1. The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is
Correct : D. provided more on front face than on inner face
2. Bulking of sand is maximum if moisture content is about
Correct : B. 4 %
3. Diagonal tension in a beam
Correct : C. increases below the neutral axis and decreases above the neutral axis
4. According to IS: 4561978, the column or the strut is the member whose effective length is greater
than
Correct : C. 3 times the least lateral dimension
5. When shear stress exceeds the permissible limit in a slab, then it is reduced by
Correct : A. increasing the depth
6. The diameter of ties in a column should be
Correct : D. more than 5 mm and also more than one-fourth of diameter of main bar
7. In counterfort retaining walls, the main reinforcement in the stem at support is
Correct : B. provided only on inner face
8. Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to
Correct : A. deflect downward
9. The purpose of reinforcement in pre-stressed concrete is
Correct : C. to impart initial compressive stress in concrete
10. Select the correct statement
Correct : A. elastic modulus of high tensile steel is nearly the same as that of mild steel
11. Due to circumferential action of the spiral in a spirally reinforced column
Correct : D. both the capacity of column and ductility of column increase
12. For concreting of heavily reinforced sections without vibration, the workability of concrete
expressed as compacting factor should be
Correct : D. above 0.92
13. Workability of concrete is directly proportional to
Correct : C. grading of the aggregate
14. Critical section for shear in case of flat slabs is at a distance of
Correct : B. d/2 from periphery of column/capital/ drop panel
15. For road pavements, the cement generally used, is
Correct : B. rapid hardening cement
16. Pick up the incorrect statement from the following:
Correct : D. none of these
17. For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus
correction factor to the moments obtained by Grashoff Rankine's theory
Correct : A. is always less than 1
18. Addition of pozzolana to ordinary port land cement, causes
Correct : D. all the above
19. Pick up the correct statement from the following:
Correct : D. all the above
20. For construction of structures in sea water, the cement generally preferred to, is
Correct : A. portland-pozzolana cement
21. Curing of pavements, floors, roofs and slabs, is done by
Correct : B. ponding method
22. Pick up the correct statement from the following:
Correct : D. all the above
23. The bulk density of aggregates, depends upon
Correct : D. all the above
24. In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively
Correct : B. tensile and compressive
25. The main object of compaction of concrete, is:
Correct : D. all the above
26. Which of the following has high tensile strength?
Correct : B. cold drawn wires
27. Concrete gains strength due to
Correct : C. hydration of cement
28. To determine the modulus of rupture, the size of test specimen used is
Correct : C. 150 × 150 × 700 mm
29. Tricalcium aluminate (C3A)
Correct : B. generates less heat of hydration
30. If the various concrete ingredients i.e. cement, sand and aggregates are in the ratio of 1:3:6, the
grade of concrete, is
Correct : A. m 100
31. Admixtures which cause early setting and hardening of concrete are called
Correct : B. accelerators
32. Pick up the correct statement from the following:
Correct : D. all the above
33. Pick up the incorrect statement from the following:
Correct : A. admixtures accelerate hydration
34. For a reinforced concrete section, the shape of shear stress diagram is
Correct : C. parabolic above neutral axis and rectangular below neutral axis
35. Allowable shear strength of concrete, depends upon
Correct : A. shear strength
36. In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm
diameter for
Correct : B. 25 times
37. The individual variation between test strength of sample should not be more than
Correct : C. ± 15 % of average
38. Pick up the incorrect statement from the following:
Correct : D. all the above
39. The slab is designed as one way if the ratio of long span to short span is
Correct : D. greater than 2
40. For the construction of cement concrete dams, the maximum permissible size of the aggregates, is
Correct : A. 40 mm
41. Pick up the incorrect statement from the following:
Correct : A. with passage of time, the strength of cement increases
42. To hydrate 500kg of cement full water needed, is
Correct : D. 130 kg
43. Pick up the correct statement from the following:
Correct : D. all the above
44. In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on
Correct : A. front face only
45. Under normal conditions using an ordinary cement, the period of removal of the form work, is:
Correct : D. all the above
46. Water cement ratio is generally expressed in volume of water required per
Correct : D. 50 kg
47. To ensure constant moisture content in aggregates
Correct : D. all the above
48. Pick up the correct statement from the following:
Correct : D. all the above
49. The average permissible stress in bond for plain bars in tension is
Correct : B. increased by 25% for bars in compression
50. Concrete mainly consists of
Correct : D. all the above
51. For the construction of thin R.C.C. structures, the type of cement to be avoided, is
Correct : D. blast furnace slag cement
52. Which of the following R.C. retaining walls is suitable for heights beyond 6 m?
Correct : C. counterfort type
53. For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:
Correct : D. 105 litres of sand and 210 litres of aggregates
54. A concrete using an air entrained cement
Correct : C. is more plastic and workable
55. Pick up the correct statement from the following:
Correct : D. none of these
56. The surface where two successive placements of concrete meet, is known as
Correct : C. construction joint
57. A beam curved in plan is designed for
Correct : D. bending moment, shear and torsion
58. Pick up the correct statement from the following:
Correct : D. all the above
59. 'Ware house pack' of cement means
Correct : C. pressure compaction of the bags on lower layers
60. High carbon content in the steel causes
Correct : B. increase in tensile strength but decrease in ductility
61. Particles of 0.002 mm size are that of
Correct : A. clay
62. Ultimate strength of cold drawn high steel wires
Correct : B. decreases with increase in diameter of bar
63. The cement whose strength is a little lower than the ordinary cement during the first three
months but attains afterwards the same strength, is known as
Correct : A. low-heat portland cement
64. The dimensions of a 35 litre forma for measuring aggregates by volume, are:
Correct : C. length 27 cm, breadth 27 cm, height 48 cm
65. Ratio of permissible stress in direct compression and bending compression is
Correct : A. less than 1
66. Concrete containing
Correct : D. all the above
67. The lower water cement ratio in concrete, introduces
Correct : D. all the above
68. In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on
Correct : C. the inner face in one direction
69. The aggregate containing moisture in pores and having its surface dry, is known as
Correct : D. saturated surface dry aggregate
70. Pick up the correct statement from the following:
Correct : D. all the above
71. According to ISI recommendations, the maximum depth of stress block for balanced section of a
beam of effective depth d is
Correct : A. 0.43 d
72. Pick up the correct proportions of chemical ingredients of cement
Correct : A. lime : silica : alumina : iron oxide : 63 : 22 : 6 : 3
73. Internal friction between the ingredients of concrete, is decreased by using
Correct : D. more water and coarse aggregates
74. Pick up the correct statement from the following:
Correct : D. all the above
75. Pick up the correct statement from the following:
Correct : D. all the above
76. If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270
cm, the number of cement bags to be stored, is
Correct : D. 2700 bags
77. The property of fresh concrete, in which the water in the mix tends to rise to the surface while
placing and compacting, is called
Correct : B. bleeding
78. Workability of concrete for a given water content is good if the aggregates, are
Correct : A. rounded aggregate
79. For preparing ordinary concrete, the quantity of water used, is
Correct : C. 5% by weight of aggregates plus 30% of weight of cement
80. Finer grinding of cement
Correct : A. affects only the early development of strength
81. The light weight aggregates are obtained from
Correct : D. volcanic source
82. The aggregate impact value of the aggregate used in
Correct : D. all the above
83. For walls, columns and vertical faces of all structural members, the form work is generally
removed after
Correct : A. 24 to 48 hours
84. Efflorescence in cement is caused due to an excess of
Correct : D. alkalis
85. For given workability the grading requiring the least amount of water is one that gives
Correct : A. greatest surface area for the given cement and aggregates
86. Minimum pitch of transverse reinforcement in a column is
Correct : D. lesser of the above three values
87. Pick up the incorrect statement applicable to the field test of good cement.
Correct : D. all the above
88. An aggregate is known as cyclopean aggregate if its size is more than
Correct : D. 75 mm
89. Workability of concrete mix with low water cement ratio is determined by
Correct : C. compaction factor test
90. The effect of creep on modular ratio is
Correct : B. to increase it
91. The type of aggregates not suitable for high strength concrete and for pavements subjected to
tension, is
Correct : A. rounded aggregate
92. The maximum percentage of chemical ingredient of cement is that of
Correct : D. lime
93. The commercial name of white and coloured cement in India, is
Correct : D. all the above
94. An excess of flaky particles in concrete aggregates
Correct : D. all the above
95. Increase in the moisture content in concrete
Correct : A. reduces the strength
96. The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity
dams should be
Correct : D. below 200 kg/cm2
97. Select the incorrect statement
Correct : D. none of the above
98. Permissible compressive strength of M 150 concrete grade is
Correct : C. 200 kg/cm2
99. Cement used for normal concrete construction, is obtained by burning a mixture of
Correct : D. siliceous, argillaceous and calcareous materials
100. As compared to ordinary Portland cement, high alumina cement has
Correct : A. higher initial setting time but lower final setting time