Civil Soil Mechanics MCQ Practice Test - Set 18 - ObjectiveBooks

# Practice Test: Question Set - 18

1. Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.50 and void ratio 0.5, is
(A) 50 %
(B) 60 %
(C) 75 %
(D) 80 %

2. Cohesionless soil is
(A) Sand
(B) Silt
(C) Clay
(D) Clay and silt

3. At liquid limit, all soils possess
(A) Same shear strength of small magnitude
(B) Same shear strength of large magnitude
(C) Different shear strengths of small magnitude
(D) Different shear strengths of large magnitude

4. The ratio of the weight of given volume of soil solids to the weight of an equal volume of distilled water at the given temperature, is known
(A) Porosity
(B) Specific gravity
(C) Void ratio
(D) Water content

5. For a base failure of a slope, depth factor
(A) Df = 1
(B) Df < 1
(C) Df > 1
(D) None of these

6. If the water table rises upto ground surface, then the
(A) Effective stress is reduced due to decrease in total stress only but pore water pressure does not change
(B) Effective stress is reduced due to increase in pore water pressure only but total stress does not change
(C) Total stress is reduced due to increase in pore water pressure only but effective stress does not change
(D) Total stress is increased due to decrease in pore water pressure but effective stress does not change

7. A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at which quick sand condition occurs, is
(A) 0.25
(B) 0.50
(C) 0.75
(D) 1.0

8. The shear strength of a soil
(A) Increases with an increase in the normal stress
(B) Is proportional to the cohesion of the soil
(C) Is generally known as the strength of the soil
(D) All the above

9. Total number of stress components at a point within a soil mass loaded at its boundary is
(A) 3
(B) 6
(C) 9
(D) 16

10. A partially saturated soil is classified as
(A) One phase soil
(B) Two phase soil
(C) Three phase soil
(D) Four phase soil

11. The ratio of the undrained strength in the undrained state to the undrained strength, at the same water content, in the remoulded state, is called the sensivity of the clay. Its value for quick clays is
(A) 4
(B) 8
(C) 12
(D) 20

12. The ultimate consolidation settlement of a soil is
(A) Directly proportional to the voids ratio
(B) Directly proportional to the compression index
(C) Inversely proportional to the compression index
(D) None of the above

13. The ratio of settlement at any time 't' to the final settlement, is known as
(A) Co-efficient of consolidation
(B) Degree of consolidation
(C) Consolidation index
(D) Consolidation of undisturbed soil

14. Pick up the correct statement from the following:
(A) In hydrometer method, weight Wd per ml of suspension is found directly
(B) In pipette analysis, weight Wd per ml of suspension is found indirectly
(C) In pipette analysis, weight Wd per ml of suspension is found directly
(D) None of these

15. Unconfmed compressive strength test is
(A) Undrained test
(B) Drained test
(C) Consolidated undrained test
(D) Consolidated drained test

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