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. 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

2 / 30

2. 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

3 / 30

3. Cement stabilizer is suitable for

a) RCC

b) Masonry

c) Soil stabilization

d) All of the above

4 / 30

4. The degree of saturation in soils can be defined as the ratio of

a) Water by weight to the dry soil weight

b) Volume of water to the gross volume of soil

c) Volume of water to volume of voids in soil

d) Weight of the water to weight of the soil

5 / 30

5. The specific gravity of sandy soils/gravel is

a) <1.5

b) <2.0

c) >2.0

d) >2.5

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6. The process of improving the engineering properties of the soil and thus making it more stable is known as

a) Compaction

b) Consolidation

c) Stabilization

d) None of the above

7 / 30

7. Bleeder wells are required to

a) Increase discharge from the main well

b) Store drainage water

c) Collect seepage water in dams

d) Relieve pressure in impervious layers

8 / 30

8. The ratio of volume of air void to the volume of voids is known as

a) Air content

b) Wet porosity

c) Percentage voids

d) Degree of saturation

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9. 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

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10. Soils are basically

a) Organic materials

b) Inorganic materials

c) Mineral materials

d) Organic and inorganic materials

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11. On wetting, cohesive soils

a) Lose permeability

b) Gain shear strength

c) Lose elasticity

d) Decrease their shear strength

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12. 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

13 / 30

13. The critical height in the stability of the soil is the:

a) Maximum height at which the stability of the slope is possible

b) Minimum height at which the stability of the slope is possible

c) Maximum vertical height of the soil in an open excavation

d) None of the above

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14. 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

15 / 30

15. The well in well foundation:

a) Is normally left empty

b) Filled with earth and consolidated

c) Filled with water

d) Filled with sand and consolidated on

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16. Absorbed water in soil is

a) Same as free water

b) The water chemically combined in the crystal structure of the soil material

c) Having free movement through the soil by gravity

d) Water absorbed from the atmosphere by forces of attraction

17 / 30

17. 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

18 / 30

18. 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

19 / 30

19. The difference between plastic limit and shrinkage limit is called

a) Fluidity index

b) Relative consistency

c) Plasticity index

d) Shrinkage index

20 / 30

20. The minimum net pressure intensity causing shear failure of the soil is called:

a) Safe bearing capacity

b) Net ultimate bearing capacity

c) Net bearing capacity

d) Ultimate bearing capacity

21 / 30

21. The most effective method for compacting sand is by using

a) Pneumatic rollers

b) Sheep foot rollers

c) Steel tyred rollers

d) Vibration

22 / 30

22. For normally consolidated clay deposits, the stability analysis of slope by the following method is appropriate:

a) Friction circle method

b) Swedish circular arc method

c) Stices method

d) None of the above

23 / 30

23. 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

24 / 30

24. One of the graphical methods for earth pressure determination is:

a) Newmark's influence chart method

b) Mohr diagram method

c) Culmann's method

d) Taylor's method

25 / 30

25. Particle size range is measured by

a) Effective size

b) Uniformity coefficient

c) Coefficient of curvature

d) None of the above

26 / 30

26. 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

27 / 30

27. The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter is known as

a) Shrinkage limit

b) Plastic limit

c) Liquid limit

d) Consistency limit

28 / 30

28. Plasticity index is obtained as the difference between

a) Liquid limit and shrinkage limit

b) Shrinkage limit and plastic limit

c) Liquid limit and plastic limit

d) None of the above

29 / 30

29. Bearing capacity of soils depends on:

a) Physical characteristics of soil particles

b) Moisture content of soil

c) Both of the above

d) None of the above

30 / 30

30. The ratio of volume of voids to the total volume of the given soil mass is known as

a) Porosity

b) Void ratio

c) Specific gravity

d) Water content

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Soil Mechanics Online Test – Paper 2

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