Junior Engineer Civil previous year question papers of Staff Selection Commission

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1. A well-seasoned timber has a moisture
content of about
a. 15% to 20%
b. 10% to 12%
c. 5% to 85
d. 2% to 3%
2. Dry rot in timber is caused by
a. Lack of ventilation
b. Lack of light
c. Immersion in water
d. Alternate wet and dry atmosphere

3. Wood is impregnated with creosote oil in
order to
a. Change its colour
b. Protect against fungi
c. Protect the annular layers
d. Fill up the pores

4. Consider the following statements :
Bricks are soaked in water before use in
masonry work
1. to remove dust
2. to remove air voids
3. so that they do not absorb water from
cement mortar
Which of these statements is/are correct ?
a. 1, 2 and 3
b. 1 only
c. 2 and 3
d. 3 only

5. The proper size of mould for testing
compressive strength of cement is
a. 7.05 cm tube
b. 10.05 cm cube
c. 15 cm cube
d. 12.05 cm cube

6. The specific gravity of commonly
available ordinary portland cement is
a. 4.92
b. 3.15
c. 2.05
d. 1.83

7. A quick-setting cement has an initial
setting time of about
a. 50 minutes
b. 40 minutes
c. 15 minutes
d. 5 minutes

8. Match List I (Cement Mortar for Different
Work) with List II(Proportion of Cement
and sand in Mortar ) and select the correct
answer :
List I
A. Cement mortar for normal brick work
B. Cement mortar for plastering works
C. Cement mortar for grouting the
cavernous rocks
D. Cement mortar for guniting
List II
1. 1 : 4
2. 1 : 3
3. 1 : 6
4. 1 : 1.5
A B C D
a. 3 4 2 1
b. 1 2 3 4
c. 3 1 4 2
d. 1 4 2 3

9. Match List I(Admixture) with list II
(Action in Concrete) and select the correct
answer :
List I
A. Calcium lignosulphonate
B. Aluminum powders
C. Tartaric acid
D. Aluminum sulphate
List II
1. Anti bleeder
2. Retarder
3. Air entrainer
4. Water reducer
A B C D
a. 3 2 1 4
b. 4 3 2 1
c. 3 4 1 2
d. 4 2 3 1

10. A mortar in which both cement and lime
are used in definite proportions as binding
materials is reffered to as
a. Light weight mortar
b. Fire resistant mortar
c. Gauged mortar
d. Water resistant mortar







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SSC Junior Engineer Civil engineering question paper
1. A well-seasoned timber has a moisture b. 40 minutes
content of about c. 15 minutes
a. 15% to 20% d. 5 minutes
b. 10% to 12% 8. Match List I (Cement Mortar for Different
c. 5% to 85 Work) with List II(Proportion of Cement
d. 2% to 3% and sand in Mortar ) and select the correct
2. Dry rot in timber is caused by answer :
a. Lack of ventilation List I
b. Lack of light A. Cement mortar for normal brick work
c. Immersion in water B. Cement mortar for plastering works
d. Alternate wet and dry atmosphere C. Cement mortar for grouting the
3. Wood is impregnated with creosote oil in cavernous rocks
order to D. Cement mortar for guniting
a. Change its colour List II
b. Protect against fungi 1. 1 : 4
c. Protect the annular layers 2. 1 : 3
d. Fill up the pores 3. 1 : 6
4. Consider the following statements : 4. 1 : 1.5
Bricks are soaked in water before use in A B C D
masonry work a. 3 4 2 1
1. to remove dust b. 1 2 3 4
2. to remove air voids c. 3 1 4 2
3. so that they do not absorb water from d. 1 4 2 3
cement mortar 9. Match List I(Admixture) with list II
Which of these statements is/are correct ? (Action in Concrete) and select the correct
a. 1, 2 and 3 answer :
b. 1 only List I
c. 2 and 3 A. Calcium lignosulphonate
d. 3 only B. Aluminum powders
5. The proper size of mould for testing C. Tartaric acid
compressive strength of cement is D. Aluminum sulphate
a. 7.05 cm tube List II
b. 10.05 cm cube 1. Anti bleeder
c. 15 cm cube 2. Retarder
d. 12.05 cm cube 3. Air entrainer
6. The specific gravity of commonly 4. Water reducer
available ordinary portland cement is A B C D
a. 4.92 a. 3 2 1 4
b. 3.15 b. 4 3 2 1
c. 2.05 c. 3 4 1 2
d. 1.83 d. 4 2 3 1
7. A quick-setting cement has an initial 10. A mortar in which both cement and lime
setting time of about are used in definite proportions as binding
a. 50 minutes materials is reffered to as

