Top 250+ Solved Geotechnical Engineering MCQ Questions Answer
Q. Voids ratio of a soil mass can
a. Never be greater than unity
b. Be zero
c. Take any value greater than zero
d. Take values between 0 and 1 only
Q. If the cohesive force (c), is 1.5 t/m2, the density ) of the soil is 2.0 t/m3, factor of safety (F) is 1.5and stability factor (Sn) is 0.05, the safe height of a slope is
a. 5 metres
b. 8 metres
c. 10 metres
d. 12 metres
Q. If the plasticity index of a soil mass is zero, the soil is
a. Sand
b. Silt
c. Clay
d. Clayey silt
Q. Coulomb's wedge theory assumes that
a. Back fill is dry, cohesionless, homogeneous and isotropic
b. Slip surface is the plane which passes through the heel of the wall
c. Position and direction of the resultant earth pressure are known
d. All the above
Q. 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 %
Q. 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
Q. If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is
a. 40 %
b. 60 %
c. 80 %
d. 100 %
Q. Which one of the following statements is true?
a. Clays are more porous than sands
b. Pressure of organic matter in a soil decreases the bearing capacity of the soil
c. Aluminous cement is used for foundations in soils with chemical deposits
d. All the above
Q. 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
Q. Pick up the clay soil group which does not swell when wet from the following:
a. Kaolinite group
b. Mite group
c. Vermiculite group
d. Montrorillonite group
Q. Coefficient of consolidation of a soil is affected by
a. Compressibility
b. Permeability
c. Both compressibility and permeability
d. None of the above
Q. 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