Soil Mechanics MCQs For Civil Engineers

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1. The permissible settlement in the case of an isolated foundation on clayey soils is:

ⓐ. 25 mm

ⓑ. 45 mm

ⓒ. 65 mm

ⓓ. 85 mm

2. The maximum differential settlement in the case of a foundation on clayey soils is:

ⓐ. 10 mm

ⓑ. 20 mm

ⓒ. 30 mm

ⓓ. 40 mm

3. For normally consolidated clay deposits, the stability analysis of slope by the following method is appropriate:

ⓐ. Friction circle method

ⓑ. Swedish circular arc method

ⓒ. Stices method

ⓓ. None of the above

4. Base failure refers to a failure surface that:

ⓐ. Is above the toe of the slope

ⓑ. Includes the toe of the slope

ⓒ. Is below the toe of the slope

ⓓ. None of the above

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

ⓐ. Steep slopes

ⓑ. Gentle slopes

ⓒ. All inclinations

ⓓ. Very steep slopes

6. The structure that derives its stability due to self-weight is:

ⓐ. Sheet pile wall

ⓑ. Bulkhead

ⓒ. Cantilever retaining wall

ⓓ. Masonry retaining wall

7. Stability of slopes can be increased by:

ⓐ. Adopting gentle slopes

ⓑ. Adopting great heights

ⓒ. Storing water on one side

ⓓ. Constructing on clay deposits

8. 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:

ⓐ. Natural slope line

ⓑ. The stable line

ⓒ. Repose line

ⓓ. All of the above

9. The critical height in the stability of the soil is the:

ⓐ. Maximum height at which the stability of the slope is possible

ⓑ. Minimum height at which the stability of the slope is possible

ⓒ. Maximum vertical height of the soil in an open excavation

ⓓ. None of the above

10. Stability analysis shall be made considering:

ⓐ. Total stresses

ⓑ. Normal stresses

ⓒ. Effective stresses

ⓓ. Shear stresses

11. Berms are used to:

ⓐ. Increase the weight of the dam

ⓑ. Reduce seepage losses

ⓒ. Increase shear strength

ⓓ. Increase factor of safety

12. The factor of safety of slopes is defined as:

ⓐ. FS= Total stress / Effective stress

ⓑ. FS= Shear strength / Shear stress

ⓒ. FS= Overturning moment / Resisting moment

ⓓ. FS= Shear stress / Normal stress

13. The factor of safety of embankments shall be:

ⓐ. At least 1.0

ⓑ. At least 1.5

ⓒ. At least 2.0

ⓓ. At least 2.5

14. 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:

ⓐ. 2

ⓑ. 1

ⓒ. 0.5

ⓓ. None of the above

15. The assumption of Coulomb’s theory is:

ⓐ. Backfill is dry, homogeneous, isotropic, and cohesionless

ⓑ. Rupture plane is linear and passes through the toe of the wall

ⓒ. Sliding wedge acts as a rigid body, and the value of earth pressure is obtained by considering the equilibrium of the wedge

ⓓ. All of the above

16. A wall constructed to retain the earth from slippage on the hillside of the roadway is called:

ⓐ. Breast wall

ⓑ. Retaining wall

ⓒ. Parapet wall

ⓓ. Wing wall

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

ⓐ. H/3

ⓑ. H/2

ⓒ. 2H/3

ⓓ. 3H/4

18. Which of the following is not the purpose of a foundation?

ⓐ. To distribute the weight of the structure

ⓑ. To load the substratum evenly

ⓒ. To provide a level surface for building construction

ⓓ. To increase the safe bearing capacity of the soil

19. Moisture content of saturated soil equals:

ⓐ. 0%

ⓑ. 100%

ⓒ. 50%

ⓓ. 90%

20. Consolidation test of a soil sample is carried out to determine:

ⓐ. The void ratio in soil

ⓑ. The decrease in the total volume

ⓒ. The liquid limit of soil

ⓓ. The plastic limit of soil

21. Bearing capacity of soils depends on:

ⓐ. Physical characteristics of soil particles

ⓑ. Moisture content of soil

ⓒ. Both of the above

ⓓ. None of the above

22. The wall constructed to resist horizontal pressure is:

ⓐ. Main wall

ⓑ. Partition wall

ⓒ. Retaining wall

ⓓ. All of the above

23. Cohesion is defined as:

ⓐ. Attraction of molecules of the same material

ⓑ. Attraction of molecules of different materials

ⓒ. Both of the above

ⓓ. None of the above

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

ⓐ. Lacustrine soil

ⓑ. Aeolian soil

ⓒ. Marine soil

ⓓ. Alluvial soil

25. The force exerted by flowing water on the sediment particles to cause their motion is called:

ⓐ. Eddy force

ⓑ. Buoyant force

ⓒ. Tractive force

ⓓ. Kinematic force

26. * For a properly designed footing, the bearing stress must be less than the bearing capacity, which is the bearing stress that causes a ……… failure within the foundation soil.

