Herewith below we have shared more than 350 MCQs in Concrete Technology and Design of our Civil Engineering subject. This will be very useful to study MCQs in systematic Manner.
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- Answered
- Review
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Question 1 of 361
1. Question
The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is
-
Question 2 of 361
2. Question
Bulking of sand is maximum if moisture content is about
-
Question 3 of 361
3. Question
Diagonal tension in a beam
-
Question 4 of 361
4. Question
According to IS: 4561978, the column or the strut is the member whose effective length is greater
than -
Question 5 of 361
5. Question
When shear stress exceeds the permissible limit in a slab, then it is reduced by
-
Question 6 of 361
6. Question
The diameter of ties in a column should be
-
Question 7 of 361
7. Question
In counterfort retaining walls, the main reinforcement in the stem at support is
-
Question 8 of 361
8. Question
Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to
-
Question 9 of 361
9. Question
The purpose of reinforcement in pre-stressed concrete is
-
Question 10 of 361
10. Question
Select the correct statement
-
Question 11 of 361
11. Question
To minimise the effect of differential settlement, the area of a footing should be designed for
-
Question 12 of 361
12. Question
Due to circumferential action of the spiral in a spirally reinforced column
-
Question 13 of 361
13. Question
For concreting of heavily reinforced sections without vibration, the workability of concrete
expressed as compacting factor should be -
Question 14 of 361
14. Question
Workability of concrete is directly proportional to
-
Question 15 of 361
15. Question
Which of the following statements is incorrect?
-
Question 16 of 361
16. Question
Critical section for shear in case of flat slabs is at a distance of
-
Question 17 of 361
17. Question
For road pavements, the cement generally used, is
-
Question 18 of 361
18. Question
Pick up the incorrect statement from the following:
-
Question 19 of 361
19. Question
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 -
Question 20 of 361
20. Question
Addition of pozzolana to ordinary port land cement, causes
-
Question 21 of 361
21. Question
Pick up the correct statement from the following:
-
Question 22 of 361
22. Question
In a counterfort retaining wall, the main reinforcement is provided on the
(i) Bottom face in front counterfort
(ii) Inclined face in front counterfort
(iii) Bottom face in back counterfort
(iv) Inclined face in back counterfort
The correct answer is -
Question 23 of 361
23. Question
For construction of structures in sea water, the cement generally preferred to, is
-
Question 24 of 361
24. Question
Curing of pavements, floors, roofs and slabs, is done by
-
Question 25 of 361
25. Question
The centroid of compressive force, from the extreme compression fiber, in limit state design lies at
a distance of
Where xu is the depth of neutral axis at the limit state of collapse -
Question 26 of 361
26. Question
Pick up the correct statement from the following:
-
Question 27 of 361
27. Question
The bulk density of aggregates, depends upon
-
Question 28 of 361
28. Question
In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively
-
Question 29 of 361
29. Question
The main object of compaction of concrete, is:
-
Question 30 of 361
30. Question
Which of the following has high tensile strength?
