Soil Mechanics Online Test - Paper 2

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Vikash chaudhary

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

1. In a flow net, which of the following statements is true?

a) Flow lines and equipotential lines intersect at oblique angles

b) Flow lines and equipotential lines intersect orthogonally

c) Flow rate through each flow channel is different

d) The head along each flow line is constant

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2. 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

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3. 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

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4. Cohesive soils are generally/normally

a) Plastic and also compressible

b) Elastic and also compressible

c) Plastic but incompressible

d) None of the above

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5. To what category do the gravel and sand belong?

a) Cohesive soil

b) Cohesionless soil

c) Marine soil

d) Expansive soil

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6. Westergaard's theory is more appropriate for

a) layered soils

b) homogeneous deposits

c) anisotropic soils

d) normally consolidated homogeneous soils

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7. According to Terzaghi's theory, the ultimate B.C., at ground surface for a purely cohesive soil and for a smooth base of a strip footing is:

a) 2.57c

b) 5.14c

c) 10.28c

d) 12.0c

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8. Who coined the term Soil Mechanics?

a) Terzaghi

b) Cassagrande

c) Newmark

d) Rankine

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9. 'Drift' is the material picked up, mixed, disintegrated, transported, and repositioned by

a) Wind

b) Gravitational force

c) Glacier water

d) All of the above

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10. The void ratio of soil is

a) The ratio of voids to solids in volume

b) The ratio of voids to gross volume

c) The ratio of solids to voids in volume

d) The ratio of solid volume to gross volume

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11. The curve A, B, and C shown in fig below are respectively the stress-strain curves for stress of

a) Dense sand, clay, and loose sand

b) Dense sand, loose sand, and clay

c) Loose sand, dense sand, and clay

d) Clay, loose sand, and dense sand

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12. The assumption of Rankine's theory of earth pressure is:

a) The soil is semi-finite, homogeneous, dry, and cohesionless

b) Ground surface is a plane which may be inclined or horizontal

c) Back of the wall is vertical and smooth

d) All of the above

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13. Terzaghi's theory of one-dimensional consolidation assumes:

a) Soil is homogeneous and fully saturated

b) Water and soil particles are incompressible

c) Deformation of the soil is entirely due to a change in volume

d) All of the above

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14. The angle of internal friction for cohesive soils is equal to:

a) Zero

b) 30°

c) 45°

d) 15°

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15. 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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16. The ratio of the difference between the void ratio of the soil in its loosest and its natural state and fully dense state is termed as

a) Degree of density

b) Density index

c) Relative density

d) Any of the above

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17. 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

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18. The shape & structure of an isobar is like a/an

a) Onion

b) Potato

c) Pumpkin

d) Turnip

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19. * Angle of internal friction is minimum for:

a) Angular grained loose soil

b) Angular grained dense soil

c) Round grained loose soil

d) Clay

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20. The angle between the horizontal and the slope of a heap produced by pouring clean dry sand from a small height is known as:

a) the angle of equilibrium

b) the angle of bulk

c) the angle of rest

d) the angle of repose

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21. 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

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22. 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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23. Black cotton soil is not suitable for foundations because of its:

a) Black color

b) Low bearing capacity

c) Cohesive particles

d) Swelling and shrinkage nature

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24. The maximum dry density occurs at a particular water content which is known as

a) Optimum moisture content

b) Maximum moisture content

c) Low moisture content

d) Water content

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25. Which of the following statements is true?

a) In a dry soil, all the voids are filled with air.

b) In a saturated soil, all the voids are filled with water.

c) In a partly saturated soil, the voids are occupied by both air and water.

d) All of the above

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26. * The shear resistance between particles is provided by:

a) Terzaghi's

b) Pairwise

c) Adhesive

d) Broken

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

a) Air content

b) Percentage of air voids

c) Percentage voids

d) Degree of saturation

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

a) Sand

b) Gravel

c) Silt

d) Clay

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29. Soils are basically

a) Organic materials

b) Inorganic materials

c) Mineral materials

d) Organic and inorganic materials

30 / 30

30. The seepage force is proportional to

a) Head loss

b) Flow net

c) Head at upstream

d) Equipotential gradient

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Soil Mechanics Online Test – Paper 2

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