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. Soils are basically

a) Organic materials

b) Inorganic materials

c) Mineral materials

d) Organic and inorganic materials

2 / 30

2. 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

3 / 30

3. The shearing strength of a cohesionless soil depends upon:

a) Dry density

b) Rate of loading

c) Confining pressure

d) Nature of loading

4 / 30

4. The difference between the undisturbed shear strength and remoulded shear strength is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

5 / 30

5. The active earth pressure of a soil can be defined as lateral pressure exerted by the soil when

a) The retaining wall tends to move away from the backfill

b) The wall moves into the soil

c) The wall moves relative to the backfill

d) Any of the above

6 / 30

6. The value of net allowable bearing pressure is:

a) Net safe bearing capacity

b) Net safe settlement pressure

c) Minimum of net safe bearing capacity and net safe settlement pressure

d) Gross safe bearing capacity

7 / 30

7. Active earth pressure is

a) Always less than passive earth pressure

b) Always greater than passive earth pressure

c) Sometimes greater than passive earth pressure

d) Equal to passive earth pressure

8 / 30

8. 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

9 / 30

9. Most of the shear tests are done in equipment which is:

a) stress controlled

b) strain controlled

c) drainage controlled

d) volume controlled

10 / 30

10. Specific gravity of soil is

a) Same for clays and sands

b) Determined by hydrometer

c) Less than 2.0 for most soils

d) More than 2.5 for most soils

11 / 30

11. Saturated soil is concerned with

a) Two-phase system

b) Three-phase system

c) One-phase system

d) All of the above

12 / 30

12. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

13 / 30

13. 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

14 / 30

14. The specific gravity of sandy soils/gravel is

a) <1.5

b) <2.0

c) >2.0

d) >2.5

15 / 30

15. The wall constructed to resist horizontal pressure is:

a) Main wall

b) Partition wall

c) Retaining wall

d) All of the above

16 / 30

16. 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

17 / 30

17. 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

18 / 30

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

a) 1.0 and 0

b) 0 and 1

c) 0.5 and 1

d) 1 and 0.5

19 / 30

19. The change of moisture content of soils changes

a) Angle of repose

b) Cohesive strength

c) Amount of compaction required

d) Any of the above

20 / 30

20. 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

21 / 30

21. Compared to dry backfill, submerged backfill will exert:

a) Same earth pressure

b) Less earth pressure

c) More earth pressure

d) Terzaghi

22 / 30

22. 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

23 / 30

23. Which sequence is correct regarding different coefficients of friction in increasing order?

a) Kp-Ka-Ko

b) Ka-Ko-Kp

c) Ko-Kp-Ka

d) Kp-Ko-Ka

24 / 30

24. 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

25 / 30

25. Generally, soils are considered as

a) Single-phase system

b) Two-phase system

c) Three-phase system

d) None of the above

26 / 30

26. 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

27 / 30

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

a) 1

b) 1.5

c) 2

d) 2.5

28 / 30

28. Cohesionless soil is

a) Sand

b) Silt

c) Clay

d) Clay and silt

29 / 30

29. The types of soil, which contain particles of almost the same size

a) Uniform soil

b) Uniformly graded soil

c) Skip-graded soil

d) Gap-graded soil

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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