1000 Best Soil and Foundation Engineering MCQ
Q17). A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm. If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is
a).0.111
b).0.556
c).0.696
d).none of these.
Correct Answer:
0.556
Explanation:
Q18). A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.6. If the moisture content in the soil is 20%, the degree of saturation is
a).0.2
b).0.77
c).0.92
d).none of these.
Correct Answer:
0.92
Explanation:
Q19). According to Coulomb’s wedge theory, the active earth pressure slides the wedge
a).down and outwards on a slip surface
b).up and inwards on a slip surface
c).horizontal upward and parallel to base
d).horizontal inward and parallel to base.
Correct Answer:
down and outwards on a slip surface
Explanation:
Q20). The effective size of particles of soil is denoted by
a).D10
b).D20
c).D30
d).D60
Correct Answer:
D10
Explanation:
Q21). Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.50 and void ratio 0.5, is
a).0.5
b).0.6
c).0.75
d).0.8
Correct Answer:
0.75
Explanation:
Q22). The coefficient of compressibility of soil, is the ratio of
a).stress to strain
b).strain to stress
c).stress to settlement
d).rate of loading to that of settlement.
Correct Answer:
strain to stress
Explanation:
Q23). If the failure of a finite slope occurs through the toe, it is known as
a).slope failure
b).face failure
c).base failure
d).toe failure.
Correct Answer:
toe failure.
Explanation:
Q24). Rankine’s theory of active earth pressure assumes
a).soil mass is homogeneous, dry and cohesionless
b).ground surface is a plane which may be horizontal or inclined
c).back of the wall is vertical and smooth
d).All of the above
Correct Answer:
All of the above
Explanation: