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. 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

2 / 30

2. Soil transported by water and deposited at the bottom of the lake is known as

a) Alluvial soil

b) Lacustrine soil

c) Loess

d) Dune sand

3 / 30

3. 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

4 / 30

4. 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

5 / 30

5. If the failure of a finite slope occurs through the toe, it is known as:

a) Slope failure

b) Base failure

c) Face failure

d) Toe failure

6 / 30

6. The ratio of plasticity index to clay fraction is known as

a) Activity ratio or number

b) Flow index

c) Liquidity index

d) Toughness index

7 / 30

7. The bearing capacity factors (N_c, N_q,) and (N_r) are functions of:

a) Cohesion only

b) Angle of internal friction

c) Both (a) and (b) of above

d) None of the above

8 / 30

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

a) Increases

b) Decreases

c) Constant

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. The bottom plug in well foundation is used:

a) To seal off the water

b) For stable resting

c) To transfer load from the steining to the soil

d) Create a working place in the well

11 / 30

11. Honeycombed structure is found in

a) Gravels

b) Coarse sands

c) Fine silt and clays

d) Highly plastic clays

12 / 30

12. 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

13 / 30

13. The reduction factor to the bearing capacity of soil due to the water table just below the footing is:

a) 0.25

b) 0.50

c) 0.75

d) 1.00

14 / 30

14. The triaxial apparatus is usually used for

a) Unconsolidated-untrained test

b) Consolidated-untrained test

c) Drained test

d) All of the above

15 / 30

15. The ratio of settlement at any time t, to the final settlement is called

a) Percentage settlement

b) Partial settlement

c) Degree of consolidation

d) Residual consolidation

16 / 30

16. 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

17 / 30

17. Moisture content for the optimum moisture content of silt is

a) 5%

b) 10%

c) 15%

d) 20%

18 / 30

18. 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)

19 / 30

19. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

20 / 30

20. The lateral earth pressure of the soil moves towards the retaining wall indicates

a) Active earth pressure

b) Passive earth pressure

c) Constant

d) All of the above

21 / 30

21. A vertical wall is subjected to a liquid pressure on its one side, the total pressure on the wall acts at a distance of:

a) H/3

b) H/2

c) 2H/3

d) 3H/4

22 / 30

22. 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

23 / 30

23. Units of the coefficient of permeability

a) cm/sec

b) sec/cm

c) cm/sec^2

d) sec^2/cm

24 / 30

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

a) Clayey

b) Silty sand

c) Sandy

d) Sandy gravel

25 / 30

25. The types of compaction suitable for cohesionless soil having large thickness are

a) Roller

b) Rammer

c) Vibrator

d) Vibrofloatation

26 / 30

26. Allowable bearing pressure for a foundation depends on:

a) Allowable settlement only

b) Ultimate bearing capacity of soil only

c) Both allowable settlement & ultimate bearing capacity of soil

d) None of the above

27 / 30

27. Raft foundation is a type of:

a) Deep foundation

b) Shallow foundation

c) Foundation under water

d) None of the above

28 / 30

28. Pick up the correct sequence of geological cycle for the formation of soil

a) Transportation - Upheaval - Deposition - Weathering

b) Transportation - Deposition - Weathering - Upheaval

c) Weathering - Upheaval - Deposition - Transportation

d) Weathering - Transportation - Deposition - Upheaval

29 / 30

29. 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

30 / 30

30. Consolidation theory was enunciated by

a) Rankine

b) Westergaard

c) Skempton

d) Terzaghi

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Soil Mechanics Online Test – Paper 2

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