1000 Best Soil and Foundation Engineering MCQ
Q137). For slopes of limited extent the surface of slippage, is usually along
a).a parabolic arc
b).an elliptical arc
c).a straight line
d).a circular arc.
Correct Answer:
a circular arc.
Explanation:
Q138). 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 of the above
Correct Answer:
All of the above
Explanation:
Q139). Plasticity index is defined as the range of water content between
a).liquid and plastic limit
b).plastic limit and semi solid limit
c).semi-solid limit and liquid limit
d).liquid limit and solid limit.
Correct Answer:
liquid and plastic limit
Explanation:
Q140). The minimum depth of building foundations on
a).sandy soils is 80 cm to 100 cm
b).clay soils is 90 cm to 160 cm
c).rocky soils is 5 cm to 50 cm
d).All of the above
Correct Answer:
All of the above
Explanation:
Q141). The ratio of the undrained strength in the undrained state to the undrained strength, at the same water content, in the remoulded state, is called the sensivity of the clay. Its value for quick clays is
a).4
b).8
c).12
d).20
Correct Answer:
20
Explanation:
Q142). The total weight of a pycnometer with water and oven dried soil 20 () is 1600 g. The pycnometer filled with water alone weighs 1500 g. The specific gravity of the soil, is
a).1
b).1.5
c).2
d).2.5
Correct Answer:
2
Explanation:
Q143). The consolidation time for soils
a).increases with increasing compressibility
b).decreases with increasing permeability
c).increases rapidly with increasing size of soil mass
d).All of the above
Correct Answer:
All of the above
Explanation:
Q144). The zero atmospheric pressure is at
a).sea level
b).phreatic surface
c).water table
d).both (b) and ©
Correct Answer:
both (b) and ©
Explanation: