Related Mcqs:

1. Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same degree of consolidation is_________________?

   A. 3 months
   B. 6 months
   C. 12 months
   D. 24 months

2. 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

3. Within the consolidation process of a saturated clay__________________?

   A. a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant
   B. a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant
   C. both neutral pressure and effective pressure decrease
   D. both neutral pressure and effective pressure increase

4. Coefficient of consolidation for clays normally_______________?

   A. decreases with increase in liquid limit
   B. increases with increase in liquid limit
   C. first increases and then decreases with increase in liquid limit
   D. remains constant at all liquid limits

5. Coefficient of consolidation of a soil is affected by_______________?

   A. compressibility
   B. permeability
   C. both compressibility and permeability
   D. none of the above

6. The ultimate consolidation settlement of a structure resting on a soil_______________?

   A. decreases with the increase in the initial voids ratio
   B. decreases with the decrease in the plastic limit
   C. increases with the increase in the initial voids ratio
   D. increases with the decrease in the porosity of the soil

7. Valid range for S, the degree of saturation of soil in percentage is______________?

   A. S>0
   B. S<0
   C. 0<S<100
   D. 0 < S < 100

8. When the degree of saturation is zero, the soil mass under consideration represents______________?

   A. one phase system
   B. two phase system with soil and air
   C. two phase system with soil and water
   D. three phase system

9. If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is______________?

   A. 40%
   B. 60%
   C. 80%
   D. 100%

10. If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is________________?

    A. less than specific gravity of soil
    B. equal to specific gravity of soil
    C. greater than specific gravity of soil
    D. independent of specific gravity of soil