1000 Best Soil and Foundation Engineering MCQ
Q145). A soil mass coated with a thin layer of paraffin weighs 460 g. When immersed, it displaces 299 cc of water. The weight of paraffin is 10 g. If specific gravity of solids is 2.5 and that of paraffin 0.9, the void ratio of soil, is
a).0.55
b).0.6
c).0.65
d).0.7
Correct Answer:
0.6
Explanation:
Q146). Pick up the incorrect definition from the following:
a).Ratio of the compressive strength of unconfined undisturbed soil to that of remoulded soil, is known as the sensitivity of the soil sample
b).The rotation of soil particles into stable state while remoulding, is known as the thiostropy of soil
c).The water content at which a soil changes from the liquid state to solid state, is known liquid limit of the soil
d).The water content at which a soil flows, is known plastic limit of the soil
Correct Answer:
The water content at which a soil flows, is known plastic limit of the soil
Explanation:
Q147). In a fow 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.
Correct Answer:
flow lines and equipotential lines cross each other at right angles
Explanation:
Q148). The ratio of the volume of water present in a given soil mass to the total volume of its voids, is known
a).porosity
b).void ratio
c).percentage voids
d).degree of saturation.
Correct Answer:
degree of saturation.
Explanation:
Q149). Stoke’s law does not hold good if the size of particle is smaller than
a).0.0002 mm
b).0.002 mm
c).0.02 mm
d).0.2 mm
Correct Answer:
0.0002 mm
Explanation:
Q150). In a purely cohesive soil, the critical centre lies at the intersection of
a).perpendicular bisector of slope and the locus of the centre
b).perpendicular drawn at l/3rd slope from toe and the locus of the centre
c).perpendicular drawn at 2/3rd slope from toe and the locus of the centre
d).directional angles
Correct Answer:
directional angles
Explanation:
Q151). The angle of internal friction, is least for
a).angular-grained loose sand
b).angular -grained dense sand
c).round-grained loose sand
d).Clays
Correct Answer:
Clays
Explanation:
Q152). In non-cohesive soil in passive state of plastic equilibrium
a).major principal stress is horizontal
b).minor principal stress is vertical
c).major principal stress is vertical
d).minor and major principal stresses are equally inclined to the horizontal.
Correct Answer:
minor principal stress is vertical
Explanation: