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 percentage of the porosity of loose sand is in the range of

a) 5 to 15%

b) 15 to 30%

c) 30 to 40%

d) 40 to 50%

2 / 30

2. The tendency of dense sand to expand on the application of shearing load is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

3 / 30

3. Negative skin friction:

a) Increases the load-carrying capacity of the pile

b) Decreases the load-carrying capacity of the pile

c) Neither increases nor decreases the load-carrying capacity of the pile

d) All of the above

4 / 30

4. The soil having minimum/least bearing capacity is:

a) Moist clay

b) Sandy soil

c) Rock soil

d) Silt clay

5 / 30

5. * A 'shear stress' is a stress which is applied.......to a face of material.

a) Perpendicularity

b) Parallel

c) Softly

d) With a bang

6 / 30

6. If you are asked to classify soils into 3 categories, which of the following categorizations would you prefer?

a) Clayey, Silty, and Sandy

b) Clayey, Sandy, and Granular

c) Clayey, Silty, and Loamy

d) Coarse-grained, fine-grained, and highly organic

7 / 30

7. The ratio of weight of water to the weight of solids in a given mass of soil is known as

a) Void ratio

b) Porosity

c) Specific gravity

d) Water content

8 / 30

8. Hydrometer readings are corrected for

a) Temperature correction

b) Meniscus correction

c) Both a) and b) of above

d) None of the above

9 / 30

9. 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

10 / 30

10. A grillage foundation is used under:

a) Heavy load-bearing wall

b) Set of columns

c) Combined footing

d) Heavy loaded situations

11 / 30

11. The critical exit gradient of the seepage of water in soils

a) Increases with a decrease in the specific gravity

b) Increases with an increase in the specific gravity

c) Decreases with an increase in the liquid limit

d) None of the above

12 / 30

12. Stability analysis shall be made considering:

a) Total stresses

b) Normal stresses

c) Effective stresses

d) Shear stresses

13 / 30

13. For testing a saturated clay for shear strength, the test recommended is

a) Direct shear test

b) Triaxial compression test

c) Unconfined compression test

d) All of the above

14 / 30

14. Toe failure is most likely in the case of:

a) Steep slopes

b) Gentle slopes

c) All inclinations

d) Very steep slopes

15 / 30

15. Which method is quickest to find the water content of soils?

a) Oven dry method

b) Alcohol method

c) Calcium carbide method

d) Sand bath method

16 / 30

16. 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

17 / 30

17. 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

18 / 30

18. Moisture content of saturated soil equals:

a) 0%

b) 100%

c) 50%

d) 90%

19 / 30

19. 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

20 / 30

20. The phreatic line is

a) The u/s face of the earth dam

b) The d/s face of the earth dam

c) The top flow line

d) None of the above

21 / 30

21. 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

22 / 30

22. Three-phase system is concerned with

a) Partially saturated soil

b) Saturated soil

c) Dry soil

d) All of the above

23 / 30

23. Quick sand is a

a) Type of sand

b) Condition in which a cohesionless soil loses its strength because of upward flow of water

c) Moist sand containing small particles

d) Condition which occurs in coarse sand

24 / 30

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

a) Capillary

b) Permeability

c) Fluidity

d) Viscosity

25 / 30

25. The specific gravity of sandy soils/gravel is

a) <1.5

b) <2.0

c) >2.0

d) >2.5

26 / 30

26. 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

27 / 30

27. 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

28 / 30

28. The thickness of adsorbed layers of soil is measured in

a) Angstroms

b) cm

c) mm

d) Micron

29 / 30

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

a) Onion

b) Potato

c) Pumpkin

d) Turnip

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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