Practice Test: Question Set - 19
1. For shear strength, triaxial shear test is suitable because
- (A) It
can be performed under all three drainage conditions
- (B) Precise
measurement of the pore pressure and volume change during the test is possible
- (C) Stress
distribution on the failure plane, is uniform
- (D) All
the above
2. The zero atmospheric pressure is at
- (A) Sea level
- (B) Water
table
- (C) Phreatic
surface
- (D) Both
(B) and (C) of the above
3. Terzaghi's bearing capacity factors Nc, Nq and Nr are functions of
- (A) Cohesion only
- (B) Angle of internal friction only
- (C) Both cohesion and angle of internal friction
- (D) None of the above
4. The general relationship between specific gravity (G), weight of water (γω), degree of saturation (Sr), void ratio (e) and bulk density (γ), is
- (A) γ = (S - eSr)
γω/(1 + e)
- (B) γ = (G + eSr)
γω/(1 + e)
- (C) γ = (1
+ e) γω/(G + Sr)
- (D) γ = (1
- Sr) e/(G + Sr)
5. 'Loess' is silty clay formed by the action of
- (A) Water
- (B) Glacier
- (C) Wind
- (D) Gravitational
force
6. Rise of water table in cohesion-less soils upto ground surface reduces the net ultimate bearing capacity approximately by
- (A) 25 %
- (B) 50 %
- (C) 75 %
- (D) 90 %
7. A decrease in water content results in a reduction of the volume of a soil in
- (A) Liquid state
- (B) Plastic
state
- (C) Semi
solid state
- (D) All of these
8. In non-cohesive soil in passive state of plastic equilibrium
- (A) Major
principal stress is horizontal
- (B) Minor
principal stress is vertical
- (C) Major
principal stress is vertical
- (D) Minor
and major principal stresses are equally inclined to the horizontal
9. A soil has a bulk density of 22 kN/m3 and water content 10 %. The dry density of soil is
- (A) 18.6 kN/m3
- (B) 20.0 kN/m3
- (C) 22.0 kN/m3
- (D) 23.2 kN/m3
10. Through a point in a loaded soil, the principal stress is maximum on
- (A) Minor
principal plane
- (B) Intermediate
principal plane
- (C) Major
principal plane
- (D) None of
these
11. The expression [Gs/(1 + ωGs)] ρω is used for
- (A) Dry density
- (B) Bulk density
- (C) Degree
of saturation
- (D) Optimum
water content
12. 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
13. If dry density, water density and specific gravity of solids of a given soil sample are 1.6 g/cc, 1.84 g/cc and 2.56 respectively, the porosity of the soil sample, is
- (A) 0.375
- (B) 0.370
- (C) 0.380
- (D) 0.390
14. The property of a soil which permits water to percolate through it, is called
- (A) Moisture
content
- (B) Permeability
- (C) Capillarity
- (D) None of
these
15. Toughness index is defined as the ratio of
- (A) Plasticity index to consistency index
- (B) Plasticity index to flow index
- (C) Liquidity index to flow index
- (D) Consistency index to liquidity index
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