Engineering MCQ Quiz Hub

1. Soils containing organic matters
are of spongy nature
swell with decrease of moisture
shrink with increase of moisture content
none of these.

2. A soil not fully consolidated under the existing over-burden pressure, is called
pre-consolidated
normally consolidated
under-consolidated
none of these.

3. The angle of internal friction is maximum for
angular-grained loose sand
angular-grained dense sand
round-grained dense sand
round-grained loose sand

4. A grillage foundation
is provided for heavily loaded isolated columns
is treated as spread foundation
consists of two sets of perpendicularly placed steel beams
all the above.

5. The plasticity of fine soils may be assessed by means of
dry strength test
toughness test
dilatancy test
all of these.

6. The density of soil can be increased
by reducing the space occupied by air
by elastic compression of soil grains
by expelling water from pores
All the above.

7. he length/diameter ratio of cylindrical specimens used in triaxial test, is generally
1
1.5
2
2.5

8. Pick up the correct statement from the following:
The object of classifying soils is to arrange them into groups according to their properties and behaviour
A soil classification system is meant to provide an accepted and systematic method of describing the various types of soils eliminating personal factors
The first category of soil classification is based on grain size of the soil
All the above.

9. The bearing capacity of a soil depends upon
size of the particles
shape of the particles
cohesive properties of particles
all the above.

10. A direct shear test possesses the following disadvantage:
A relatively thin thickness of sample permits quick drainage
A relatively thin thickness of sample permits quick dissipation of pore pressure developed during the test
As the test progresses the area under shear, gradually changes
none of these.

11. Through a point in a loaded soil mass, there exists n typical planes mutually orthogonal on which the stress is wholly normal and no shear stress acts, if n is
1
2
3
4

12. The pressure that builds up in pore water due to load increment on the soil, is termed
excess pore pressure
excess hydrostatic pressure
hydrodynamic pressure
all the above.

13. The ratio of emax and emin of silty sand, is
2
5
3.5
4

14. A flow net may be utilised for the determination of
exit gradient
seepage
hydrostatic pressure
all the above.

15. The neutral stress in a soil mass is
force per neutral area
force per effective area
stess taken up by the pore water
stress taken up by solid particles.

16. If voids ratio is 0.67, water content is 0.188 and specific gravity is 2.68, the degree of saturation of the soil, is
25%
40%
60%
75%

17. If water content of a soil is 40%, G is 2.70 and void ratio is 1.35, the degree of saturation is
70%
75%
80%
85%

18. A structure is erected on an impervious clay whose thickness is 12 m. Drainage is possible both at upper and lower surfaces. Coefficient of consolidation is 0.015 cm2 per minute. For attaining 50% consolidation with a time factor 0.20, the number of days required
3233
3123
33331
3313

19. Which one of the following statements is true for Mohr-Coulomb envelope ?
size of the particles
The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear
Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction
All the above.

20. On wetting, cohesive soils,
loose permeability
gain shear strength
loose elasticity
decrease their shear strength.

21. Which one of the following statements is true for Mohr-Coulomb envelope ? A. Coulomb suggests that the relationship between shear strength and normal stress, is adequately represented by the straight line
Coulomb suggests that the relationship between shear strength and normal stress, is adequately represented by the straight line
The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear
Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction
All the above.

22. On wetting, cohesive soils,
loose permeability
gain shear strength
loose elasticity
decrease their shear strength.

23. Pick up the correct statement from the following:
The range of water content between the liquid limit and plastic limit, is called plasticity index.
The ratio of the liquid limit minus the natural water content to the plasticity index of soils, is called consistency index
The ratio of natural water content minus its plastic limit to its plasticity index is called liquidity index
All the above.

24. Talus' is the soil transported by
wind
water
glacier
gravitational force.

25. A triaxial shear test is prefered to direct shear test, because
it can be performed under all three driange conditions with complete control
precise measurement of pore pressure and change in volume during test, is not posible
stress distribution on the failure plane, is non uniform
none of these.

26. Pick up the correct statement from the following:
When stress decreases, void, ratio decreases
When stress decreases, coefficient of permeability decreases
When stress decreases, coefficient of volume change decreases
When stress decreases void ratio, co-effi-cients of per-meability and volume change decrease.

27. Chemical weathering of soil is caused due to
oxidation
carbonation
hydration
all the above.

28. The Mohr's straight theory is based on the following fact :
Material fails essentially by shear
Ultimate strength of the material is determined by the stress in the plane of slip
Failure criterion is independent of the intermediate principal stress
All the above.

29. Hydrometer readings are corrected for:
temperature correction
meniscus correction
dispersing agent correction
temperature, meniscus and dispersing agent corrections.

30. Tergazhi's theory of one dimensional consolidation assumes
soil is homogeneous and fully saturated
water and soil particles are incompressible
deformation of the soil, is entirely due to change in volume
all the above.

31. An unsaturated 100 cm3 sample of soil weighs 190 g. If its dried weight is 160 g, water content of the soil, is
0.188
0.288
0.388
0.488

32. The specific gravity of Calcite is
2.65
2.72
2.85
290

33. The ratio of volume of air voids to the volume of total voids, is known as
air content
percentage air voids
percentage voids
porosity.

34. A plane inclined at an angle φ to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as
natural slope line
repose line
the φ line
all the above.

35. Tergazhi's theory of one dimensional consolidation assumes
load is applied in one direction
coefficient of permeability is constant
excess pore water drains out only in the vertical direction
all the above.

36. Pick up the correct statement from the following:
The dry density reduces by addition of water after attaining optimum moisture content
The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus
Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils
All the above.

37. A soil mass is said to be in plastic equilibrium if
it is stressed to maximum
it is on the verge of failure
it is in plastic stage
it starts flowing.

38. Pick up the correct statement from the following:
The permeability of the coarse-grained soils may be reduced by grouting.
The process of injecting fluids (i.e. grouts) into the pores space of the soil, is called grouting.
The grouting increases the soil strength.
All the above.

39. A soil sample of mass specific gravity 1.92, has a moisture content 30%. If the specific gravity of solids is 2.75, the void ratio, is
0.858
0.86
0.862
0.864

40. The ratio of the weight of water to the weight of solids in a given mass of soil, is known
porosity
specific gravity
void ratio
water content.

41. During seepage through a soil, direction of seepage is always
parallel to equipotential lines
perpendicular to stream lines
perpendicular to equipotential lines
none of these

42. The slip at critical angle, is generally known
δ 1-line
rupture plane
slip plane
all the above.

43. The property of a soil which allows it to be deformed rapidly without rupture, elastic rebound and also a volume change, is known
porosity
plasticity
permeability
ductility.