Soil Mechanics And Foundation
Engineering
1. The inventor of the
term soil mechanics, was
A. Kray
B. Dr. Karl Terzaghi
C. Leygue
D. Fellenius.
Answer => B
2. Pick up the correct
statement from the following :
A. To an agriculturist, soil is the_substance existing on the
earth's surface, which grows and develops plants
B. To a geologist, soils the material in a relatively thin
surface zone within which roots oceur, and rest of the crust is termed as rock
irrespective of hardness ,
C. To an engineer, soil is the unaggregated and uncemented
deposits of minerals and organic particles covering the earth's crust
D. All the above.
Answer => D
3. Geologic cycle for
the formation of soil, is
A. Upheavel-- >transportation -4 deposition ->
weathering
B. Weathering ?> upheaval -4 transportation - >
deposition
C. Transportation>upheaval ?> weathering -->
deposition
D. Weathering --> transportation ---> deposition -->
upheaval
Answer => D
4. Chemical weathering
of soil is caused due to
A. oxidation
B. carbonation
C. hydration
D. all the above.
Answer => D
5. Transporting and
redepositing soils, is done by
A. water
B. glacier
C. gravity
D. all the above.
Answer => D
6. Water formed
transported soil is
A. alluvial
B. marine
C.lacustrine
D. loess.
Answer => A
7. 'Talus' is the soil
transported by
A. wind
B. water
C. glacier
D. gravitational force.
Answer => D
8. 'Loess' is silty-clay formed by the action of
A. water
B. glacier
C. wind
D. gravitational force.
Answer => C
9. 'Drift' is the material picked up, mixed, disintegrated,
transported and redeposited by
A. wind
B. gravitational force
C. glaciated water
D. all the above.
Answer => C
10. Pick up the correct statement from the following :
A. The void space between the soil grains, is filled partly
with air and partly with water
B. In perfectly saturated soil, the voids are completely
filled ivith water
C. In dry soil, the voids are completely filled with air
D. all the above.
Answer => D
11. Cohesionless soil is
A. sand
B. silt
C. clay
D. clay and silt.
Answer => A
12. The soil which contains finest grain particles, is
A. coarse sand
B. fine sand
C. silt
D. clay.
Answer => D
13. Fine sand possesses
A. good plasticity
B. limited plasticity
C. reasonable plasticity
D. clay.
Answer => D
14. Minimum size of
the particles of silt soil, is
A. 0.002 mm
B. 0.04 mm
C. 0.06 mm
D. 0.08 mm
Answer => A
15. Maximum size of clay particles, is :
A. 0.002 mm
B. 0.04 mm
C. 0.06 mm
D. 0.08 mm
Answer => A
16. The water content of soil is defined as the ratio of
A. volume of water to volume of given soil
B. volume of water to volume of voids in soil
C. weight of water to weight of air in voids
D. weight of water to weight of solids of given mass of soil.
Answer => D
17. Water content of a soil sample is the difference of the weight
of the given sample at the given temperature and the weight determined after
drying it for 24 hours at temperature ranging from
A. 80? to 90?C
B. 90? to 95?C
C. 95? to 100?C
D. 105? to 110?C.
Answer => D
18. Buoyant unit
weight equals the saturated density
A. multiplied by unit weight of water
B. divided by unit weight of)water
C. plus unit weight of water
D. minus unit weight of water.
Answer => D
19. According to the Indian Standards the specific gravity is
the ratio of the unit weight of soil solids to that of water at a temperature
of
A. 17?C
B. 23?C
C. 27?C
D. 30?.
Answer => C
20. The ratio of the
volume of voids to the volume of soil solids in a given soil mass, is known
A. porosity
B. specific gravity
C. void ratio
D. water content.
Answer => C
21. The ratio of the
volume of voids to the total volume of the given soil mass, is known
A. porosity
B. specific gravity
C. void ratio
D. water content.
Answer => A
22. The ratio of the
weight of water to the weight of solids in a given mass of soil, is known
A. porosity
B. specific gravity
C. void ratio
D. water content.
Answer => B
23. The ratio of the
weight of given volume of soil solids to the weight of an equal volume of
distilled water at the given temperature, is known
A. porosity
B. specific gravity
C. void ratio
D. water content.
Answer => C
24. 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.
Answer => D
25. The ratio of volume of air voids to the volume of total
voids, is known as
A. air content
B. percentage air voids
C. percentage voids
D. porosity.
Answer => A
26. The ratio of the
difference between the void ratio of the soil in its loosest state and its natural
void ratio (e) to the difference between the void ratios in the loosest and
fully dense state, is generally termed as
A. degree of density
B. relativity
C. density index
D. all the above.
Answer => D
27. 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
A.25%
B.40%
C.60%
D. 75%.
Answer => D
28. An unsaturated 100
cm3 sample of soil weighs 190g. If its dried weight is 160 g, water content of
the soil, is
A.0.188
B.0.288
C.0.388
D.0.488
Answer => A
29. Degree of saturation of a natural soil deposit having
water content 15%, specific gravity 2.50 and void ratio 0.05, is
A.50%
B.. 60%
C.75%
D. 80%.
Answer => C
30. A soil has bulk density 2.30 g/cm3 and water content 15
per cent, the dry density of the sample, is
A. 1.0 Wcm2
B. 1.5 g/cm3
C. 2.0 g/cm3
D. 2.5 g/cm3.
Answer => C
31. Accurate determination of water content, is made by
A. calcium carbide method
B. sand bath method
C. alcohol method
D. oven-drying method.
Answer => D
32. Determination of
water content of a soil sample suspected to contain gypsum is made by drying
the sample for longer period at a temperature not more than
A. 60?C
B. 80?C
C. 100?C
D. 110?C.
Answer => B
33. A pycnometer is used to determine
A. voids ratio.
B. dry density
C. water content
D. density index.
Answer => C
34. Pick up the
correct statement from the following :
A. The void ratio in soils is defined as the ratio of the
volume of voids to the volume of solids
B. The porosity of a soil is defined as the ratio of the
volume of voids to the gross volume of the soil
C. The bulk density of a soil is defined as the unit weight
of the soil
D. All the above.
Answer => D
35. The specific
gravity of sands is approximately
A.1.6
B.2
C.2.2
D. 2.6.
Answer => D
36. 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
Answer => D
37. Pick up the correct statement from the following :
A. In soils, the flow index indicates variation in shear
strength with water content
B. Liquid limit minus plastic limit, is known as plasticity
index of the soil
C. Liquid limit minus shrinkage limit, is known as shrinkage
index of the soil
D. All the above.
Answer => D
38. The liquid limit
and plastic limit exist in
A. sandy soils
B. silty soils
C.gravel soils
D. clay soils.
Answer => D
39. You are given a
sample of soil containing coarse grains to determine its water content, you
will use
A. pycnometer
B. oven-drying method
C. calcium carbide method
D. alcohol method.
Answer => A
40. The weight of a pycnometer containing 400 g sand and
water full to the top is 2150 g. The weight of pycnometer full of clean water
is 1950 g. If specific gravity of the soil is 2.5, the water content is
A.5%
B.10%
C.15%
D. 20%.
Answer => D
41. 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
A.1
B.1.5
C.2
D. 2.5.
Answer => C
42. Stoke's law sates that the velocity at which a grain
settles out of suspension, the other factors remaining constant, is dependent
upon
A. shape of grain
B. weight of grain
C. size of grain
D. shape, size and weight of grain.
Answer => D
43. A suspended
particle falls through a height // cm in water in t minutes. If the viscosity
of water is 11 and specific gravity of the particle is G, the diameter of the
particle is, where M is a constant factor.
A. 103Ma
B. 10-M
C. 105M I -4
D. 102M fr-
Answer => C
44. Sedimentation
analysis is based on the assumption :
A. soil particles are spherical
B. particles settle independent of other particles
C. walls of the jar do not affect the settlement
D. all the above.
Answer => D
45. 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.
Answer => A
46. According to IS :
2720 ? 1965, the composition of a dispersing solution used in pipette analysis
for determining the size of particles, is
A. sodium-hexametaphosphate 33 g, sodium carbonate 7 g and
distilled water one litre
B. sodium-hexametaphosphate 7 g, sodium carbonate 33 g and
distilled water one litre
C. sodium-hexametaphosphate 23 g, sodium carbonate 17 g and
distilled water one litre
D. none of these.
Answer => A
47. Pick up the
correct statement from the following :
A. In hydrometer method, weight Wd per ml of suspension is
found directly
B. In pipette analysis, weight Wd per ml of suspension is
found indirectly
C. In pipette analysis, weight Wd per ml of suspension is
found directly.
D. None of these.
Answer => C
48. Hydrometer readings are corrected for :
A. temperature correction
B. meniscus correction
C. dispersing agent correction
D. temperature, meniscus and dispersing agent corrections.
Answer => D
49. The coefficient of
curvature for a well graded soil, must be between
A. 0.5 to 1.0
B. 1.0 to 3.0
C. 3.0 to 4.0
D. 4.0 to 5.0.
Answer => B
50. The minimum water content at which the soil just begins
to crumble when rolled into threads 3 mm in diameter, is known
A. liquid limit
B. plastic limit
C. shrinkage limit
D. permeability limit.
Answer => B
51. The minimum water
content at which the soil retains its liquid state and also possesses a small
shearing strength anginst flowing, is known
A. liquid limit
B. plastic limit
C. shrinkage limit
D. permeability limit.
Answer => A
52. 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.
Answer => C
53. The plasticity index is the numerical difference between
A. liquid limit and plastic limit
B. plastic limit and shrinkage limit
C. liquid limit and shrinkage limit
D. none of these.
Answer => A
54. The preperty of a soil which allows it to be deformed
rapidly without rupture, elastic rebound and also a volume change, is known
A. porosity
B. plasticity
C. permeability
D. ductility.
Answer => B
55. The consistency index of a soil is defined as the ratio
of
A. liquid limit plus the natural water content to the
plasticity index of the soil
B. liquid limit minus the natural water content to the
plasticity index of the soil
C. natural water content of a soil minus plastic limit to the
plasticity index of the soil
D. natural water content of a soil plus its plastic limit to
the plasticity index of the soil.
Answer => B
56. The liquidity index is defined as a ratib expressed as
percentage of
A. plastic limit minus the natural water content, to its
plasticity index
B. natural water content minus its plastic limit to its
plasticity index
C. natural water content plus its plastic limit to its
plasticity index
D. liquid limit minus the natural water content to the
plasticity index.
Answer => B
57. Pick up the correct statement from the following :
A. The object of classifying soils is to arrange them into
groups according to their properties and behavior
B. A soil classification system is meant to provide an
accepted and systematic method of describing the various types of soils
eliminating personal factors
C. The first category of soil classification is based on
grain size of the snil
D. All the above.
Answer => D
58. For general
engineering purposes, soils are classified by
A. particle size classification system
B. textural classification system
C. High Way Research Board (HRB), classification system
D. unified soil classification system.
Answer => D
59. Soil classification
of composite soils, exclusively based on the particle size distribution, is
known
A. particle classification
B. textural classification
C. High Way Research Board classification
D. unified soil classification.
Answer => B
60. Soils containing organic
matters
A. are of spongy nature
B. swell with decrease of moisture
C. shrink with increase of moisture content
D. none of these.
Answer => A
61. Pick up the
correct statement from the following :
A. A soil having pH value more than 7 is an acidic soil
B. A soil having pH value less than 7 is an acidic soil
C. A soil having pII value more than 7 is an alkaline soil
D. A soil containing chemicals for the manufacture of
porfland cement is preferred.
Answer => B
62. Which one of the
following statements is true ?
A. Clays are more porous than sands
B. Pressure of organic matter in a soil decreases the bearing
capacity of the soil
C. Aluminous cement is used for foundations in soils with
chemical deposits
D. All the above.
Answer => D
63. The change of moisture content of soils, changes the
A. value of the angle of repose
B. amount of compaction required
C. cohesive strength of soil
D. all the above.
Answer => D
64. The soil moisture driven off by heat, is called
A. free water
B. hydroscopic water
C. gravity water
D. none of these.
Answer => B
65. 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.
Answer => B
66. The property of a soil which permits water to percolate
through it, is called
A. moisture content
B. permeability
C. capillarity
D. none of these.
Answer => B
67. The capillary rise of water
A. depends upon the force responsible
B.increases as the size of the soil particles increases
C. decreases as the size of the soil particles decreases
D. is less in wet soil than in dry soil.
Answer => A
68. The internal
molecular attraction,of a soil, the cohesion
A. decreases as the moisture content increases
B. increases as the moisture content decreases
C. is more in well compacted clays
D. depends upon the external applied load.
Answer => A
69. The bearing capacity of a soil depends upon
A. size of the particles
B.shape of the particles
C. cohesive properties of particles
D. all the above.
Answer => D
70. 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
A. quick condition
B. boiling condition
C. quick sand
D. all the above.
Answer => D
71. A coarse-grained soil has a voids ratio 0.75, and
specific gravity as 2.75. The critical gradient at which quick sand condition
occurs, is
A.0.25
B.0.5
C.0.75
D. 1.00.
Answer => D
72. A critical
hydraulic gradient may occur when
A. flow is in upward direction
B. seepage pressure is in upward direction
C. effective pressure is zero
D. all the above.
Answer => D
73. Darcy's law is applicable to seepage if a soil is
A. homogeneous
B. isotropic
C. incompressible
D. all the above.
Answer => D
74. During seepage through a soil, direction of seepage is
always
A. parallel to equipotential lines
B. perpendicular to stream lines
C. perpendicular to equipotential lines
D. none of these.
Answer => C
75. If there is no
impervious boundary at the bottom of a hydraulic structure, stream lines tend to
follow :
A. a straight line
B. a parabola
C. a semi-ellipse
D. a semi-circle.
Answer => C
76. The quantity of seepage of water through soils is
proportional to
A. coefficient of permeability of soil
B. total head loss through the soil
C. neither A nor (b)
D. both (a) and (b).
Answer => D
77. The seepage force in a soil, is
A. perpendicular to the equipotential lines
B. proportional to the exit gradient
C. proportional to the head loss
D. all the above.
Answer => D
78. The seepage exit
gradient in a soil is the ratio of
A. total head to the length of seepage
B. flow line to slope
C. head upstream to that at downstream
D. head loss to the length of the seepage
Answer => D
79. The critical exist gradient of seepage water in soils,
increases with
A. an increase in specific gravity
B. a decrease in specific gravity
C. a decrease in void ratio
D. both (a) and (c)
Answer => D
80. The critical exist
gradient of seepage water in soils, is
A. directly proportional to the voids ratio
B. inversely proportional to the specific gravity
C. directly proportional to the specific gravity
D. none of these.
Answer => D
81. 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 now through it
D. for homogeneous soil, the curves are smooth and circular.
Answer => A
82. A flow net may be utilised for the determination of
A. exit gradient
B. seepage
C. hydrostatic pressure
D. seepage pressure
Answer => D
83. A phreatic line is
defined as the line within a dam section below which there are
A. positive equipotential lines
B. positive hydrostatic pressure
C. negative hydrostatic pressure
D. negative equipotential lines
Answer => B
84. The phreatic line in an earth dam may be
A. circular
B. elliptical
C. parabolic
D. a straight line
Answer => A
85. For a homogeneous
earth dam 50 m high having 2 m free broad, a flow net was constructed and the
results were : Number of potential drops = 2.4 Number of flow channels =- 0.4.
If coefficiency of permeability of the dam mateiral is 3 x 10-3 cm3/sec, the
discharge per metre length of dam, is
A. 12 x 10- -5 m3/sec
B. 24 x 10-3 m3/sec
C. 6 x 10-5 m3/sec
D. 24 x 10-5 m3/sec.
Answer => D
86. The shear resistance of a soil is contituted basically of
the following component.
A. The frictional resistance to translocation between the
individual soil particles at their contact point
B. To the structural relation to displacement of the soil
because of the interlocking of the particles
C. Cohesion and adhesion between the surfaces of the soil
particles
D. All the above.
Answer => D
87. The shear strength
in plastic undrained clay, is due to
A. inter-granular friction
B. internal friction
C. cohesion
D. none of these.
Answer => C
88. 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
A.1
B.2
C.3
D.4
Answer => A
89. Through a point in
a loaded soil, the principal stress is maximum on
A. minor principal plane
B. intermediate principal plane
C. major principal plane
D. none of these.
Answer => C
90. The maximum shear stress occurs on the filament which
makes an angle with the horizontal plane equal to
A. 30?
B. 45?
C. 60?
D. 90?.
Answer => B
91. The Mohr's
straight theory is based on the following fact :
A. Material fails essentinlly by shear
B. Ultimate strength of the material is determined by the
stress in the plane of slip
C. Failure criterion is independent of the intermediate
principal stress
D. All the above.
Answer => D
92. 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
B. The generalised Mohr theory suggests that, though the
shear stress depends on the normal stress, the relation is not linear
C. Coulomb and Mohr suggest that a definite relationship
exists among the principal stress and the angle of internal friction
D. All the above.
Answer => D
93. Depending upon the properties of a material, the failure
envelope may
A. be either straight or curved
B. pass through the origin of stress
C. intersect the shear stress axis
D. all the above.
Answer => D
94. 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 settlemement.
Answer => B
95. The compression index of a soil
A. decreases with an increase in the liquid limit
B. increases with an increase in the liquid limit
C. decreases with an increase in the plastic limit
D. is not related with plastic limit
Answer => B
96. The ultimate
settlement of a soil is directly proportional `to :
A. depth of the compressible soil strata
B. compressive index
C. void ratio
D. both (a) and (b)
Answer => D
97. The neutral stress in a soil mass is
A. force per neutral area
B. force per effective area
C.stess taken up by the pore water
D. stress taken up by solid particles.
Answer => C
98. The shear strength of a soil
A. increases with an increase in the normal stress
B. is proportional to the cohesion of the soil
C. is generally known as the strength of the soil
D. is proportional to the tangent of the angle of internal
friction
Answer => D
99. Pick up the correct statement from the following :
A. Failure plane carries maximum shear stress
B. Failure plane does not carry maximum shear stress
C. Failure plane carries shear stress equal to maximum shear
stress
D. None of these.
Answer => B
100. The angle between the directions of the failure and the
major principal plane, is equal to
A. 900 + effective angle of shearing resistance
B. 90? + half of the angle of shearing resistance
C. 45? - half of the angle of shearing resistance
D. 45? + half of the angle of shearing resistance.
Answer => D
101. 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
A. quick test
B. drained test
C. consolidated undrained test
D. none of these.
Answer => B
102. When drainage is permitted under initially applied
normal stress only and full primarily consolidation is allowed to take place,
the test is known as
A. quick test
B. drained test
C. consolidated undrained test
D. none of these.
Answer => C
103. A direct shear
test possesses the following disadvantage:
A. A relatively thin thickness of sample permits quick
drainage
B. A relatively thin thickness of sample permits quick
dissipation of pore pressure developed during the test
C. As the test progresses the area under shear, gradually
changes
D. none of these.
Answer => C
104. A triaxial shear
test is prefered to direct shear test, because
A. it can be performed under all three driange conditions
with complete control
B. precise measurement of pore pressure and change in volume
during test, is not possible
C. stress distribution on the failure plane, is non uniform
D. none of these.
Answer => A
105. For shear strength, triaxial shear test is suitable
because
A. it can be performed under all three drainage conditions
B. precise measurement of the pore pressure and volume change
during the test is possible
C. stress distribution on the failure plane, is uniform
D. all the above.
Answer => D
106. Pick up the correct statement from the following :
A. An unconfined compression test is a special case of
triaxial compression test
B. An unconfined compression test is a special case of direct
shear test
C. The confining pressure is maximum during an unconfined
compression test
D. The cylindrical specimen of a soil is subjected to major
principal stress till it fails due to shearing along the plane of the failure.
Answer => A
107. For testing a saturated clay for shear strength, the
test recommended, is
A. direct shear test
B. triaxial compression test
C. unconfined compression test
D. all the above.
Answer => C
108. On wetting, cohesive soils,
A. loose permeability
B. gain shear strength
C. loose elasticity
D. decrease their shear strength.
Answer => D
109. Cohesive soils
are generally
A. plastic and also compressible
B. elastic and also compressible
C. plastic but incompressible
D. none of these.
Answer => A
110. The angle of internal friction of clays, is usually
A. 0? to 5?
B. 5? to 20?
C. 20? to 30?
D. 30? to 45?.
Answer => B
111. The angle of
internal friction is maxi-mum for
A. angular-grained loose sand
B. angular-grained dense sand
C. round-grained dense sand
D. round-grained loose sand
Answer => B
112. 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.
Answer => D
113. A soil mass is
said to be in plastic equilibrium if
A. t is stressed to maximum
B. it is on the verge of failure
C. it is in plastic stage
D. it starts flowing
Answer => B
114. In active state
of plastic equilibrium in a non cohesive soil with horizontal ground surface
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
horizontal.
Answer => C
115. 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.
Answer => B
116. A failure wedge develops if a retaining wall
A. moves away from the backfill
B. moves towards the backfill
C. sinks downwards
D. stresses equally by vertical and horizontal forces.
Answer => A
117. 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 the above.
Answer => D
118. If the back fill
is hairing a uniform surcharge of intensity q per unit area, the lateral
pressure will be
A. q times the lateral pressure within the surface
B. 1/q times the lateral pressure within the surface
C. equal to a fill of height Z equal to q I r, where r is the
density of the backfill
D. none of these.
Answer => C
119. Back fill with a sloping surface exerts a total active
pressure Pa on the wall of height H and acts at
A. H/4 above the base parallel to base
B. HI2 above the base parallel to base
C. 1113 above the base parallel to base
D../1/5 above the base parallel to base.
Answer => C
120. Pick up the
correct definition from the following :
A. The lateral pressure exerted by the soil when the
retaining wall moves away from the backfill, is generally known as active earth
pressure of the soil
B. The lateral pressure exerted by the soil when the
retaining wall moves towards the soil, is generally known as 'Passive earth
pressure of the soil'
C. The lateral pressure exerted by the soil when the
retaining wall has no movement relative to the back fill, is known as 'earth
pressure at rest of the soil'
D. All the above.
Answer => D
121. The lateral earth
pressure on a retaining wall
A. is equal to mass of the soil retained
B. proportional to the depth of the soil
C. proportional to the square of the depth of the soil
D. proportional to the internal friction of the soil
Answer => D
122. The active earth pressure of a soil is proportional to
where 0 is the angle of friction of the soil where 0 is the angle of friction
of the soil..
A. tan (45? - 0)
B. tan2 (45? + a)
C. tan2 (45? -0)
D. tan (45? + (b)
Answer => B
123. The passive earth
pressure of a soil, is proportional to, where 0 is the angle of internal
friction of the soil
A. tan (45? -
B. tan (45? + 0)
C. tan2 (45? - 0)
D. tan2 (45? +
Answer => D
124. The earth
pressure of a soil at rest, is proportional to, where 0 is the angle of
internal friction of the soil.
A. tan (45? - 0)
B. tan (45? + 0)
C. tan2 (45? - 0)
D. none of these
Answer => D
125. The intensity of
active earth pressure at a depth of 10 metres in dry cohesionless sand with an
angle of internal friction of 30? and with a weight of 1.8 t/m3, is
A. 4 t/m2
B. 5 t/m2
C. 6 t/m2
D. 7 t/m2
Answer => C
126. if the
coefficient of the active pressure Kp is the coefficient of passive pressure Km
is
A. 1/3
B. 2/3
C.1
D.3
Answer => D
127. 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.
Answer => A
128. Coulomb's wedge
theory assumes that
A. back fill is dry, cohesionless, homogeneous and isotropic
B. slip surface is the plane which passes through the heel of
the wall
C. sliding wedge itself acts as a rigid body and the value of
earth pressure is obtained by considering the limiting equilibrium of the wedge
D. all the above.
Answer => D
129. A plane inclined
at an angle to the horizontal at which the soil is expected to stay in the
absence of any lateral support, is known as
A. natural slope line
B. repose line
C. the (1) line
D. all the above.
Answer => D
130. The slip at
critical angle, is generally known
A. 8 1-line
B. rupture plane
C. slip plane
D. all the above.
Answer => D
131. Failure of the
stability of slopes, generally occurs along
A. slip plane
B. a horizontal surface
C. a curved surface
D. all the surfaces.
Answer => C
132. Factor of safety
against sliding of a slope, is the ratio of
A. actual cohesion to that required to maintain stability of
slope
B. shear strength to shear stress along the surface
C. neither A nor (b)
D. both (a) and (b).
Answer => D
133. F or slopes of limited extent the surface of slippage,
is usually along
A. a parabolic arc
B. an elliptical arc
C. a straight line
D. a circular arc.
Answer => D
134. The shearing force
acting along the slice of a curved surface of slippage, causes the soil to
slide
A. down at the centre
B. down at the toe
C. upward at the centre
D. none of these.
Answer => A
135. Failure of a
slope occurs only when total shear force is
A. equal to total shearing strength
B. greater than total shearing strength
C. less than total shearing strength
D. none of these.
Answer => B
136. If S, L and R are the arc length, long chord and radius
of the sliding circle then the perpendicular distance of the line of the
resultant cohesive force, is given by
A.a=SR/L
B. a= LS/R
C. a=LR/S
D. none of these.
Answer => A
137. 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.
Answer => D
138. The method of the slices is applicable to
A. homogenous soils
B. stratified soils
C. saturated soils
D. non-uniform slopes
Answer => A
139. 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 1/3rd 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
Answer => D
140. If the cohesive
force, (c), is 1.5 t/m2, the density (y) of the soil is 2.0 t/m3, factor of
safety (F) is 1.5 and stability factor (SO is 0.05, the safe height of the
slope, is
A. 5 metrets
B. 8 metres
C. 10 metres
D. 12 metres.
Answer => C
141. For a clay slope
of height of 10 m, the stability number is 0.05,7 = 2.0 t/m3, C = 2.5 t/m2, the
critical height of the slope of the soil, is
A. 4.0 m
B. 12.5 m
C. 25.0 m
D. 15.0 in.
Answer => A
142. The compression
resulting from a long term static load and consequent escape of pore water, is
known as
A. compaction
B. consolidation
C. swelling
D. none of these.
Answer => B
143. Compression of
soil occurs rapidly if voids are filled ?with
A. air
B. water
C. partly with air and partly with water
D. none of these.
Answer => A
144. The
compressibility of clays, is caused due to :
A. expulsion of double layer water from in between the grains
B. sliping of particles to new positions of greater density
C. bending of particles as elastic sheets
D. all the above.
Answer => D
145. The pressure that
builds up in pore water due to load increment on the soil, is termed
A. excess pore pressure
B. excess hydrostatic pressure
C. hydrodynamic pressure
D. all the above.
Answer => D
146. The reduction in
volume of soil due to squeezing out of water from the voids, is termed
A. primary consolidation
B. primary compression
C. primary time effect
D. all the above.
Answer => D
147. A clay subjected
to pressure in excess to its present over-burden, is said to be
A. pre-compressed
B. pre-consolidated
C. over-consolidated
D. all the above.
Answer => D
148. A soil not fully
consolidated under the existing overburden pressure, is called
A. pre-consolidated
B. normally consolidated
C. over-consolidated
D. none of these.
Answer => C
149. Tergazhi's theory
of one dimensional consolidation assumes
A. soil is homogeneous and fully saturated
B. water and soil particles are incompressible
C. deformation of the soil, is entirely due to change in
volume
D. all the above.
Answer => D
150. Tergazhi's theory
of one dimensional consolidation assumes
A. load is applied in one direction coefficient of
permeability is constant
B. excess pore water drains out only in the vertical
direction
C. time lag in consolidation is due entirely to permeability
D. all the above.
Answer => D
151. The ratio of
settlement at any time `C to the final settlement, is known as
A. co-efficient of consolidation
B. degree of consolidation
C. consolidation index
D. consolidation of undisturbed soil.
Answer => B
152. Pick up the
correct statement from the following :
A. When stress decreases, void ratio decreases
B. When stress decreases, coefficient of permeability
decreases
C. When stress decreases, coefficient of volume change
decreases
D. When stress decreases void ratio, co-efficients of
permeability and volume change decrease.
Answer => D
153. The maximum
pressure which a soil can carry without shear failure, is called
A. safe bearing capacity
B. net safe bearing capacity
C. net ultimate bearing capacity
D. ultimate bearing capacity.
Answer => A
154. The maximum net
pressure intensity causing shear failure of soil, is known
A. safe bearing capacity
B. net safe bearing capacity
C. net ultimate bearing capacity
D. ultimate bearing capacity.
Answer => C
155. Terzaghi's
analysis assumes :
A. soil is homogeneous and isotropic
B. elastic zone has straight boundaries inclined at NI = q to
the horizontal and plastic zones fully developed
C. failure zones do not extend above the horizontal plane
through the base of the footing
D. all the above.
Answer => D
156. The Terzaghi's
general bearing capacity equation for a continuous footing is given by where N,
Nb and Ny are bearing capacity factors.
A. qf = cNc + yDNq + 0.5yBNy
B. qf = cNc ? yDNq + 0.5yBNy
C. qf = cNc ? yDN + 0.5yBNy
D. qf = cNc + yDN + 0.5yBNy
Answer => A
157. Pick up the
correct statement from the following :
