Engineering MCQ Quiz Hub

1. The method of the slices is applicable to
homogenous soils
stratified soils
saturated soils
non-uniform slopes

2. When the seepage pressure becomes equal to the pressure due to submerged weight of a soil, the effective pressure is reduced to zero and the soil particles have a tendency to move up in the direction of flow. This phenomenon is generally known
quick condition
boiling condition
quick sand
all the above.

3. The phreatic line in an earth dam may be
circuar
elliptical
parabolic
a straight line

4. Pick up the correct statement from the following:
A maximum value of dry density is obtained at optimum water content
At low value of water content most soils tend to be stiff.
At high water content, the dry density decreases with an increase of water content.
All the above.

5. The shearing strength of a cohesion-less soil depends upon
dry density
rate of loading
confining pressure
nature of loading.

6. According to IS : 2720 - 1965, the composition of a dispersing solution used in pipette analysis for determining the size of particles, is
sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre
sodium-hexametaphosphate 7 g, sodium carbonate 33 g and distilled water one litre
sodium-hexametaphosphate 23 g, sodium carbonate 17 g and distilled water one litre
none of these.

7. Cohesive soils are generally
plastic and also compressible
elastic and also compressible
plastic but incompressible
none of these.

8. The inventor of the term soil mechanics, was
Kray
Dr. Karl Terzaghi
Leygue
Fellenius.

9. Compression of soil occurs rapidly if voids are filled with
air
water
partly with air and partly with water
none of these.

10. If drainage is permitted throughout the test, during the application of both normal, and shear stresses so that full consolidation occurs and no excess pore pressure is set up at any stage of the test, is known as
quick test
drained test
consolidated undrained test
none of these.

11. A soil sample of mass specific gravity 1.92, has a moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is
95.40%
95.50%
95.60%
95.70%

12. For slopes of limited extent the surface of slippage, is usually along
a parabolic arc
an elliptical arc
a straight line
a circular arc.

13. For a base failure of a slope, depth factor
Df = 1
Df < 1
Df > 1
none of these.

14. A critical hydraulic gradient may occur when
flow is in upward direction
seepage pressure is in upward direction
effective pressure is zero
all the above.

15. Plasticity index is defined as the range of water content between
liquid and plastic limit
plastic limit and semi solid limit
semi-solid limit and liquid limit
liquid limit and solid limit.

16. The minimum depth of building foundations on
sandy soils is 80 cm to 100 cm
clay soils is 90 cm to 160 cm
rocky soils is 5 cm to 50 cm
all the above.

17. 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
4
8
12
20

18. The total weight of a pycnometer with water and oven dried soil 20 (g) is 1600 g. The pycnometer filled with water alone weighs 1500 g. The specific gravity of the soil, is
1
1.5
2
2.5

19. he consolidation time for soils
increases with increasing compressibility
decreases with increasing permeability
increases rapidly with increasing size of soil mass
All the above.

20. The zero atmospheric pressure is at
sea level
mean sea level
water table
both (c) and (d) of the above.

21. 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
0.55
0.6
0.65
0.7

22. Pick up the incorrect definition from the following:
Ratio of the compressive strength of unconfined undisturbed soil to that of remoulded soil, is known as the sensitivity of the soil sample
The rotation of soil particles into stable state while remoulding, is known as the thiostropy of soil
The water content at which a soil changes from the liquid state to solid state, is known liquid limit of the soil
The water content at which a soil flows, is known plastic limit of the soil

23. In a fow net
flow lines and equipotential lines cross each other at right angles
fields are rectangles whose length is twice the breadth
smaller the dimensions of the field, smaller will be the hydraulic gradient and velocity of flow through it
. for homogeneous soil, the curves are smooth and circular.

24. The ratio of the volume of water present in a given soil mass to the total volume of its voids, is known
porosity
void ratio
percentage voids
degree of saturation.

25. Stoke's law does not hold good if the size of particle is smaller than
0.0002 mm
0.002 mm
0.02 mm
0.2 mm

26. In a purely cohesive soil, the critical centre lies at the intersection of
perpendicular bisector of slope and the locus of the centre
perpendicular drawn at l/3rd slope from toe and the locus of the centre
perpendicular drawn at 2/3rd slope from toe and the locus of the centre
directional angles

27. The angle of internal friction, is least for
angular-grained loose sand
angular -grained dense sand
round-grained loose sand
clays.

28. In non-cohesive soil in passive state of plastic equilibrium
major principal stress is horizontal
minor principal stress is vertical
major principal stress is vertical
minor and major principal stresses are equally inclined to the horizontal

29. In active state of plastic equilibrium in a non cohesive soil with horizontal ground surface
major principal stress is horizontal
minor principal stress is vertical
major principal stress is vertical
minor and major principal stresses are equally inclined to horizontal.

30. The reduction in volume of soil due to squeezing out of water from the voids, is termed
primary consolidation
primary compression
primary time effect
all the above.

31. Drift' is the material picked up, mixed, disintegrated, transported and redeposited by
wind
gravitational force
glaciated water
all the above.

32. The consistency index of a soil is defined as the ratio of
liquid limit plus the natural water content to the plasticity index of the soil
liquid limit minus the natural water content to the plasticity index of the soil
natural water content of a soil minus plastic limit to the plasticity index of the soil
natural water content of a soil plus its plastic limit to the plasticity index of the soil.

33. The shear strength in plastic undrained clay, is due to
inter-granular friction
internal friction
cohesion
none of these.

34. A clay subjected to pressure in excess to its present over-burden, is said to be
pre-compressed
pre-consolidated
over-consolidated
all the above.

35. A saturated soil sample has water content of 40% and specific gravity of soil particles 2.7. The void ratio of the soil, is
0.4
0.52
1.08
none of these.

36. For testing a saturated clay for shear strength, the test recommended, is
direct shear test
triaxial compression test
unconfined compression test
all the above.

37. The critical exist gradient of seepage water in soils, increases with
an increase in specific gravity
a decrease in specific gravity
a decrease in void ratio
none of these.

38. Pick up the correct statement from the following:
The void ratio in soils is defined as the ratio of the volume of voids to the volume of solids
The porosity of a soil is defined as the ratio of the volume of voids to the gross volume of the soil
The bulk density of a soil is defined as the unit weight of the soil
All the above.

39. The shear strength of a soil
increases with an increase in the normal stress
is proportional to the cohesion of the soil
is generally known as the strength of the soil
all the above.

40. The property of a soil which permits water to percolate through it, is called
moisture content
permeability
capillarity
none of these.

41. The triaxial apparatus is usually used for
unconsolidated-undrained test
. consolidated-undrained test
drained test
all the above tests.

42. A pycnometer is used to determine
density index.
water content
dry density
voids ratio