Soil Mechanics (Practice Test MCQs)

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1. The primary constituent of soil is:





2. The term “void ratio” refers to the ratio of:





3. Which soil has the smallest particle size?





4. Permeability of soil primarily depends on:





5. The Atterberg limits are used to determine:





6. Which instrument is used to determine the liquid limit of soil?





7. The plasticity index is given by:





8. Which soil shows high compressibility?





9. The critical hydraulic gradient is related to:





10. Specific gravity of most inorganic soils ranges between:





11. Soil compaction is performed to:





12. Standard Proctor test is performed to determine:





13. The effective stress principle was given by:





14. Shear strength of soil is mainly due to:





15. The process of water rising in soil pores against gravity is called:





16. Quick sand condition occurs when:

18. Which method is used to measure permeability in the laboratory for coarse-grained soils?





19. The angle of repose is related to:





20. Over-consolidated clay has:





21. The term “overburden pressure” refers to:





22. What is the typical value of unit weight of saturated clay?





23. Darcy’s law is valid for:





24. Consolidation of soil is the process of:





25. The compression index (Cc) is used to estimate:





26. The shrinkage limit is the water content at which:





27. The coefficient of permeability has the unit:





28. A clayey soil with high plasticity index will have:





29. The triaxial test is preferred over direct shear test because:





30. The specific gravity of soil solids (Gs) is used to calculate:





31. Which of the following soils has the highest shear strength?





32. The term “thixotropy” in soil mechanics means:





33. The degree of saturation is defined as the ratio of:





34. Which soil has the highest permeability?





35. The angle of internal friction for clay is generally:





36. The neutral pressure in soil refers to:





37. The coefficient of consolidation is expressed in:





38. The liquid limit indicates:





39. Collapsible soils are generally found in:





40. The term “swell pressure” refers to:





41. The term “relative density” is used for:





42. The clay mineral responsible for swelling is:





43. Negative pore water pressure occurs in:





44. The permeability of fine-grained soils is measured using:





45. The effective stress is:





46. In saturated soil, the degree of saturation is:





47. Which test is used to find bearing capacity of soil?





48. The compressibility of soil is governed by:





49. Loose sand when saturated may undergo:





50. The ratio of volume of voids to total volume is called:





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