a. Light weight mortar
b. Fire resistant mortar
c. Gauged mortar
d. Water resistant mortar
11. In order to improve the workability of
harsh cement mortar which of the following items is/are added ?
1. water
2. Plaster of Paris
3. Lime
Select the correct answer using the codes given below :
a. 1 only
b. 1 and 2
c. 3 only
d. 1 and 3
12. Bleeding of concrete leads of which of the
following ?
1. Drying up of concrete surface
2. Formation of pores inside.
3. Segregation of aggregate
4. Decrease in strength
Select the correct answer using the coded given below :
a. 1 only
b. 1 and 2
c. 1 and 3
d. 2 and 4
13. Match List I (material Characteristics)
with List II (Property of Concrete) and select the correct answer :
List I
A. Water cement ratio
B. Water content
C. Minimum cement content
D. Segregation
List II
1. Durability
2. Compressive strength
3. Stability of mix
4. Workability
A B C D
a. 4 1 3 2
b. 2 4 3 1
c. 4 1 2 3
d. 2 4 1 3
14. Stress-strain curve of concrete is
a. A perfect straight line up to failure
b. Straight lien up to 0.002% string value and then parabolic up to failure
c. Parabolic up to 0.002% strain value
and then a straight line up to failure
d. Hyperbolic up to 0.002% staring value
and then a straight line up to failure
15. Consider the following statements :
Ultrasonic pulse velocity test is
1. used to measure the straight of wet concrete.
2. used to obtain estimate of concrete strength of finished concrete elements.
3. a destructive test
4. a non-destructive test.
Which of these statemtns are correct ?
a. 1, 2 and 3
b. 2 and 3
c. 2 and 4
d. 1 and 3
16. The material in which large deformation is
possible before the absolute failure or rupture is termed as
a. Brittle
b. Elastic
c. Ductile
d. Plastic
17.
A rigid bar AC is supported by three rods of same material and of equal diameter. The bar AC is initially horizontal. A force P is applied such that the bar AC continues to remain horizontal. Forces in each of the shorter bars and in the longer bar are, respectively.
a. 0.4 P, 0.2 P
b. 0.3 P, 0.4 P
c. 0.2 P, 0.6 P
d. 0.5 P , zero
18. A member having length L, cross-sectional
areas A and modulus of elasticity E is subjected to an axial load W. The strain energy stored in this member is
a. WL2 / AE
b. WL2 / 2AE
c. W2L2 / 2AE
d. W2L / AE
19. Elastic limit is the point

