1000 Best Soil and Foundation Engineering MCQ
Q105). The passive earth pressure of a soil, is proportional to (where φ is the angle of internal friction of the soil.)
a).tan (45° – φ)
b).tan (45° + φ)
c).tan (45° – φ
d).tan (45° + φ)
Correct Answer:
tan (45° + φ)
Explanation:
Q106). If a soil undergoes a change in shape and volume by application of external loads over it, but recovers its shape and volume immediately after removal of the load, the property of the soil is said to be
a).Resilience of soils
b).Elasticity of soils
c).Compressibility of soils
d).None of these.
Correct Answer:
Elasticity of soils
Explanation:
Q107). If the unit weight of sand particles is 2.696 g/cc. and porosity in loose state is 44%, the critical hydraulic gradient for quick sand condition, is
a).0.91
b).0.92
c).0.93
d).0.95
Correct Answer:
0.95
Explanation:
Q108). The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m to 50 tonnes/m, the coefficient of compressibility is
a).0.01
b).0.02
c).0.05
d).0.001
Correct Answer:
0.01
Explanation:
Q109). Pick up the incorrect statement from the following:
a).The smaller the size of the pores, the higher the water can rise above the water table.
b).Below the water table, the pore water may be static.
c).The hydrostatic pressure depends on the depth below the water level.
d).None of these.
Correct Answer:
None of these.
Explanation:
Q110). The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known
a).liquid limit
b).plastic limit
c).shrinkage limit
d).permeability limit.
Correct Answer:
shrinkage limit
Explanation:
Q111). A sample of saturated soil has 30% water content and the specific gravity of soil grains is 2.6. The dry density of the soil mass in g/cm, is
a).1.47
b).1.82
c).1.91
d).none of these.
Correct Answer:
1.47
Explanation:
Q112). The specific gravity of sands, is approximately
a).1.6
b).2
c).2.2
d).2.6
Correct Answer:
2.6
Explanation: