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. *Earth pressure acting at a height of ..... in case of inclined surcharge is:

a) h/2 from the base of the wall

b) h/3 from the base of the wall

c) h/4 from the base of the wall

d) h/5 from the base of the wall

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2. The wall constructed to resist horizontal pressure is:

a) Main wall

b) Partition wall

c) Retaining wall

d) All of the above

3 / 30

3. The basis for all soil classification systems is

a) Permeability characteristics

b) Specific gravity of solids

c) Grain size and plasticity characteristics

d) None of the above

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4. 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

5 / 30

5. Falling head permeability test is preferable when the soil sample is

a) Clayey

b) Silty sand

c) Sandy

d) Sandy gravel

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

a) Pneumatic rollers

b) Sheep foot rollers

c) Steel tyred rollers

d) Vibration

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7. 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

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8. Flow net can be used for the determination of

a) Seepage flow rate

b) Hydrostatic pressure

c) Seepage pressure

d) All of the above

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9. The angle between the maximum shear stress plane and the horizontal plane is equal to

a) 15°

b) 30°

c) 45°

d) 50°

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

a) stress controlled

b) strain controlled

c) drainage controlled

d) volume controlled

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11. 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

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12. 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

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13. The seepage flow through a porous medium is generally

a) Turbulent

b) Supercritical

c) Transitional

d) Laminar

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14. 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

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15. Compaction of soil is aimed at

a) Decreasing dry density

b) Increasing porosity

c) Decreasing void ratio

d) Decreasing shear strength

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16. 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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17. 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

18 / 30

18. 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

19 / 30

19. Mechanical stabilization is done by

a) Cement

b) Lime

c) Bitumen

d) Proper grading

20 / 30

20. 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

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21. 'Loess' is silty clay formed by the action of

a) Wind

b) Water

c) Glacier

d) Gravitational force

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22. 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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23. A plane inclined at an angle to the horizontal at which the soil is expected to stay in the absence of any lateral support is known as:

a) Natural slope line

b) The stable line

c) Repose line

d) All of the above

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24. The strength of a soil is generally identified by

a) Direct tensile stress

b) Net stress

c) Ultimate shear stress

d) Direct ultimate compressive stress

25 / 30

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

a) Same earth pressure

b) Less earth pressure

c) More earth pressure

d) Terzaghi

26 / 30

26. Cohesionless soils are formed due to

a) Oxidation of rocks

b) Leaching action of water on rocks

c) Blowing of hot and cold wind

d) Physical disintegration of rock

27 / 30

27. 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

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28. Contribution due to skin friction is maximum in:

a) Sands

b) Soft clays

c) Piles resting on rock

d) None of the above

29 / 30

29. A decrease in water content results in a reduction of the volume of a soil in

a) Liquid state

b) Plastic state

c) Semi-liquid state

d) All of the above

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30. 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.

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Soil Mechanics Online Test – Paper 2

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