MCQOPTIONS
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MCQOPTIONS
This section includes 298 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The condition not applicable to water cement ratio law, is |
| A. | internal moisture conditions on hydration continue till complete strength is gained |
| B. | concrete specimens may be tested at any temperature |
| C. | concrete specimens need be of same age |
| D. | concrete specimens need be of same size |
| Answer» C. concrete specimens need be of same age | |
| 102. |
According to Whitney's theory, ultimate strain of concrete is assumed to be |
| A. | 0.03 % |
| B. | 0.1 % |
| C. | 0.3 % |
| D. | 3 % |
| Answer» D. 3 % | |
| 103. |
Sands of zone I are: |
| A. | course |
| B. | medium |
| C. | medium to fine |
| D. | fine |
| Answer» B. medium | |
| 104. |
According to Water-Cement Ratio Law, the strength of workable plastic concrete |
| A. | depends upon the amount of water used in the mix |
| B. | does not depend upon the quality of cement mixed with aggregates |
| C. | does not depend upon the quantity of cement mixed with aggregates |
| D. | all the above |
| Answer» E. | |
| 105. |
The minimum cover to the ties or spirals should not be less than |
| A. | 15 mm |
| B. | 20 mm |
| C. | 25 mm |
| D. | 50 mm |
| Answer» D. 50 mm | |
| 106. |
If 50 kg of fine aggregates and 100 kg of coarse aggregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is |
| A. | 8 kg |
| B. | 10 kg |
| C. | 12 kg |
| D. | 14 kg |
| Answer» D. 14 kg | |
| 107. |
Addition of pozzolana to cement |
| A. | decreases workability |
| B. | increases strength |
| C. | increases heat of hydration |
| D. | none of these |
| Answer» E. | |
| 108. |
The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than |
| A. | 0.15 |
| B. | 0.12 |
| C. | 0.30 |
| D. | 1.00 |
| Answer» C. 0.30 | |
| 109. |
Ordinary Portland cement is manufactured from |
| A. | lime stone and clay |
| B. | gypsum and lime |
| C. | pozzolana |
| D. | lime, pozzolana and clay |
| Answer» C. pozzolana | |
| 110. |
If a beam fails in bond, then its bond strength can be increased most economically by |
| A. | increasing the depth of beam |
| B. | using thinner bars but more in number |
| C. | using thicker bars but less in number |
| D. | providing vertical stirrups |
| Answer» C. using thicker bars but less in number | |
| 111. |
Inert material of a cement concrete mix, is |
| A. | water |
| B. | cement |
| C. | aggregate |
| D. | none of these |
| Answer» D. none of these | |
| 112. |
Workability of concrete is inversely proportional to |
| A. | time of transit |
| B. | water-cement ratio |
| C. | the air in the mix |
| D. | size of aggregate |
| Answer» B. water-cement ratio | |
| 113. |
An aggregate is said to be flaky if its least dimension is less than |
| A. | 1/5th of mean dimension |
| B. | 2/5th of mean dimension |
| C. | 3/5th of mean dimension |
| D. | 4/5th of mean dimension |
| Answer» D. 4/5th of mean dimension | |
| 114. |
The approximate value of the ratio between direct tensile strength and flexural strength is |
| A. | 0.33 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 1.0 |
| Answer» C. 0.75 | |
| 115. |
Workability improved by adding |
| A. | fly ash |
| B. | hydrated lime |
| C. | calcium chloride |
| D. | all the above |
| Answer» E. | |
| 116. |
The shuttering of a hall measuring 4 m × 5 m, can be removed after |
| A. | 5 days |
| B. | 7 days |
| C. | 10 days |
| D. | 14 days |
| Answer» C. 10 days | |
| 117. |
Shrinkage in concrete can be reduced by using |
| A. | low water cement ratio |
| B. | less cement in the concrete |
| C. | proper concrete mix |
| D. | all the above |
| Answer» E. | |
| 118. |
Poisson's ratio for concrete |
| A. | remains constant |
| B. | increases with richer mixes |
| C. | decreases with richer mixes |
