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. Theoretically, the void ratio in soils can have the following values

a) >1

b) <1

c) >0.5

d) All of the above

2 / 30

2. The soil sample contains a volume of void 0.2 and a volume of soil solid is 0.30 then find the void ratio & porosity of soil

a) 0.67, 0.40

b) 2, 0.67

c) 0.67, 0.80

d) 0.80, 0.67

3 / 30

3. 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)

4 / 30

4. 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

5 / 30

5. Which is the correct definition of soil in the geotechnical engineer's point of view?

a) Soil is the top surface of the earth where plants can grow.

b) Soil is the unconsolidated material consisting of particles produced by the disintegration of rock, which may or may not contain organic matter.

c) Soil is the relatively thin surface zone that can contain moisture.

d) None of the above.

6 / 30

6. Overturning moment due to the pressure of the soil is 10 KN-m while the resisting moment is 5 KN-m. Find the factor of safety:

a) 2

b) 1

c) 0.5

d) None of the above

7 / 30

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

a) Porosity

b) Void ratio

c) Specific gravity

d) Water content

8 / 30

8. Stability of slopes can be increased by:

a) Adopting gentle slopes

b) Adopting great heights

c) Storing water on one side

d) Constructing on clay deposits

9 / 30

9. The total stress in a soil is

a) Force per neutral area

b) Force per unit effective area

c) Stress taken by the particles of the soil

d) Stress taken by pure water

10 / 30

10. The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter is known as

a) Shrinkage limit

b) Plastic limit

c) Liquid limit

d) Consistency limit

11 / 30

11. 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

12 / 30

12. The admixture used in soil stabilization is

a) Cement

b) Lime

c) Bitumen

d) Any of the above

13 / 30

13. 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

14 / 30

14. The ratio of volume of air void to the volume of voids is known as

a) Air content

b) Wet porosity

c) Percentage voids

d) Degree of saturation

15 / 30

15. 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

16 / 30

16. 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

17 / 30

17. The shear strength of a soil is proportional

a) Directly to the angle of internal friction

b) Directly to the tangent of the angle of internal friction

c) Inversely to the angle of internal friction

d) None of the above

18 / 30

18. The water content of soils is defined as the ratio of

a) Volume of water to that of voids

b) Weight of water to the dry soil weight

c) Volume of water to the gross volume of soil

d) Weight of water to that of the soil

19 / 30

19. 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

20 / 30

20. Bearing capacity of soil is determined by:

a) Plate load test

b) Standard cone test

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

d) None of the above

21 / 30

21. In hydrometer analysis, the principle used

a) Newton's law

b) Darcy's law

c) Stoke's law

d) Rehbann's law

22 / 30

22. The soil transported by wind and deposited is called:

a) Aeolian soil

b) Marine soil

c) Alluvial soil

d) Lacustrine soil

23 / 30

23. The difference between the undisturbed shear strength and remoulded shear strength is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

24 / 30

24. Hydrometer readings are corrected for

a) Temperature correction

b) Meniscus correction

c) Both a) and b) of above

d) None of the above

25 / 30

25. Soil having more cohesion than sand

a) Silt

b) Gravel

c) Clay

d) None of the above

26 / 30

26. The bearing capacity of a soil depends upon:

a) Size of the particles

b) Shape of the particles

c) Cohesive properties of particles

d) All of the above

27 / 30

27. The well in well foundation:

a) Is normally left empty

b) Filled with earth and consolidated

c) Filled with water

d) Filled with sand and consolidated on

28 / 30

28. Mechanical stabilization is done by

a) Cement

b) Lime

c) Bitumen

d) Proper grading

29 / 30

29. The bearing capacity of soil primarily depends on:

a) Depends on the size of the footing

b) Load intensity

c) Depends on the load

d) Rate of loading

30 / 30

30. 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

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Soil Mechanics Online Test – Paper 2

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