Top 250+ Solved Geotechnical Engineering MCQ Questions Answer
Q. The phreatic line in an earth dam may be
a. Circular
b. Elliptical
c. Parabolic
d. A straight line
Q. If the voids of a soil mass are full of air only, the soil is termed as
a. Air entrained soil
b. Partially saturated soil
c. Dry soil
d. Dehydrated soil
Q. On wetting, cohesive soils,
a. Loose permeability
b. Gain shear strength
c. Loose elasticity
d. Decrease their shear strength
Q. A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is
a. 95.4 %
b. 95.5 %
c. 95.6 %
d. 95.7 %
Q. A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the void ratio, is
a. 0.858
b. 0.860
c. 0.862
d. 0.864
Q. If the specific gravity and voids in soil sample are G and e respectively, the hydraulic gradient i,is
a. (G - 1)/(1 + e)
b. (G + 1)/(1 - e)
c. (1 - G)/(1 + e)
d. (1 + G)/(1 + e)
Q. In a flow net
a. Flow lines and equipotential lines cross each other at right angles
b. Fields are rectangles whose length is twice the breadth
c. Smaller the dimensions of the field, smaller will be the hydraulic gradient and velocity of flow through it
d. For homogeneous soil, the curves are smooth and circular
Q. Which of the following methods is most accurate for the determination of the water contentof soil?
a. Oven drying method
b. Sand bath method
c. Calcium carbide method
d. Pycnometer method
Q. The reduction in volume of soil due to squeezing out of water from the voids, is termed
a. Primary consolidation
b. Primary compression
c. Primary time effect
d. All the above
Q. Which of the following statements is correct?
a. Uniformity coefficient represents the shape of the particle size distribution curve.
b. For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
c. A soil is said to be well graded if it has most of the particles of about the same size
d. None of the above
Q. The water content of soil, which represents the boundary between plastic state and liquid state,is known as
a. Liquid limit
b. Plastic limit
c. Shrinkage limit
d. Plasticity index
Q. The direct shear test suffers from the following disadvantage:
a. Drain condition cannot be controlled
b. Pore water pressure cannot be measured
c. Shear stress on the failure plane is not uniform
d. The area under the shear and vertical loads does not remain constant throughout the test
Q. The clay mineral with the largest swelling and shrinkage characteristics is
a. Kaolinite
b. Illite
c. Montmorillonite
d. None of the above