A. If the ratio of depth to width is less than 2, it is
shallow foundation
B. If the ratio of depth to width is more than 2, it is deep
foundation
C. If the ratio of the length to width is between 1 and 2, it
is spread foundation
D. All the above.
Answer => D
158. The ultimate
bearing capacity of a soil, is
A. total load on the bearing area
B. safe load on the bearing area
C. load at which soil fails
D. load at which soil consolidates.
Answer => C
159. The minimum depth
of building foundations on
A. sandy soils is 80 cm to 100 cm
B. clay soils is 90 cm to 160 cm
C. rocky soils is 5 cm to 50 cm
D. all the above.
Answer => D
160. If L and B are
the length and breadth of a footing, e the eccentricity along the length and P
and Q are the axial force and bearing capacity of the soil, then, to avoid
tension,
A. is provided for heavily loaded isolated columns
B. is treated as spread foundation
C. consists of two sets of perpendicularly placed steel beams
D. all the above.
Answer => A
162. Pile foundations
are generally preferred to for
A. bridge foundations
B. sky scrapper buildings
C. residential buildings
D. runways.
Answer => B
164. The minimum
centre to centre distance of friction piles of 1 m diameter, is
A. 2 m
B. 2 m to 3 m
C. 3 m to 4 m
D. 5 m.
Answer => A
165. Negative skin
friction on piles
A. is caused due to relative settlement of the soil
B. is caused in soft clays
C. decreases the pile capacity
D. all of the above.
Answer => D
166. Under-reamed
piles are generally
A. driven piles
B. board piles
C. precast piles
D. all the above.
Answer => B
167. Pick up the
correct statement from the following :
A. When water table is above the base of a footing, the dry
weight (1) should be used for soil below water table
B. When water table is located somewhat below the base of a
footing, the elastic wedge is partly of moist soil and partly of submerged
soil, and a suitable reduction factor is used
C. When water table is just at the base of the footing, no
reduction factor is used
D. None of these.
Answer => B
168. The maximum load
carried by a pile, when it continues to sink without further increase of load,
is known as
A. ultimate load carrying capacity
B. ultimate bearing capacity
C. ultimate bearing resistant
D. all the above.
Answer => D
169. A pile is being
driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If
the penetration with last blow is 5 mm, the load carrying capacity of the pile,
according to the Engineering News formula, is
A. 100 tonnes
B. 50 tonnes
C. 20 tonnes
D. 10 tonnes.
Answer => D
170. For determining
the ultimate bearing capacity of soil, the recommended size of a square bearing
plate to be used in load plate test should be 30 to 75 cm square with a minimum
thickness of
A. 5 mm
B. 10 mm
C. 15 mm
D. 25 mm.
Answer => D
171. Pick up the
correct statement applicable to plate load test
A. Width of the test pit for plate load test is made five
times the width of the plate
B. At the centre of the test pit, a hole is dug out whose
size is kept equal to the size of the test plate
C. Bottom level of the hole dug at the centre of the test
pit, is kept at the level of the actual formation
D. All the above.
Answer => D
172. In a grain size
analysis of soil, the gain size values and the corresponding percentage finer
obtained are give below : (Grain size(mm)-Percent
finer)(4.75-100)(2.00-82)(1.00-60)(0.50-44)(0.15-22)(0.075-10)(0.053-5) The
uniformity coefficient of the soil, is
A.6.66
B.13.33
C.33.33
D. none of these.
Answer => A
173. 260 g of wet soil was taken in a pycnometer jar of
weight 400 g in order to find the moisture content in the soil, with specific
gravity of soil particles 2.75. The weight of soil and remaining water filled
in pycnometer without air bubbles was 1415 g and the weight of pycnometer
filled with water alone was 1275 g. The moisture content in the soil is
A.24.20%
B.18.20%
C.53.80%
D. none of these.
Answer => B
174. A compacted soil sample using 10% moisture content has a
weight of 200 g and mass unit weight of 2.0 g/cm3. If the specific gravity of
soil particles and water are 2.7 and 1.0, the degree of saturation of the soil
is
A.11.10%
B.55.60%
C.69.60%
D. none of these.
Answer => A
175. 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/cmd, is
A.1.47
B.1.82
C.1.91
D. none of these.
Answer => D
176. A soil sample has
passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The
group index of the soil, is
A.5
B.20
C.40
D. none of these.
Answer => D
177. 1n a liquid limit test, the moisture content at 10 blows
was 70% and that at 100 blows was 20%. The liquid limit of the soil, is
A.35%
B.50%
C.65%
D. none of these.
Answer => C
178. A saturated soil sample has water content of 40% and
specific gravity of soil particles 2.7. The void ratio of the soil, is
A.0.4
B., 0.52
C.1.08
D. none of these.
Answer => B
179. 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.20%
B.77%
C.93%
D. none of these.
Answer => A
180. Pick up the
correct statement from the following :
A. Sandy clayloam contains highest percentage of sand
B. Siltyclayloam contains highest percentage of silt
C. Stiff boulder clay offers maximum shear strength
D. Soft chalk carries least safe load
Answer => B
181. Pick up the cohesive soil from the following :
A. Red earth
B. Clay
C. Black cotton soil
D. Compacted ground.
Answer => C
182. For determining
the moisture content of a soil sample, the following data is available Weight
of container= 260 g, Weight of soil sample and container= 320 g,Weight of soil
sample (dried) & container= 310 g The moisture content of the soil sample,
is
A.15%
B.18%
C.20%
D. 25%.
Answer => C
183. For determing the
specific gravity of soil solids, using a pycnometer of 500 cc., the following
data is available :Weight of dry empty pycnometer= 125 g,Weight of dried soil
and pycnometer= 500 g,Weight of dried soil and distilled= 850 g-water filled in
pycnometer up to top The specific gravity of soil soilds, is
A.2
B.2.25
C.2.5
D. 2.75.
Answer => C
184. If the specific
gravity of a soil particle of 0.05 cm diameter is 2.67, its terminal velocity
while settling in distilled water of viscosity, 0.01 poise, is
A. 0.2200 cm/sec
B. 0.2225 cm/sec
C. 0.2250 cm/sec
D. 0.2275 cm/sec
Answer => D
185. Plasticity index
is defined as the range of water content between
A. liquid and plastic limit
B. plastic limit and semi solid limit
C. semi-solid limit and liquid limit
D. liquid limit and solid limit.
Answer => A
186. Pick up the
correct statement from the following :
A. The range of water content between the liquid limit and
plastic limit, is called plasticity index.
B. The ratio of the liquid limit minus the natural water content
to the plasticity index of soils, is called consistency index
C. The ratio of natural water content minus its plastic limit
to its plasticity index is called liquidity index
D. The ratio between plasticity index and flow index (i.e.
slope of flow curve in case of liquid limit), is called toughness index
Answer => D
187. The water content
in a soil sample when it continues to loose weight without loosing the volume,
is called
A. Shrinkage limit
B. Plastic limit
C. liquid limit
D. semi-solid limit.
Answer => A
188. 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
A.0.858
B.0.86
C.0.862
D. 0.864.
Answer => C
189. The porosity cf
the soil sample stated as . A soil sample of mass specific gravity 1.92, has a
moisture content 30%. If the specific gravity of solids is 2.75 is
A.44.30%
B.45.30%
C.46.30%
D. 47.3%.
Answer => C
190. The degree of
saturation of the soil sample stated in Q. No. 213, is
A.95.40%
B.95.50%
C.95.60%
D. 95.7%.
Answer => D
191. If dry density,
water density and specific gravity of solids of a given soil sample are 1.6
glee, 1.84 g/cc and 2.56 respectively, the porosity of the soil sample, is
A.0.375
B.0.37
C.0.38
D. 0.390.
Answer => A
192. If dry density,
water density and specific gravity of solids of a given soil sample are 1.6
glee, 1.84 g/cc and 2.56 respectively, The void ratio of the soil sample is
A.0.4
B.0.5
C.0.6
D. 0.75.
Answer => A
193. If dry density,
water density and specific gravity of solids of a given soil sample are 1.6
glee, 1.84 g/cc and 2.56 respectively, The degree of saturation of the soil
sample stated, is
A.60%
B.62%
C.64%
D. 66%.
Answer => C
194. If the natural
moisture content, the liquid limit and plastic limit of a soil sample are
stated as 30.5%, 42.5% and 22.5% respectively , the ratio of liquidity index
and plastic index, is '(a) -3(c) 2
A.
B.
C.
D.