-
Question 31 of 361
31. Question
Pick up the incorrect statement from the following:
-
Question 32 of 361
32. Question
Concrete gains strength due to
-
Question 33 of 361
33. Question
To determine the modulus of rupture, the size of test specimen used is
-
Question 34 of 361
34. Question
Tricalcium aluminate (C3A)
-
Question 35 of 361
35. Question
If the various concrete ingredients i.e. cement, sand and aggregates are in the ratio of 1:3:6, the
grade of concrete, is -
Question 36 of 361
36. Question
Admixtures which cause early setting and hardening of concrete are called
-
Question 37 of 361
37. Question
Pick up the correct statement from the following:
-
Question 38 of 361
38. Question
Pick up the incorrect statement from the following:
-
Question 39 of 361
39. Question
For a reinforced concrete section, the shape of shear stress diagram is
-
Question 40 of 361
40. Question
Allowable shear strength of concrete, depends upon
-
Question 41 of 361
41. Question
In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm
diameter for -
Question 42 of 361
42. Question
The individual variation between test strength of sample should not be more than
-
Question 43 of 361
43. Question
Pick up the incorrect statement from the following. For performing compressive strength test of
cement -
Question 44 of 361
44. Question
Pick up the incorrect statement from the following:
-
Question 45 of 361
45. Question
The slab is designed as one way if the ratio of long span to short span is
-
Question 46 of 361
46. Question
For the construction of cement concrete dams, the maximum permissible size of the aggregates, is
-
Question 47 of 361
47. Question
Pick up the incorrect statement from the following:
-
Question 48 of 361
48. Question
The load carrying capacity of a helically reinforced column as compared to that of a tied column is
about -
Question 49 of 361
49. Question
To hydrate 500kg of cement full water needed, is
-
Question 50 of 361
50. Question
Pick up the correct statement from the following:
-
Question 51 of 361
51. Question
In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on
-
Question 52 of 361
52. Question
Under normal conditions using an ordinary cement, the period of removal of the form work, is:
-
Question 53 of 361
53. Question
Water cement ratio is generally expressed in volume of water required per
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Question 54 of 361
54. Question
The minimum cover in a slab should neither be less than the diameter of bar nor less than
-
Question 55 of 361
55. Question
To ensure constant moisture content in aggregates
-
Question 56 of 361
56. Question
Pick up the correct statement from the following:
-
Question 57 of 361
57. Question
The average permissible stress in bond for plain bars in tension is
-
Question 58 of 361
58. Question
Concrete mainly consists of
-
Question 59 of 361
59. Question
For the construction of thin R.C.C. structures, the type of cement to be avoided, is
-
Question 60 of 361
60. Question
Which of the following R.C. retaining walls is suitable for heights beyond 6 m?
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Question 61 of 361
61. Question
For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:
-
Question 62 of 361
62. Question
A concrete using an air entrained cement
-
Question 63 of 361
63. Question
provided on
(i) Bottom face near counterfort
(ii) Top face near counterfort
(iii) Bottom face near centre of span
(iv) Top face near centre of span
The correct answer is -
Question 64 of 361
64. Question
Pick up the correct statement from the following:
-
Question 65 of 361
65. Question
The surface where two successive placements of concrete meet, is known as
-
Question 66 of 361
66. Question
A beam curved in plan is designed for
-
Question 67 of 361
67. Question
Pick up the correct statement from the following:
-
Question 68 of 361
68. Question
‘Ware house pack’ of cement means
-
Question 69 of 361
69. Question
High carbon content in the steel causes
-
Question 70 of 361
70. Question
If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete
provided maximum nominal size of aggregate, does not exceed -
Question 71 of 361
71. Question
Particles of 0.002 mm size are that of
-
Question 72 of 361
72. Question
Ultimate strength of cold drawn high steel wires
-
Question 73 of 361
73. Question
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 -
Question 74 of 361
74. Question
The dimensions of a 35 litre forma for measuring aggregates by volume, are:
-
Question 75 of 361
75. Question
Ratio of permissible stress in direct compression and bending compression is
-
Question 76 of 361
76. Question
Concrete containing
-
Question 77 of 361
77. Question
The lower water cement ratio in concrete, introduces
-
Question 78 of 361
78. Question
In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on
-
Question 79 of 361
79. Question
The aggregate containing moisture in pores and having its surface dry, is known as
-
Question 80 of 361
80. Question
Pick up the correct statement from the following:
-
Question 81 of 361
81. Question
According to ISI recommendations, the maximum depth of stress block for balanced section of a
beam of effective depth d is -
Question 82 of 361
82. Question
Pick up the correct proportions of chemical ingredients of cement
-
Question 83 of 361
83. Question
Internal friction between the ingredients of concrete, is decreased by using
-
Question 84 of 361
84. Question
Pick up the correct statement from the following:
-
Question 85 of 361
85. Question
In pre-stressed concrete
-
Question 86 of 361
86. Question
Pick up the correct statement from the following:
-
Question 87 of 361
87. Question
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 -
Question 88 of 361
88. Question
The property of fresh concrete, in which the water in the mix tends to rise to the surface while
placing and compacting, is called -
Question 89 of 361
89. Question
Workability of concrete for a given water content is good if the aggregates, are
-
Question 90 of 361
90. Question
For preparing ordinary concrete, the quantity of water used, is
-
Question 91 of 361
91. Question
Finer grinding of cement
-
Question 92 of 361
92. Question
The light weight aggregates are obtained from
-
Question 93 of 361
93. Question
The aggregate impact value of the aggregate used in
-
Question 94 of 361
94. Question
For walls, columns and vertical faces of all structural members, the form work is generally
removed after -
Question 95 of 361
95. Question
Efflorescence in cement is caused due to an excess of
-
Question 96 of 361
96. Question
For given workability the grading requiring the least amount of water is one that gives
-
Question 97 of 361
97. Question
Minimum pitch of transverse reinforcement in a column is
-
Question 98 of 361
98. Question
Pick up the incorrect statement applicable to the field test of good cement.
