Top 250+ Solved Soil Mechanics and Foundations MCQ Questions Answer
Q. The strength of a soil is usually identified by
a. direct tensile stress
b. direct compressive stress
c. ultimate shear stress
d. effective stress
Q. When applying Darcy's law to soils, it assumed that the
a. soil is incompressible
b. soil is homogeneous and isotropic
c. flow conditions are laminar
d. all of these
Q. The consolidation of a soil is defined as the
a. process of compression by gradual reduction of pore space under steady load
b. process which gives gradual decrease of water content at constant load
c. change in volume of soil due to expulsion of pure water under an applied load
d. any one of the above
Q. The liquid limit minus plastic limit is termed as
a. flow index
b. plasticity index
c. shrinkage index
d. liquidity index
Q. The piping failure in a hydraulic structure can be prevented by
a. diverting the seepage water into filter wells
b. increasing the creep length of flow of water
c. increasing the stress due to weight of the structure
d. all of the above
Q. The critical height in the stability of soil is the
a. minimum height at which it is possible for the sloped bank of soil to tbe stable
b. macimum height at which it is possible for the sloped bank of soil to be stable
c. minimum vertical height of the soil in an open excavation
d. maximum vertical height of the soil is as open excavation
Q. The activity of clay is defined as the ratio of
a. liquid limit to plastic limit
b. liquidity index to plasticity index
c. plasticity index to clay fraction
d. plasticity index to shrinkage index
Q. The exit gradient of the seepage of water through a soil medium is the
a. slope of the flow line
b. slope of the equi-potential line
c. ration of total head to the length of seepage
d. ratio of the head loss to the length of seepage
Q. The unconfined compressive strength of a very soft clay is
a. 10 to 25 kN/m2
b. 25 to 150 kN/m2
c. 150 to 400 kN/m2
d. Above 400 kN/m2
Q. A soil is in a semi-solid state, if the consistency index is
a. zero
b. one
c. more than unity
d. none of these
Q. The unit weight of a soil at zero air voids depends upon
a. unit weight of water
b. water content
c. specific gravity
d. all of these
Q. The maximum unit pressure that a soil can withstand without rupture in shear or without excessive settlement of the structure, is called
a. allowable bearing pressure
b. safe bearing capacity
c. ultimate bearing capacity
d. bearing capacity
Q. If a shear stress is applied on a dense sand, the shear strain caused will
a. increase
b. decrease
Q. In case of footings in sand, if the soil pressure distribution is triangular, the maximum soil pressure is
a. equal to
b. double
c. three times
d. four times