Answer => D
195. The clay soil
mainly consists of
A. Kaolinites
B. Montomorillonite
C. Elites
D. All the above.
Answer => D
196. Pick up the
correct statement from the following :
A. Kaolinite is most stable clay
B. Kaolinite shows a very little sign of swelling on wetting
C. Kaolinite when wet, becomes moderately plastic because
negative electro magnetic charges on platelets attrack water
D. All the above.
Answer => D
197. Pick up the
in-correct statement from the following: The soils which contain
montmorillonite minerals
A. swell more when wet
B. shrink more when dry
C. possess high plasticity
D. possess high coefficient of internal coefficient
Answer => D
198. Pick up the correct statement from the following :
A. Illite bond is weaker than Kaolinite bond
B. Mite bond is stronger than montmorillonite bond
C. Illites do not swell when wet
D. All the above.
Answer => D
199. Pick up the clay
soil group which does not swell when wet from the following :
A. Kaolinite group
B. Illite group
C. Vermiculite group
D. Montrorillonite group.
Answer => B
200. Pick up the
correct statement from the following.:
A. The phenomenon of quicksand generally occurs in the
cohesionless soil
B. At critical hydraulic gradient, the saturated sand becomes
quick
C. The critical gradient depends on the void ratio and/the
specific gravity
D. All the above.
Answer => D
201. Flow net is used
for the determination of
A. quantity of seepage
B. hydrostatic pressure
C. seepage pressure
D. all the above.
Answer => D
202. If the unit
weight of sand particles is 2.696 glee. 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.
Answer => D
203. The density of
soil can be increased
A. by reducing the space occupied by air
B. by elastic compression of soil grains
C. by expelling water from pores
D. All the above.
Answer => D
204. Pick up the
correct statement from the following :
A. O.M.C. refers to the moisture corresponding to the maximum
point on the moisture content dry density curve
B. The line which shows moisture content dry density relation
for soil containing a constant percentage of air voids, is known as air void
line
C. The weight of hammer used for compaction test is 25 kg
D. All the above.
Answer => D
205. The factor which
affects the compaction, is
A. moisture content
B. compacting content
C. method of compaction
D. All the above.
Answer => D
206. Pick up the
correct statement from the following :
A. The dry density reduces by addition of water after
attaining optimum moisture content
B. The line joining the peak of three moisture content graphs
obtained by using three compactive energies, is called line of optimus
C. Well graded coarse grained soils can be compacted to a
very high density as compared to fine grained soils
D. All the above.
Answer => D
207. Pick up the
incorrect statement from the following :
A. Compaction has no effect on the structure of a soil
B. Permeability decreases with increase in the dry density of
a compacted soil
C. A wet side compacted soil is more compressible than a dry
side compacted soil
D. Dry side compaction soils swell more when given access to
moisture
Answer => A
208. 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. 0.70.
Answer => B
209. 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
A.3233
B.3123
C.33331
D.3313
Answer => A
210. Pick up the
correct statement from the following :
A. Coefficient of compressibility is the decrease in void
ratio per unit increase of pressure
B. The percent settlement at any time is called degree of
consolidation
C. Time factor is a dimensionless quantity
D. All the above.
Answer => D
211. The void ratio of
a soil sample decreases from 1.50 to 1.25 when the pressure is increased from
25 tonnes/m2 to 50 tonnes/m2, the coefficient of compressibility is
A.0.01
B.0.02
C.0.05
D. 0.001.
Answer => A
212. If the
coefficients of volume change and compressibility of a soil sample are
respectively 6.75 x 10-2 and 3 * 10-2, the void ratio of the soil sample, is
A.1.1
B.1.15
C.1.2
D.1.25
Answer => D
213. Pick up the
correct statement from the following;
A. The property of a soil that enables it to become stiff in
a relatively short time on standing is called thixotropy
B. The ratio of shear strength in natural state to the
remoulded shear strength under undrained conditions, is called degree of
sensitivity.
C. The difference between the undisturbed shear strength and
remoulded shear strength is known remoulding loss
D. The tendency of dense sand to expand on application of
shearing load, is known as dilatancy
Answer => D
214. If water content
of a soil is 40%, G is 2.270 and void ratio is 1.35, the degree of saturation
is
A.70%
B.75%
C.80%
D.85%
Answer => A
215. A moist soil
sample of volume 60 cc. weighs 108 g and its dried weight is 86.4g. If its
absolute density is 2.52, the degree of saturation is
A.54%
B.64%
C.74%
D. 84%.
Answer => D
216. A moist soil
sample weighing 108 g has a volume of 60 cc. If water content is 25% and value
of G = 2.52, the void ratio is
A.0.55
B.0.65
C.0.75
D. 0.80.
Answer => A
217. The degree of
saturation of the soil sample stated in, A moist soil sample weighing 108 g has
a volume of 60 cc. If water content is 25% and value of G = 2.52, is
A.54%
B.64%
C.74%
D. 84%.
Answer => D
218. The bulk density
of the soil sample stated A moist soil sample weighing 108 g has a volume of 60
cc. If water content is 25% and value of G = 2.52,, is
A. 1.4 g/cc
B. 1.6 g/cc
C. 1.8 g/cc
D. 2.0 g/cc.
Answer => C
219. When a
cohesionless looses soil attaiiks?quick condition, it
A. shear strength
B. bearing capacity
C. both A and B
D. neither (a) nor (b).
Answer => C
220. The Westergaard
analysis is used for
A. sandy soils
B. cohesive soils
C.stratified soils
D. clayey soils.
Answer => C
221. The equation T =
C + a tan (1) is given by
A. Rankine
B. Coulomb
C. Culaman
D. Mohr.
Answer => B
222. The effective
size of particles of soil is denoted by
A. D10
B. D20
C. D30
D. D60.
Answer => A
223. A decrease in
water content results in a reduction of the volume of a soil in
A. liquid state
B. plastic state
C. semi solid state
D. all of these.
Answer => D
224. The plasticity of
fine soils may be assessed by means of
A. dry strength test
B. toughness test
C. dilatancy test
D. all of these.
Answer => D
225. A partially
saturated soil is classified as
A. one phase soil
B. two phase soil
C. three phase soil
D. four phase soil.
Answer => C
226. If the
bulk density of the soil is p and water content co, then dry density of the
soil, is
A.
B.
C.
D.
Answer => A
227. The maximum possible value of dry density is
referred to as
A. dry density
B. zero air voids
C. saturation dry density
D. all the above.
Answer => D
228. The expression(po) is used for 1 + wGs
A. dry density
B. bulk density
C. degree of saturation
D. optimum water content.
Answer => A
229. Pick up the correct statement from the
following :
A. A maximum value of dry
density is obtained at optimum water content
B. At low value of water
content most soils tend to be stiff.
C. At high water content,
the dry density decreases with an increase of water content.
D. All the above.
Answer => D
230. The zero atmospheric pressure is at
A. sea level
B. mean sea level
C. water table
D. both (c) and of the
above.
Answer => D
231. 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.
Answer => D
232. Pick up the correct statement from
the,following :
A. The permeability of the
coarse-grained soils may be reduced by grouting. -
B. The process of injecting
fluids (i.e. grouts) into the pores space of the soil, is called grouting.
C. The grouting increases
the soil strength.
D. All the above.
Answer => D
233. The fluid generally used for grouting is
A. cement and water mix
B. clay suspension
C. sodium silicate
D. all the above.
Answer => D
234. Pick up the correct statement from the
following :
A. The rise of the ground
surface due to frost action is called frost heave.
B. The freezing of water is
accompained by a volume increase of 9%.
C. Below freezing point, higher
soil suction develops.
D. All the above.
Answer => D
235. The direct shear test suffers frpm the
following disadvantage:
A. Drain condition cannot be
controlled
B. Pore water pressure
cannot be measured
C. Shear stress on the
failure plane is not uniform.