-
Question 99 of 361
99. Question
An aggregate is known as cyclopean aggregate if its size is more than
-
Question 100 of 361
100. Question
In counterfort type retaining walls
(i) The vertical slab is designed as a continuous slab
(ii) The heel slab is designed as a continuous slab
(iii) The vertical slab is designed as a cantilever
(iv) The heel slab is designed as a cantilever
The correct answer is -
Question 101 of 361
101. Question
Workability of concrete mix with low water cement ratio is determined by
-
Question 102 of 361
102. Question
If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient
of variation is -
Question 103 of 361
103. Question
The effect of creep on modular ratio is
-
Question 104 of 361
104. Question
The type of aggregates not suitable for high strength concrete and for pavements subjected to
tension, is -
Question 105 of 361
105. Question
The maximum percentage of chemical ingredient of cement is that of
-
Question 106 of 361
106. Question
Select the incorrect statement
-
Question 107 of 361
107. Question
The commercial name of white and coloured cement in India, is
-
Question 108 of 361
108. Question
An excess of flaky particles in concrete aggregates
-
Question 109 of 361
109. Question
Increase in the moisture content in concrete
-
Question 110 of 361
110. Question
Pick up the correct statement from the following:
-
Question 111 of 361
111. Question
The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity
dams should be -
Question 112 of 361
112. Question
Select the incorrect statement
-
Question 113 of 361
113. Question
Permissible compressive strength of M 150 concrete grade is
-
Question 114 of 361
114. Question
Cement used for normal concrete construction, is obtained by burning a mixture of
-
Question 115 of 361
115. Question
As compared to ordinary Portland cement, high alumina cement has
-
Question 116 of 361
116. Question
The maximum amount of dust which may be permitted in aggregates is
-
Question 117 of 361
117. Question
If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respectively and
W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is
obtained by the equation -
Question 118 of 361
118. Question
Examine the following statements:
(i) Factor of safety for steel should be based on its yield stress,
(ii) Factor of safety for steel should be based on its ultimate stress,
(iii) Factor of safety for concrete should be based on its yield stress,
(iv) Factor of safety for concrete should be based on its ultimate stress.
