Multiple Choice Questions Answers Foundation Engineering - Set 14 - ObjectiveBooks

# Practice Test: Question Set - 14

1. The shearing strength of a cohesion-less soil depends upon
(A) Dry density
(C) Confining pressure

2. Sand particles are made of
(A) Rock minerals
(B) Kaolinite
(C) Illite
(D) Montmorillonite

3. The water content of soil is defined as the ratio of
(A) Volume of water to volume of given soil
(B) Volume of water to volume of voids in soil
(C) Weight of water to weight of air in voids
(D) Weight of water to weight of solids of given mass of soil

4. A critical hydraulic gradient may occur when
(A) Flow is in upward direction
(B) Seepage pressure is in upward direction
(C) Effective pressure is zero
(D) All the above

5. Which of the following methods is best suited for determination of permeability of coarse-grained soils?
(C) Both the above
(D) None of the above

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

7. The ratio of the volume of water present in a given soil mass to the total volume of its voids, is known
(A) Porosity
(B) Void ratio
(C) Percentage voids
(D) Degree of saturation

8. The slope of isochrone at any point at a given time indicates the rate of change of
(A) Effective stress with time
(B) Effective stress with depth
(C) Pore water pressure with depth
(D) Pore water pressure with time

9. 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

10. The total active earth pressure due to dry back fill with no surcharge, acts at H/3 above the base of the wall and is directly proportional to
(A) H
(B) √H
(C) H2
(D) H3

11. 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

12. Geologic cycle for the formation of soil, is
(A) Upheavel → transportation → deposition → weathering
(B) Weathering → upheaval → transportation → deposition
(C) Transportation → upheaval → weathering → deposition
(D) Weathering → transportation → deposition → upheaval

13. The area of cross-section ‘A’ at failure or during any stage of Triaxial Compression Test and its initial length (L) and volume (V), are related by the equation
(A) A = (V + ΔV)/(L - ΔL)
(B) A = (V - ΔV)/(V + ΔL)
(C) A = (V - ΔV)/(L - ΔL)
(D) A = (V + ΔV)/(L + ΔL)

14. The maximum dry density upto which any soil can be compacted depends upon
(A) Moisture content only
(B) Amount of compaction energy only
(C) Both moisture content and amount of compaction energy
(D) None of the above

15. For determine the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled = 850 g water filled in pycnometer up to top The specific gravity of soil solids, is
(A) 2
(B) 2.25
(C) 2.50
(D) 2.75

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