D. The area under the shear
and vertical loads does not remain constant throughout the test
Answer => C
236. The length/diameter
ratio of cylindrical specimens used in triaxial test, is generally
A.1
B.1.5
C.2
D.2.5
Answer => C
237. The triaxial apparatus
is usually used for
A. unconsolidated-undrained
test
B. consolidated-undrained
test
C. drained test
D. all the above tests.
Answer => D
238. The vane shear test is used for the in-situ
determination of the undrained strength of the intact fully saturated
A. sands
B. clays
C. gravels
D. highly organic soils.
Answer => B
239. Pick up the correct statement from the
following :
A. Isotropic consolidation
of clay can be obtained in the triaxial apparatus under equal all-round
pressure.
B. If the present effective
stress is the maximum to which the clay has ever been subjected, it is called
normally consolidated clay
C. If the present effective
stress in the past was more than present effective stress, it is called
over-consolidated clay
D. All the above.
Answer => D
240. The maximum value of
effective stress in the past divided by the present value, is defined as over
consolidation ratio (OCR). The O.C.R. of an over consolidated clay is
A. less than 1
B.1
C. more than 1
D. None of these.
Answer => C
241. Over-consolidation of soils is caused due to
A. erosion of over burden
B. melting of ice sheets
after glaciations
C. permanent rise of water
table
D. all the above.
Answer => D
242. 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
A.4
B.8
C.12
D.20
Answer => D
243. The consolidation time for soils
A. increases with increasing
compressibility
B. decreases with increasing
permeability
C. increases rapidly with
increasing size of soil mass
D. All the above.
Answer => D
244. A stratum of clay 2 m thick will get
consolidated 80% in 10 years. For the 80% consolidation of 8 m thick stratum of
the same clay, the time required is
A. 100 years
B. 120 years
C. 140 years
D. 160 years
Answer => D
245. The specific gravity of quartz, is
A.2.65
B.2.72
C.2.85
D. 2.90.
Answer => A
246. The specific gravity of Calcite is
A.2.65
B.2.72
C.2.85
D. 2.90.
Answer => B
247. The ratio of emax, and emin of silty sand, is
A.2
B.5
C.3
D. 4.0.
Answer => C
248. Si particles
A. show dilatancy
B. swell when moist
C. possess high strength
when dry
D. disintegrate easily.
Answer => A
249. The specific yield of soil depends upon
A. compaction of stratum
B. distribution of pores
C. shape and size of
particles
D. all the above.
Answer => D
250. The shearing strength of a cohesionless soil
depends upon
A. dry density
B. rate of loading
C. confining pressure
D. nature of loading.
Answer => A
251. Assertion A : Alluvial soils are very fertile
Reason R : Alluvium contains a lot of water and oxygen Codes:
A. Both A and R are true and
R is the correct explanation of A.,
B. Both A and R are true but
R is not a correct explanation of A.,
C. A is true but R is false.
D. A is false but R is true.
Answer => C
252. Consider the following statements regarding
using dispensing agent for preparing soil suspension. I. Sodium oxalate 2.
Sodium silicate 3. Tetra sodium pyrophosphate 4. Sodium hexameta phosphate Of
these statements:
A. 1, 2 and 3 are correct
B. 2, 3 and 4 are correct
C. 1, 3 and 4 are correct
D. 1, 2, 3 and 4 are
correct.
Answer => D
253. Consider the following statements regarding
particle size distribution curves. 1. The size DIO is called effective diameter
2. The size D60 is called effective size 3. The ratio of- is called coefficient
of uniformity 4. For uniformly graded soils the coefficient of uniformity is
nearly unity. Of these statements:
A. 1, 2 and 3 are correct.
B. 2, 3 and 4 are correct,
C. 1, 3 and 4 are correct.
D. 2, 3 and 4 are correct.
Answer => C
254. Consider the following statements regarding
the compressibility of silts and clays :1. Low compressibility if liquid limit
is less than 30 2. Medium compressibility if liquid limit is greater than 30
and less than 50 3. High compressibility if liquid is greater than 50 Of these
statements:
A. 1 alone is correct
B. 1 and 2 are correct
C. 2 alone is correct
D. 2 and 3 are correct.
Answer => C
255. As per ISI (18:1498-1970) the classification
and identification of soils for general engineering purpose are: 1. Coarse
grained soils contain total material by weight larger than 75 microns IS sieve
size. 2. Fine grained soils contain total material by weight smaller than 75
micron IS sieve size 3. Highly organic soils contain large percentages fibrous
organic matter. Of these statements:
A. 1 alone is correct
B. 2 alone is correct
C. 2 and 3 are correct
D. l2 and 3 are correct.
Answer => D
256. Consider the following statements regarding
the factors affecting permeability of soils1. Permeability varies approximately
as the square of the grain size 2. Permeability is directly proportional to the
unit coefficient of water and its viscosity 3. Permeability is greatly
influenced in fine grained soils 4. Permeability is reduced in the presence of
organic matter Of these statements:
A. 1, 2 and 3 are correct
B. 2, 3 and 4 are correct
C. 1, 3 and 4 are correct
D. 1, 2, 3 and 4 are correct
Answer => C
257. Consider the following statements regarding
the seepage in soils 1. The pressure of the pore water at the water table is
atmospheric of 2. Water table is also called phreatic surface 3. Artesian
conditions exist if an inclined soil layer of low permeability is confined
locally by an overlying layer of high permeability 4. The attraction of the
particles by pore water above the water table is called soil suction Of these
statements:
A. 1, 2 and 3 are correct
B. 2, 3 and 4 are correct
C. 1, 2 and 4 are correct
D. 1, 3 and 4 are correct.
Answer => C
258. Consider the following statements regarding
the permeability of soils 1. The coefficient of permeability is the ratio of
discharge velocity and hydraulic gradient 2. The presence of a small percentage
of fines in a coarsegrained soil raises the permeability 3. The coefficient of
permeability of a soil is a function of its void ratio 4. In stratified soil
permeability in the direction of stratification is less than that in
perpendicular direction.Of these statements:
A. 1, 2 and 3 are correct
B. 2, 3 and 4 are correct
C. 1, 3 and 4 are correct
D. 3 and 4 are correct.
Answer => A
259. Consider the following statements regarding
the coefficient of permeability of soil.1. For coarse-grained soils, the
constant head permeability test is performed 2. For fine grained soils, the
falling head permeability test is performed 3. For homogenous coarse-grained
soil strata, well pumping test is suitably employed. Of thes e statements:
A. 1 alone is correct
B. 1, 2 and 3 are correct
C. 2 and 3 are correct
D. 3 alone is correct.
Answer => B
260. Consider the following statements regarding
the flow nets in seepage flow in soils 1. Every intersection of a flow line and
an equipotential is made at right angles 2. 2. Difference in flows (Ay) between
any two adjacent flow lines is the same3. Difference in potentials (A ))
between two adjacent4. The flow lines and equipotentials form curvilinear
equipotentials. rohmbuses. Of these statements:
A. 1 and 2 are correct
B. 2 and 3 are correct
C. 1, 2 and 3 are correct
D. 3 and 4 are correct
Answer => A
261. Consider the following statements regarding
anisotropic soils 1. The coefficient of permeabily has maximum value in the
direction of stratification 2. The coefficient of permeability has minimum
value in the direction normal to the direction of stratification 3. The
coefficient of permeability has same value in both the directions. Of these
statements:
A. 1 alone is correct
B. 1 and 2 are correct
C. 2 and 3 are correct
D. 1, 2 and 3 are correct
Answer => B
262. Assertion A : The temperature at which water
freezes in the pores of a soil depends on the pore size Reason R: The smaller
the pores the higher the freezing temperature in soil Codes:
A. Both A and R are true and
R is the correct explanation of A.
B. Both A and R are true but
R is not the correct explanation of A.