a. Up to which stress is proportional to strain
b. At which elongation takes place
without application of additional load
c. Up to which if the load is remoed,
original volume and shaped are regained
d. At which the toughness is maximum
20. Match List I with list II and select the
correct answer :
List I(Material)
A. Isotropic
B. Homogeneous
C. Viscoelastic
D. Brittle
List II
1. Time dependent stress-strain relation
2. No plastic zone
3. Identical properties in all directions
4. Similar properties throughout the
volume
A B C D
a. 3 1 2 4
b. 4 1 2 3
c. 3 4 1 2
d. 4 3 1 2
21. As per the elastic theory of design, the
factor of safety is the ratio of
a. Working stress to stress at the limit of proportionality
b. Yield stress to working stress
c. Ultimate stress to working stress
d. Ultimate load to load at yield
22. The shear stress distribution for a
rectangular section under the action of shear force S is shown below. The rectangular section is bd. Select the correct shear stress distribution form the following:
a.
b.
c.
d.
23. Two co-axial springs are subjected to a
force of 1 kN. Spring constant of larger diameter spring is 80 N/mm and that of smaller diameter spring is 120 N/mm. The deformation in the spring combination will be equal to
a. 5 mm
b. 15 mm
c. 125/6 mm
d. 135/7 mm
24. Match List I (Method of Analysis) with
List II(Unknown Being Evaluated) and select the correct answer
List I
A. Flexibility method
B. Stiffness Method
C. Kanis method
D. Moment distribution method
List II
1. Degrees of freedom
2. Redundant forces
3. Rotations by incremental iteration and unknown sways of plane frames
4. Displacement rotations and sways of plane frames
A B C D
a. 2 1 4 3
b. 3 4 1 2
c. 2 4 1 3
d. 3 1 4 2
25. The principal strains at a point are + 800 
10-6 cm/cm, +400  10-6 cm/cm and - 1200  10-6 cm/cm. The volumetric strain is equal to
a. + 1200  10-6 cm/cm
b. + 800  10-6 cm/cm
c. - 1200  10-6 cm/cm
d. zero
26. In a riveted joint, failure will occur due to
which one of the following ?
a. Shear failure of rivet
b. Bearing failure of rivet
c. Tearing failure of plate

d. Minimum load value of shearing ,
bearing or tearing failure
27. The radius of Mohr’s circle is zero when
the state of stress is such that
a. Shear stress is zero
b. There is pure shear
c. There is not shear stress but identical direct stresses in two mutually
perpendicular directions
d. There is no shear stress but equal direct stresses, opposite in nature, in two
mutually perpendicular directions
28.
The above figure shows the stress condition of an element. The principal stresses are
a.  2 
b.  /2
c.  
d.  2/3
29. If the principal stresses at a point in a
stressed body are 150 kN/m2 tensile and 50 kN/m2 compressive, then maximum shear stress at this point will be
a. 100 kN/m2
b. 150 kN/m2
c. 200 kN/m2
d. 250 kN/m2
30. In the Mohr’s circle for strains, radius of
Mohr’s circle givens the
a. Minimum value of normal strain
b. Maximum value of normal strain
32. If the shear force diagram of a simply
supported beam is parabolic, then he load on the beam is
a. Uniformly distributed load
b. Concentrated load at mid span
c. External moment acting at mid span
d. Linearly varying distributed load
e.
33. For determining the deflection y of a
loaded beam at a distance x by Macaulay’ method, which one or more of the following is/are used ?
1. The basic difference equation for deflection El (d2y / dx2) = -M.
Where El is the flexural rigidity of the beam, M is the bending moment
2. Successive integration of the
differential equation given in 1.
3. Known positions of zero slope and zero deflection in the beam.
Select the correct answer using the codes given below :
a. 1 only
b. 1 and 2
c. 3 only
d. 1, 2 and 3
34.
The above figure shows the cross-section of a fitched beam consisting of a steel plate sandwiched between two wooden blocks. The second moment of area of the composite beam about the neutral axis XX is
3 3
c. Maximum value of shear stain bh mth
d. Half of maximum value of shear strain a. +
12 12
31. A thin cylindrical tube with closed ends is 3 3
subjected to
1. Longitudinal stress 1 = 14 N/mm2
2. Hoop stress 2 = 2 N/mm2
3. Shearing stress  = 8 N/mm2 Then the maximum shearing stress is
a. 14 N/mm2
b.
c.
d.
bh t(mh)
+
12 12
3
h
(b+t) 12
3
bh 12
b. 12 N/mm2 (where m is modular ratio of steel and
c. 10 N/mm2 wood )
d. 8 N/mm2

