SOIL MECHANICS AND FOUNDATION ENGINEERING MCQS SET 04

SOIL MECHANICS AND FOUNDATION ENGINEERING MCQS SET 04

1. Stoke's law sates that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon
A. shape of grain
B. weight of grain
C. size of grain
D. shape and size of grain
E. shape, size and weight of grain.
Answer: Option E
 

2. Pick up the correct statement from the following:
A. When water table is above the base of a footing, the dry weight m should be used for soil below water table
B. When water table is located somewhat below the base of a footing, the elastic wedge is partly of moist soil and partly of submerged soil, and a suitable reduction factor is used
C. When water table is just at the base of the footing, no reduction factor is used
D. None of these.
Answer: Option B
 

3. Pick up the correct statement from the following :
A. In soils, the flow index indicates variation in shear strength with water content
B. Liquid limit minus plastic limit, is known as plasticity index of the soil
C. Plastic limit minus shrinkage limit, is known as shrinkage index of the soil
D. The ratio of the plasticity index to the flow limit, is known as toughness index of the soil
E. All the above.
Answer: Option E
 

4. Water content of a soil sample is the difference of the weight of the given sample at the given temperature and the weight determined after drying it for 24 hours at temperature ranging from
A. 80° to 90°C
B. 90° to 95°C
C. 95° to 100°C
D. 103° to 105°C
E. 105° to 110°C
Answer: Option E
 

5. The liquid limit and plastic limit exist in
A. sandy soils
B. silty soils
C. gravel soils
D. clay soils.
Answer: Option D
 

6. Back fill with a sloping surface exerts a total active pressure Pa on the wall of height H and acts at
A. H/4 above the base parallel to base
B. H/2 above the base parallel to base
C. H/3 above the base parallel to base
D. H/5 above the base parallel to base.
Answer: Option C
 

7. 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.
Answer: Option B
 

8. The ultimate Settlement of a soil is directly proportional to:
A. depth of the compressible soil strata
B. compressive index
C. void ratio
D. both (a) and (b)
E. none of these.
Answer: Option D
 

9. The seepage force in a soil, is
A. perpendicular to the equipotential lines
B. proportional to the exit graident
C. proportional to the head loss
D. all the above.
Answer: Option D
 

10. A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is
A. 1.0 g/cm2
B. 1.5 g/cm3
C. 2.0 g/cm3
D. 2.5 g/cm3
Answer: Option C