C. A is true but R is false
D. A is false but R is true.
Answer => C
263. Consider the following statements : 1. A
fully saturated soil may be compressed if some water can escape from the voids
2. In partially saturated soil, reduction in volume occurs due to compression
of air voids 3. Shear stress can be resisted only by the skeleton of soil
particles 4. Water filling the voids also withstand normal stress by a decrease
in pressure. Of these statements:
A. 1, 2, 3 are correct.
B. 2, 3,4 are correct
C. 1, 3, 4 are correct
D. 2 and 3 are correct.
Answer => A
264. Consider the following statements regarding
the Vane Shear test1. The test is used to determine the undrained strength of
intact, fully saturated clays.2. The test is very suitable for soft clays3. The
test is only used in clays having undrained strengths less than 500 ItN/m24.
The test gives reliable results if the clay contains sand or silt laminations.
Of these statements:
A. 1 and 2 are correct
B. 2 and 3 are correct
C. 3 and 4 are correct
D. 1 and 4 are correct.
Answer => C
265. Consider the following statements regarding
isotropic consolidation of clays1. Consolidation in the triaxial apparatus
under equal all-round pressure is known as isotropic, consolidation2. The
maximum value oteffective stress in the past divided by the present value is
known as the over consolidation ratio (OCR)3. A normally consolidated clay has
an over consolidation ratio greater than unity.4. An over consolidated clay has
an over consolidation ratio of unity.Of these statements:
A. 1, 2, 3 and 4 are correct
B. 1, 2, 3 are correct
C. 1 and 2 are correct
D. 1 alone is correct.
Answer => C
266. The characteristic relationship between e and
a3 of clay is shown in the figure Consider the following statements: 1. AB is
the curve for the normally consolidated condition 2. BC is the curve is
effective stress if reduced after consolidation to point B. 3. CD is the curve
if the effective stress is increased. 4. CD is known as recompression curve Of
these statements:
A. 1 alone is correct
B. 1 and 2 are correct
C. 1, 2 and 3 are correct
D. 1, 2, 3 and 4 are
correct.
Answer => C
267. Consider the following statements regarding
the lateral earth pressure03 1. Strains after yielding become entirely plastic
2. Yielding and shear failure occur at different states of stress 3. On
attaining plastic equilibrium in a soil mass, plastic collapse occurs 4. For
drained conditions, the slip surface generally consists of a straight line or a
logarithmic spiral or a combination of the two. Of these statements:
A. 1 alone is true
B. 1 and 2 are true
C. 1 and 3 are true
D. 1, 3 and 4 are true
Answer => C
268. Consider the following statements regarding
the Rankine's Theory of Earth Pressure 1. Movement of a retaining wall away
from the soil introduces active pressure 2. Movement of a retaining wall
against the soil mass introduces passive pressure 3. Product of active pressure
coefficient and passive pressure coefficient is 112.4. Active and passive
pressures in retaining walls increase linearly with depth. Of these statements:
A. 1 and 2 are correct
B. 1 and 3 are correct
C. 2 and 3 are correct
D. 1, 2 and 4 are correct
Answer => D
269. Consider the following statements regarding
the assumptions in Terzaghi's Theory of One-Dimensional Consolidation.1. The
soil is homogeneous 2. The soil is fully saturated 3. The solid particles are
incompressible 4. The water particles are compressible Of these statements
A. 1 and 2 are correct
B. 2 and 3 are correct
C. 3 and 4 are correct
D. 1, 2 and 3 are correct.
Answer => D
270. Pick up the correct statement from the
following:
A. The difference between
liquid limit and plastic limit, is called the plasticity index of soil
B. A clean sand i a
non-plastic material
C. Different states of soils
at different water contents are called the Atterberg's limits
D. All the above.
Answer => D
271. The soil formed by wind erosion is
A. Loess
B. Talus
C. Residual
D. Marl.
Answer => A
272. Unifromity coefficient of well graded soil is
A.1
B. less than 2
C.2
D. greater than 2.
Answer => B
273. The water content of a soil at which the soil
volume becomes constant, is called
A. plastic limit
B. liquid limit
C. shrinkage limit
D. solid limit.
Answer => C
274. Assuming specific gravity of soil solids as
2.5 and dry unit weight of soil 19.62 kN/m3, the shrinkage limit (ws) is
A.5%
B.10%
C.12.50%
D.15%
Answer => B
275. If the water content of a saturated soil, is
40%, and specific gravity of solids is 2.7 then void ratio is
A.1.04
B.1.05
C.1.06
D.1.08
Answer => D
276. if void ratio of a soil sample is 1.08, the
porosity is
A.48.10%
B.50.50%
C.52%
D.55%
Answer => C
277. Pick up the correct statement from the
following:
A. The flow occurs through a
soil, if a potential difference exists in the pore water in the soil
B. The property of soil that
deals with the water flows through a soil, is called permeability of the soil
C. The Dracy's law is valid
only for laminar flow conditions
D. All the above.
Answer => D
278. The dissipated head per unit length of flow
is called:
A. Hydraulic potential
B. Potential head
C. Hydraulic gradient
D. Potential.
Answer => C
279. Pick up the correct statement from the
following:
A. The pressure exerted by
water on the soil through which it percolates is called the seepage pressure
B. The seepage pressure
always acts in the direction of flow
C. The effective pressure
gets increased if the flow in the soil occurs in the downward direction
D. All the above.
Answer => D
280. Which one of the
following statements is wrong?
A. The seepage pressure
reduces the effective vertical pressure if the flow is upward
B. When seepage pressure and
the pressure due to sub merged weight of soil are equal, the cohessionless soil
looses all its shear strength
C. The phenomenon of lifting
of soil particles is generally called the quick conditions or boiling condition
or quick sand
D. None of these.
Answer => D
281. The sand below a
masonry structure has a porosity of 39 percent and a specific gravity of 2.64.
Assuming a factor of safety as 4, the maximum permissible upward gradient is
A.0.2
B.2.25
C.0.3
D. 0.33.
Answer => B
282. Pick up the correct
statement from the following-
A. The path followed by a
particle of water during the course of its seepage through a saturated soil
mass, is called a flow line
B. The strip between the two
neighbouring flow lines, is called a flow channel
C. The line which connects
the points of equal head is called an equipotential line
D. All the above.
Answer => D
283. Pick up the correct statement from the following.
A. The flow lines and
equipotentials intersect at right angles to each other
B. The fields are
approximately square but of different sizes
C. The hydraulic gradient
will be more if the dimensions of the field are small
D. All the above.
Answer => D
284. A flow net is used to determine the
following:
A. Seepage discharge
B. Hydrostaiac pressure
C. Seepage pressure
D. All the above.
Answer => D
285. For most of Indian rivers sands, the specific
gravity of solid, is assumed
A.2.45
B.2.55
C.2.65
D. 2.75.
Answer => C
286. If Ss and n are the specific gravity of
solids and porosity of soil then the critical exit gradient is
A. (1 + n) (Ss + 1)
B. (1 - n)(S- 1)
C. (1 + n) (.3 - 1)
D. (1 - n)(s+ 1)
Answer => B
287. The capillary fringe water is also known as
A. Vadose water
B. Gravity water
C. Suspended water
D. All the above.
Answer => D
288. Direct shear test is not preferred due to
A. quick drainage in a
relatively thin thickness of the sample
B. quick dissipation of pore
pressure developed in a relatively thin thickness of the sample
C. decrease of the area
under shear gradually with the progress of the test
D. None of the above.
Answer => C
289. The tendency of sand to expand by applying
the shearing load, is called
A. thixotropy
B. dilatancy
C. remoulding loss
D. degree of sensitivity.
Answer => B
290. The ratio of length and diameter of
cylindrical soil sample used for determination of shear strength by the
triaxial shear test is kept
A.1
B. 1 to 1.5
C. 1.5 to 2.0
D. 2.0 to 2.5.
Answer => D