Soil Mechanics Online Test – Paper 2

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Total Questions: 30
Time Allotted: 30 minutes
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1 / 30

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

a) 1

b) 1.5

c) 2

d) 2.5

2 / 30

2. The minimum depth of the building foundation in:

a) Sandy soil is 80 cm to 100 cm

b) Clay soils is 90 cm to 160 cm

c) Rocky soils is 5 cm to 50 cm

d) All of the above

3 / 30

3. 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

4 / 30

4. 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.

5 / 30

5. Degree of saturation of a soil is generally

a) Above 100%

b) Below zero

c) Between 0% and 100%

d) None of the above

6 / 30

6. 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

7 / 30

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

a) Perpendicularity

b) Parallel

c) Softly

d) With a bang

8 / 30

8. 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

9 / 30

9. The shear strength of a soil is

a) Directly proportional to the cohesion of soil

b) Directly proportional to the angle of friction of the soil

c) Directly proportional to the normal stress

d) All of the above

10 / 30

10. The water content of soils can be accurately determined by

a) Calcium carbide

b) Sand bath

c) Alcohol method

d) Oven drying method

11 / 30

11. The ratio of weight of water to the weight of solids in a given mass of soil is known as

a) Void ratio

b) Porosity

c) Specific gravity

d) Water content

12 / 30

12. As moisture content of soil increases, cohesion of soil

a) Increases

b) Decreases

c) Constant

d) All of the above

13 / 30

13. Which of the following soils has the largest permeability?

a) Sand

b) Gravel

c) Silt

d) Clay

14 / 30

14. The seepage flow through a porous medium is generally

a) Turbulent

b) Supercritical

c) Transitional

d) Laminar

15 / 30

15. Cement stabilizer is suitable for

a) RCC

b) Masonry

c) Soil stabilization

d) All of the above

16 / 30

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

a) Same earth pressure

b) Less earth pressure

c) More earth pressure

d) Terzaghi

17 / 30

17. The percentage of the porosity of loose sand is in the range of

a) 5 to 15%

b) 15 to 30%

c) 30 to 40%

d) 40 to 50%

18 / 30

18. The maximum size of a clay particle is

a) 0.1mm

b) 0.3mm

c) 0.002mm

d) 0.005mm

19 / 30

19. Hydrometer readings are corrected for

a) Temperature correction

b) Meniscus correction

c) Both a) and b) of above

d) None of the above

20 / 30

20. The factor of safety of embankments shall be:

a) At least 1.0

b) At least 1.5

c) At least 2.0

d) At least 2.5

21 / 30

21. 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

22 / 30

22. 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

23 / 30

23. Three-phase system is concerned with

a) Partially saturated soil

b) Saturated soil

c) Dry soil

d) All of the above

24 / 30

24. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

25 / 30

25. 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)

26 / 30

26. The triaxial apparatus is usually used for

a) Unconsolidated-untrained test

b) Consolidated-untrained test

c) Drained test

d) All of the above

27 / 30

27. The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated

a) Sands

b) Clays/cohesive soils

c) Gravels

d) Highly organic soils

28 / 30

28. If the shearing stress is zero on two planes, then the angle between the two planes is

a) 45°

b) 90°

c) 135°

d) 180°

29 / 30

29. Consolidation test of a soil sample is carried out to determine:

a) The void ratio in soil

b) The decrease in the total volume

c) The liquid limit of soil

d) The plastic limit of soil

30 / 30

30. Cohesion is defined as:

a) Attraction of molecules of the same material

b) Attraction of molecules of different materials

c) Both of the above

d) None of the above

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Soil Mechanics Online Test – Paper 2

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