ⓐ. Tensile

ⓑ. Expected

ⓒ. Unexpected

ⓓ. Shear

27. * Angle of internal friction is minimum for:

ⓐ. Angular grained loose soil

ⓑ. Angular grained dense soil

ⓒ. Round grained loose soil

ⓓ. Clay

28. * The shear resistance between particles is provided by:

ⓐ. Terzaghi’s

ⓑ. Pairwise

ⓒ. Adhesive

ⓓ. Broken

29. * When water content in a soil is reduced beyond the shrinkage limit, the soil will be:

ⓐ. Solid state

ⓑ. Liquid state

ⓒ. Semi-solid state

ⓓ. Plastic state

30. * A ‘shear stress’ is a stress which is applied…….to a face of material.

ⓐ. Perpendicularity

ⓑ. Parallel

ⓒ. Softly

ⓓ. With a bang

31. Uniformity coefficient of a soil is:

ⓐ. always less than 1

ⓑ. always equal to 1

ⓒ. equal to or less than 1

ⓓ. equal or greater than 1

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

ⓐ. stress controlled

ⓑ. strain controlled

ⓒ. drainage controlled

ⓓ. volume controlled

33. The angle between the horizontal and the slope of a heap produced by pouring clean dry sand from a small height is known as:

ⓐ. the angle of equilibrium

ⓑ. the angle of bulk

ⓒ. the angle of rest

ⓓ. the angle of repose

34. Cohesive soils:

ⓐ. bear high shear strength

ⓑ. are more plastic

ⓒ. are good for backfill

ⓓ. are strong against landslides

35. The coefficient of earth pressure for loose sand having an angle of internal friction of 30° is:

ⓐ. 0.5

ⓑ. 1/3

ⓒ. 3

ⓓ. 1

36. Over-consolidated soils caused due to:

ⓐ. erosion of overburden

ⓑ. melting of ice sheets after glaciations

ⓒ. permanent rise of water table

ⓓ. all of the above

37. The angle of repose of soil is defined as the angle that an inclined plane makes with the horizontal when a body placed on it just sliding is:

ⓐ. maximum

ⓑ. minimum

ⓒ. average

ⓓ. vertical

38. Specific gravity of solid particles is determined in a laboratory with:

ⓐ. Shrinkage Limit Method

ⓑ. Gas Jar Method

ⓒ. Density Bottle Method

ⓓ. All of the above

39. If a solid suffers a change in volume by the application of external loads but recovers its volume immediately after the load is removed, such a soil is termed as:

ⓐ. Compressive soils

ⓑ. Plastic solids

ⓓ. Perfect soils

40. The angle between the directions of the failure and the major principal plane is equal to:

ⓐ. 90° + effective angle of shearing resistance

ⓑ. 90° + half of the angle of shearing resistance

ⓓ. 45° – half of the angle of shearing resistance

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

ⓐ. Slope failure

ⓑ. Base failure

ⓓ. Toe failure

42. Terzaghi’s theory of one-dimensional consolidation assumes:

ⓐ. Soil is homogeneous and fully saturated

ⓑ. Water and soil particles are incompressible

ⓓ. All of the above

43. The angle of internal friction for cohesive soils is equal to:

ⓐ. Zero

ⓑ. 30°

ⓒ. 45°

ⓓ. 15°

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

ⓐ. Clayey, Silty, and Sandy

ⓑ. Clayey, Sandy, and Granular

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

45. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio, respectively, are:

