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. 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

2 / 30

2. If the water content of a fully saturated soil mass is 100%, then the voids will be

a) Less than the specific gravity of soil

b) Equal to the specific gravity of soil

c) Greater than the specific gravity of soil

d) Independent of the specific gravity of soil

3 / 30

3. 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

4 / 30

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

a) Increases

b) Decreases

c) Constant

d) All of the above

5 / 30

5. The position of the backfill lies above a horizontal plane at the elevation of the top of the structure is known as:

a) Surcharge

b) Surcharge angle

c) Extra load

d) Failure load

6 / 30

6. Base failure refers to a failure surface that:

a) Is above the toe of the slope

b) Includes the toe of the slope

c) Is below the toe of the slope

d) None of the above

7 / 30

7. The percentage voids (n) has a value

a) 0 < n < 100

b) Sr ≤ 0

c) n > 0

d) n ≤ 0

8 / 30

8. In cohesive soils, the depth of the vertical cut up to which no lateral support is required is given by:

a) 2c/γ

b) 4c/γ

c) 2γ/c

d) 4γ/c

9 / 30

9. A soil sample contains a degree of saturation of 30%, find the percentage of air voids

a) 70%

b) 30%

c) 60%

d) 50%

10 / 30

10. 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

11 / 30

11. Cement stabilizer is suitable for

a) RCC

b) Masonry

c) Soil stabilization

d) All of the above

12 / 30

12. The internal molecular attraction of a soil is known as cohesion:

a) Increases as the moisture content decreases

b) Is more in well-compacted clays

c) Depends upon the external applied load

d) Decreases as the moisture content increases

13 / 30

13. The seepage force in the soil is

a) Parallel to equipotential line

b) Perpendicular to equipotential line

c) Perpendicular to flow line

d) None of the above

14 / 30

14. The property of the soil which allows water to flow through the soil is known as

a) Capillary

b) Permeability

c) Fluidity

d) Viscosity

15 / 30

15. Sheet piles are held in position by:

a) Self-weight of the sheet pile

b) Tie rods which are anchored

c) Embedding the bottom of the sheet pile

d) Adjusting water level on one side

16 / 30

16. A grillage foundation is used under:

a) Heavy load-bearing wall

b) Set of columns

c) Combined footing

d) Heavy loaded situations

17 / 30

17. The active earth pressure of a soil can be defined as lateral pressure exerted by the soil when

a) The retaining wall tends to move away from the backfill

b) The wall moves into the soil

c) The wall moves relative to the backfill

d) Any of the above

18 / 30

18. Silts have the following property

a) Plasticity

b) Limited plasticity

c) Limited or no plasticity

d) Elasticity

19 / 30

19. The top flow line in the case of seepage flow through an earthen dam has the shape of

a) Parabola

b) Ellipse

c) Hyperbola

d) None of the above

20 / 30

20. 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

21 / 30

21. When a static load is applied, the consolidation is fast in the case of

a) Clays

b) Silty clays

c) Sandy silts

d) Sands

22 / 30

22. 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

23 / 30

23. Honeycombed structure is found in

a) Gravels

b) Coarse sands

c) Fine silt and clays

d) Highly plastic clays

24 / 30

24. The bearing capacity of soil depends on:

a) Grain size of the soil

b) Load intensity

c) On the load

d) Rate of loading

25 / 30

25. Pile foundations are normally used in:

a) Soft clayey soil

b) Loose sandy soil

c) Heavy loaded situations

d) When required bearing area is not available

26 / 30

26. The most suitable method for increasing the bearing capacity of black cotton soil is:

a) Watering the surface of the soil

b) Compacting the soil

c) Replacement of black cotton soil by sand

d) Increasing the depth

27 / 30

27. 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

28 / 30

28. The angle of internal friction depends upon

a) Particle shape and roughness

b) Normal direct pressure

c) The amount of interlocking

d) All of the above

29 / 30

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

a) Cohesive soil

b) Cohesionless soil

c) Marine soil

d) Expansive soil

30 / 30

30. 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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Soil Mechanics Online Test – Paper 2

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