35. Match list I(End conditions of Columns)
with List II(Effective Length, l3) and select the correct answer :
List I
A. Both ends fixed
B. Both ends hinged
C. One end fixed, other free
D. One end fixed, other hinged
List II
1. le = 2 l
2. le = l / 2
3. le = l / 2
4. le = l
where l is the length & le is the effective length of the column)
A B C D
a. 2 4 1 2
b. 3 1 2 4
c. 2 4 3 1
d. 3 4 1 2
36. A symmetrical parabolic arch of span l an
dries h is hinged at both the supports. The arch carries a uniformly distributed load of /unit length along the entire span.
Which one of the following is correctly matched ?
a. Horizontal thrust : l2 / 8h
b. Bending moment at crown : l2 / 8
c. Radial shear at springing :
[(l2 / 2) -(l2 / 8h)]
d. Vertical reaction at supports : l
37. A three-hinged semi-circular arch of radius
R carries on the arch at the hinge would be
a. W / 2
b. W / 2
c. 2/3 W
d. 4/3 W/
38. From consideration of earthquake loading
and lateral stability of tall building, which of the following measures are taken?
1. Minimize gravity loads
2. Add masses at floor levels.
3. ensure ductility at the location s of maximum moments
4. provide shear walls
5. Provide stilt (ground) storey
Select the correct answer using the codes given below :
a. 1 and 5
b. 2, 3 and 5
c. 1, 3 and 4
d. 2, 3 and 4
39.
A pin jointed truss is loaded as shown in the above figure match List I with list II and select the correct answer :
List I (member)
A. Member AB
B. Member AC
C. Member BD
D. Member CD
List II (Force induced) 1. 30 kN
2. 50 kN 3. 0
4. 10 kN
A B C D
a. 3 2 1 4
b. 4 3 2 1
c. 3 4 2 1
d. 4 3 1 2
40.
Member(s) of the frame shown above which carries/carry zero force is/are
a. EC only
b. EC and AB
c. EC and AC
d. EC, AC and AB
41.
What is the force in the member CE of a cantilever truss shown in the above figure?

a. P(tensile)
b. P(compression)
c. 2 P(tensile)
d. zero
42. A solid circular shaft of diameter d is
subjected to a twisting moment T. The maximum shear stress in the shaft is proportional to
a. d2
b. d
c. 1/d2
d. 1/d3
43. When a cantilever shaft of brittle material
is subjected to a clockwise twisting moment at the free end, the possible crack propagation will be
a. 45o clockwise with respective to the
axis of shaft
b. 45o anticlockwise with respective to
the axis of shaft
c. Perpendicular to the axis
d. Parallel to the axis
44. For a solid circular section of diameter d,
the stress in a column will be compressive only if the eccentricity of the line of action of the compressive force is within
a. d/4
b. d/8
c. d/6
d. d/16
45. The stresses in concrete in a reinforced
concrete element under sustained load due to creep
a. Increase with time
b. Decrease with time
c. Remain unchanged
d. Fluctuate
46. Fro the analysis of thick cylinders, the
theory applicable is
a. Lame’s theory
b. Rankine’s theory
c. Poisson’s theory
d. Courbon’s theory
47. A thin hollow cylinder of diameter d,
length l and thickness t is subjected to an internal pressure p. The hoop stress in the cylinder is
a. pd / 8t
b. pd / 4t
c. pd / 2t
d. pd / t
48.
A portal frame with all member s having the same El, has one end fixed and the other hinged. Due to side-sway, the ratio of fixed end moments MBA / MCD would be
a. 1 : 1
b. 1 : 2
c. 1 : 3
d. 2 : 1
49.
Which one of the following diagrams represents the influence line for force in the member DG ?
a.
b.
c.
d.
50. Match List I (Assumption/Theorem) with
list II(Analysis and strength) an select the correct answer :
List I
A. Plane section remains plane before and after bending deformations
B. Elasticity and small deformations
C. Uniqueness theorem
D. Large deformations
List II
1. Elastic analysis and superposition
2. Strain distribution and plastic moment
of resistance
3. Non-linear analysis and buckling load
4. Collapse load
A B C D
a. 1 2 3 4
b. 2 1 4 3
c. 1 2 4 3
d. 2 1 3 4
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