ⓐ. 1.0 and 0.0

ⓑ. 0.0 and 1.0

ⓒ. 0.5 and 1.0

ⓓ. 1.0 and 0.5

46. The value of net allowable bearing pressure is:

ⓐ. Net safe bearing capacity

ⓑ. Net safe settlement pressure

ⓓ. Gross safe bearing capacity

47. For a well-graded soil, the coefficient of curvature will be between:

ⓐ. 1 and 10

ⓑ. 2 and 8

ⓒ. 3 and 7

ⓓ. 1 and 3

48. The ratio of the unit weight of soil solids to that of water is called:

ⓐ. Void ratio

ⓑ. Porosity

ⓓ. Degree of saturation

49. The bearing capacity of soil depends upon:

ⓐ. Shape and size of the particles

ⓑ. Cohesive properties of particles

ⓓ. All of the above

50. The shearing strength of a cohesionless soil depends upon:

ⓐ. Dry density

ⓑ. Rate of loading

ⓓ. Nature of loading

FAQs on Soil Mechanics MCQs for Civil Engineers

▸ What is soil mechanics in civil engineering?

Soil mechanics is a branch of civil engineering that deals with the behavior of soil and its applications in construction. It involves studying the physical properties of soil, its classification, and the principles of stress, strain, and shear strength. For more detailed MCQs on soil mechanics, visit gkaim.com.

▸ How can I prepare for Soil Mechanics MCQs for civil engineering exams?

To prepare for Soil Mechanics MCQs, you should focus on understanding key concepts such as soil properties, compaction, consolidation, and slope stability. Practicing a variety of MCQs and reviewing detailed solutions will also be beneficial. Explore comprehensive MCQs on this topic at gkaim.com.

▸ What are the fundamental concepts covered in Soil Mechanics MCQs?

Fundamental concepts covered in Soil Mechanics MCQs include soil classification, compaction, permeability, consolidation, shear strength, and earth pressure theories. Each of these topics is crucial for designing stable foundations and structures. Visit gkaim.com for detailed MCQs and explanations.

▸ Where can I find reliable MCQs on Soil Mechanics?

Reliable MCQs on Soil Mechanics can be found on educational websites like gkaim.com. These sites offer a variety of questions with detailed explanations to help you understand the concepts thoroughly and prepare for exams effectively.

▸ What are the types of soil tests commonly included in Soil Mechanics MCQs?

Common soil tests included in Soil Mechanics MCQs are Atterberg limits, Proctor compaction test, permeability test, triaxial shear test, and consolidation test. Understanding these tests and their applications is essential for civil engineers. Detailed MCQs on these tests are available at gkaim.com.

▸ How does soil compaction affect construction projects?

Soil compaction increases the density of soil, which improves its load-bearing capacity and reduces settlement issues. Properly compacted soil ensures the stability and longevity of structures. For MCQs related to soil compaction and its impact, visit gkaim.com.

▸ Why is understanding soil permeability important for civil engineers?

Understanding soil permeability is crucial for designing effective drainage systems and ensuring the stability of structures. Permeability determines how easily water can flow through soil, affecting foundation design and soil stability. Find more about soil permeability in the MCQs at gkaim.com.

▸ What is the significance of shear strength in soil mechanics?

Shear strength is a critical property of soil that determines its ability to resist sliding or failure under load. It is essential for designing stable foundations and slopes. Detailed MCQs on shear strength and its significance can be found at gkaim.com.

▸ How do consolidation and settlement affect building foundations?

Consolidation and settlement affect building foundations by causing gradual deformation under load. Understanding these processes helps in designing foundations that minimize settlement and ensure structural stability. Explore MCQs on consolidation and settlement at gkaim.com.

▸ What are the applications of soil mechanics in civil engineering projects?

Applications of soil mechanics in civil engineering include foundation design, slope stability analysis, earth retaining structures, and pavement design. It helps in predicting and improving the performance of these structures. Visit gkaim.com for detailed MCQs on the applications of soil mechanics.

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Soil Mechanics MCQs for Civil Engineers – Part 4

FAQs on Soil Mechanics MCQs for Civil Engineers

▸ What is soil mechanics in civil engineering?

▸ How can I prepare for Soil Mechanics MCQs for civil engineering exams?

▸ What are the fundamental concepts covered in Soil Mechanics MCQs?

▸ Where can I find reliable MCQs on Soil Mechanics?

▸ What are the types of soil tests commonly included in Soil Mechanics MCQs?

▸ How does soil compaction affect construction projects?

▸ Why is understanding soil permeability important for civil engineers?

▸ What is the significance of shear strength in soil mechanics?

▸ How do consolidation and settlement affect building foundations?

▸ What are the applications of soil mechanics in civil engineering projects?

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