The admixture of coarser particles like sand or silt to clay causes______________?

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. A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m2 to 200 kN/ m2. If the effective stress is further increased from 200 kN/ m2 to 400 kN/ m2, then the settlement of the same clay is__________________?

   A. 10 mm
   B. 20 mm
   C. 40 mm
   D. none of the above

3. According to IS classification, the range of silt size particles is_________________?

   A. 4.75 mm to 2.00 mm
   B. 2.00 mm to 0.425 mm
   C. 0.425 mm to 0.075 mm
   D. 0.075 mm to 0.002 mm

4. If the sand in-situ is in its densest state, then the relative density of sand is_____________?

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

5. For a loose sand sample and a dense sand sample consolidated to the same effective stress_____________?

   A. ultimate strength is same and also peak strength is same
   B. ultimate strength is different but peak strength is same
   C. ultimate strength is same but peak strength of dense sand is greater than that of loose sand
   D. ultimate strength is same but peak

6. Sand particles are made of________________?

   A. rock minerals
   B. kaolinite
   C. illite
   D. montmorillonite

7. The clay mineral with the largest swelling and shrinkage characteristics is_______________?

   A. kaolinite
   B. illite
   C. montmorillonite
   D. none of the above

8. Time factor for a clay layer is_______________?

   A. a dimensional parameter
   B. directly proportional to permeability of soil
   C. inversely proportional to drainage path
   D. independent of thickness of clay layer

9. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear________________?

   A. decreases
   B. increases
   C. remains unchanged
   D. first increases and then decreases

10. Relative density of a compacted dense sand is approximately equal to_____________?

    A. 0.4
    B. 0.6
    C. 0.95
    D. 1.20