The correct statements are -
Question 119 of 361
119. Question
1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0
kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is -
Question 120 of 361
120. Question
Bulking of sand is
-
Question 121 of 361
121. Question
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the
diameter of bar nor less than -
Question 122 of 361
122. Question
Workability of concrete is measured by
-
Question 123 of 361
123. Question
The size of fine aggregates does not exceed
-
Question 124 of 361
124. Question
The main reason for providing number of reinforcing bars at a support in a simply supported beam
is to resist in that zone -
Question 125 of 361
125. Question
Hardening of cement occurs at
-
Question 126 of 361
126. Question
The entrained air in concrete
-
Question 127 of 361
127. Question
According to IS: 4561978, the flexural strength of concrete is
-
Question 128 of 361
128. Question
Slump test is done for
-
Question 129 of 361
129. Question
Di-calcium silicate (C2S)
-
Question 130 of 361
130. Question
The limits of percentage p of the longitudinal reinforcement in a column is given by
-
Question 131 of 361
131. Question
The risk of segregation is more for
-
Question 132 of 361
132. Question
Le-Chatelier’s apparatus is used for testing
-
Question 133 of 361
133. Question
According to Whitney’s theory, depth of stress block for a balanced section of a concrete beam is
limited to Where d is effective depth of beam -
Question 134 of 361
134. Question
Construction joints are generally provided in concrete
-
Question 135 of 361
135. Question
If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve,
the graded aggregates do not contain -
Question 136 of 361
136. Question
Most common method of pre-stressing used for factory production is
-
Question 137 of 361
137. Question
C.R.R.I. charts are used to obtain a relationship between strength of concrete and
-
Question 138 of 361
138. Question
Pick up the correct statement from the following:
-
Question 139 of 361
139. Question
For the design of retaining walls, the minimum factor of safety against overturning is taken as
-
Question 140 of 361
140. Question
If the depth of moist sand in a cylinder is 15 cm and the depth of the sand when fully inundated
with water is 12 cm, the bulking of the moist sand, is -
Question 141 of 361
141. Question
If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60
mm, the particular aggregate will be flaky if its minimum dimension is less than -
Question 142 of 361
142. Question
If the foundations of all the columns of a structure are designed on the total live and dead load
basis, then -
Question 143 of 361
143. Question
Saw dust can be rendered chemically inert by boiling it in water containing
-
Question 144 of 361
144. Question
A concrete having a slump of 6.5 cm, is said to be
-
Question 145 of 361
145. Question
Shrinkage of concrete depends upon
(i) Humidity of atmosphere
(ii) Passage of time
(iii) Stress
The correct answer is -
Question 146 of 361
146. Question
To obtain a very high strength concrete, use very fine grained
-
Question 147 of 361
147. Question
Vicat apparatus is used for
-
Question 148 of 361
148. Question
Which of the following losses of pre-stress occurs only in pre-tensioning and not in posttensioning?
-
Question 149 of 361
149. Question
The type of aggregates of same nominal size, which contain less voids when compacted, are
-
Question 150 of 361
150. Question
Pick up the correct statement from the following:
-
Question 151 of 361
151. Question
Pre-stress loss due to friction occurs
-
Question 152 of 361
152. Question
Pick up the correct statement from the following:
-
Question 153 of 361
153. Question
In the method of voids for determination of the quantity of cement paste, it is assumed that
-
Question 154 of 361
154. Question
As compared to ordinary Portland cement, use of pozzolana cement
-
Question 155 of 361
155. Question
The following proportion of the ingredients of concrete mix, is not in conformation to arbitrary
method of proportioning -
Question 156 of 361
156. Question
The strength and quality of concrete, depend upon:
-
Question 157 of 361
157. Question
The factor of safety for
-
Question 158 of 361
158. Question
The preliminary test is repeated if the difference of compressive strength of three test specimens,
exceeds -
Question 159 of 361
159. Question
Setting time of cement increases by adding
-
Question 160 of 361
160. Question
According to IS: 4561978, the maximum reinforcement in a column is
-
Question 161 of 361
161. Question
According to the recommendations of IS : 456-1978, the expansion joints
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Question 162 of 361
162. Question
The impurity of mixing water which affects the setting time and strength of concrete, is
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Question 163 of 361
163. Question
If the size of panel in a flat slab is 6 m × 6 m, then as per Indian Standard Code, the widths of
column strip and middle strip are -
Question 164 of 361
164. Question
Pick up the incorrect statement from the following:
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Question 165 of 361
165. Question
The concrete mix which causes difficulty in obtaining a smooth finish, possess
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Question 166 of 361
166. Question
While designing the pile as a column, the end conditions are nearly
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Question 167 of 361
167. Question
The internal dimensions of a ware house are 15 m × 5.6 m, and the maximum height of piles is
2.70 m, the maximum number of bags to be stored in two piles, are -
Question 168 of 361
168. Question
Pick up the incorrect statement from the following. While performing preliminary test on concrete
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Question 169 of 361
169. Question
In a spherical dome the hoop stress due to a concentrated load at crown is
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Question 170 of 361
170. Question
I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of
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Question 171 of 361
171. Question
Log Angles machine is used to test the aggregate for
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Question 172 of 361
172. Question