

2. A pycnometer is used to determine

a) Specific gravity and dry density

b) Water content and void ratio

c) Water content and specific gravity

d) Dry density and void ratio

3 / 30

3. Which of the following is responsible for the shear resistance in soils?

a) Intergranular friction

b) Cohesion and adhesion between the soil particles

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

d) None of the above

4 / 30

4. The principal stress is maximum on

a) Minor principal plane

b) Intermediate principal plane

c) Major principal plane

d) None of these

5 / 30

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

a) Aeolian soil

b) Marine soil

c) Alluvial soil

d) Lacustrine soil

6 / 30

6. The seepage force is proportional to

a) Head loss

b) Flow net

c) Head at upstream

d) Equipotential gradient

7 / 30

7. 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

8 / 30

8. 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.

9 / 30

9. 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

10 / 30

10. Who coined the term Soil Mechanics?

a) Terzaghi

b) Cassagrande

c) Newmark

d) Rankine

11 / 30

11. In Rankine's earth pressure theory, the following assumption is made:

a) Wall face is rough and vertical

b) Backfill is cohesive soil

c) Wall face is smooth and vertical

d) Elastic equilibrium is satisfied

12 / 30

12. 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

13 / 30

13. 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

14 / 30

14. Flow net can be used for the determination of

a) Seepage flow rate

b) Hydrostatic pressure

c) Seepage pressure

d) All of the above

15 / 30

15. 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

16 / 30

16. 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

17 / 30

17. 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

18 / 30

18. The bearing capacity of soil depends upon:

a) Shape and size of the particles

b) Cohesive properties of particles

c) Internal frictional resistance of particles

d) All of the above

19 / 30

19. * A 'shear stress' is a stress which is applied.......to a face of material.

a) Perpendicularity

b) Parallel

c) Softly

d) With a bang

20 / 30

20. The specific gravity of sandy soils/gravel is

a) <1.5

b) <2.0

c) >2.0

d) >2.5

21 / 30

21. The dry density of soil can be defined as

a) Weight of solids to the total volume of the soil

b) Weight of the soil to the volume of the soil

c) Unit weight of the soil to the unit weight of water

d) None of the above

22 / 30

22. Soil which contains particles of different sizes in good proportion is called

a) Uniform soil

b) Well-graded soil

c) Consistent soil

d) None of the above

23 / 30

23. 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

24 / 30

24. In the case of retaining walls, surcharge is:

a) Excess moisture in wall

b) Extra load on the wall

c) Additional load carrying capacity of wall

d) Extra load on the horizontal backfill

25 / 30

25. 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

26 / 30

26. Angle of internal friction of silty sand

a) 5-20°

b) 24-30°

c) 27-33°

d) 30-35°

27 / 30

27. If s is the focal length of Kozeny's parabola and k is the coefficient of permeability, the seepage flow rate per unit length of the dam is given as

a) q = k.s

b) q = s/k

c) q = k√v

d) q = k/s

28 / 30

28. The maximum water content at which a reduction in water content does not cause a decrease in the volume of the soil mass is known as

a) Liquid limit

b) Plastic limit

c) Shrinkage limit

d) Ductile limit

29 / 30

29. In a sand stratum of 1.5m thickness, specific gravity 2.67, and voids ratio 0.67, the head required for the quick condition is equal to

a) 2.5m

b) 2.0m

c) 1.5m

d) 3.0m

30 / 30

30. Which of the following soils will have the least value of the safe load?

a) Sandstone

b) Limestone

c) Moorum

d) Soft chalk

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Soil Mechanics Online Test – Paper 2

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