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. Coefficient of consolidation of a soil is affected by_______________?

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

3. Which one of the following clays behaves like a dense sand ?

   A. over-consolidated ciay with a high over-consolidation ratio
   B. over-consolidated clay with a low over-consolidation ratio
   C. normally consolidated clay
   D. under-consolidated clay

4. 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

5. Degree of consolidation is________________?

   A. directly proportional to time and inversely proportional to drainage path
   B. directly proportional to time and inversely proportional to square of drainage path
   C. directly proportional to drainage path and inversely proportional to time
   D. directly proportional to square of drainage path and inversely proportional to time

6. 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

7. 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

8. Uniformity coefficient of a soil is__________________?

   A. always less than 1
   B. always equal to 1
   C. equal to or less than 1
   D. equal to or gi eater than 1

9. Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability__________________?

   A. increases by 25%
   B. increases by 50%
   C. increases by 33.3%
   D. decreases by 33.3%

10. Skempton’s pore pressure coefficient B for saturated soil is________________?

    A. 1
    B. zero
    C. between 0 and 1
    D. greater than 1