| D. | none of the above |
| Answer» C. decreases with richer mixes | |
| 119. |
The minimum percentage of chemical ingredient of cement is that of |
| A. | magnesium oxide |
| B. | iron oxide |
| C. | alumina |
| D. | lime |
| Answer» B. iron oxide | |
| 120. |
An ideal ware house, is provided |
| A. | water proof masonry walls |
| B. | water proof roof |
| C. | few windows which remain generally closed |
| D. | all the above |
| Answer» E. | |
| 121. |
You are asked to construct a massive dam, the type of cement you will use, is |
| A. | ordinary portland cement |
| B. | rapid hardening cement |
| C. | low heat cement |
| D. | blast furnace slag cement |
| Answer» D. blast furnace slag cement | |
| 122. |
Normally pre-stressing wires are arranged in the |
| A. | upper part of the beam |
| B. | lower part of the beam |
| C. | center |
| D. | anywhere |
| Answer» C. center | |
| 123. |
A flaky aggregate is said to be elongated if its length is |
| A. | equal to the mean size |
| B. | twice the mean size |
| C. | thrice the mean size |
| D. | four times the mean size |
| Answer» C. thrice the mean size | |
| 124. |
Separation of coarse aggregates from mortar during transportation, is known |
| A. | bleeding |
| B. | creeping |
| C. | segregation |
| D. | shrinkage |
| Answer» D. shrinkage | |
| 125. |
The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on |
| A. | top face perpendicular to wall |
| B. | bottom face perpendicular to wall |
| C. | both top and bottom faces perpendicular to wall |
| D. | none of the above |
| Answer» B. bottom face perpendicular to wall | |
| 126. |
The specifications of a cement bag for storage, are |
| A. | weight 50 kg |
| B. | height 18 cm |
| C. | plan area 3000 sq. cm |
| D. | all the above |
| Answer» E. | |
| 127. |
For the construction of cement concrete floor, the maximum permissible size of aggregate, is |
| A. | 4 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» E. | |
| 128. |
How long will it take for the concrete to achieve 100% of its strength? |
| A. | 7 days |
| B. | 14 days |
| C. | 21 days |
| D. | 28 days |
| Answer» E. | |
| 129. |
The bulk density of aggregates does not depend upon: |
| A. | size and shape of aggregates |
| B. | specific gravity of aggregates |
| C. | grading of aggregates |
| D. | size and shape of the container |
| Answer» E. | |
| 130. |
For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is |
| A. | 3.5 m |
| B. | 4 m |
| C. | 4.5 m |
| D. | 5 m |
| Answer» B. 4 m | |
| 131. |
A higher modular ratio shows |
| A. | higher compressive strength of concrete |
| B. | lower compressive strength of concrete |
| C. | higher tensile strength of steel |
| D. | lower tensile strength of steel |
| Answer» C. higher tensile strength of steel | |
| 132. |
Higher workability of concrete is required if the structure is |
| A. | made with cement concrete |
| B. | thick and reinforced |
| C. | thin and heavily reinforced |
| D. | thick and heavily reinforced |
| Answer» E. | |
| 133. |
M10 grade of concrete approximates |
| A. | 1 : 3 : 6 mix |
| B. | 1 : 1 : 2 mix |
| C. | 1 : 2 : 4 mix |
| D. | 1 : 1.5 : 3 mix |
| Answer» B. 1 : 1 : 2 mix | |
| 134. |
Modulus of rupture of concrete is a measure of |
| A. | flexural tensile strength |
| B. | direct tensile strength |
| C. | compressive strength |
| D. | split tensile strength |
| Answer» B. direct tensile strength | |
| 135. |
Non-uniform compaction may cause the concrete |
| A. | porous |
| B. | non-homogeneous |
| C. | reduced strength |
| D. | all the above |
| Answer» E. | |
| 136. |
While compacting the concrete by a mechanical vibrator, the slump should not exceed |
| A. | 2.5 cm |
| B. | 5.0 cm |
| C. | 7.5 cm |
| D. | 10 cm |
| Answer» C. 7.5 cm | |
| 137. |
Minimum grade of concrete to be used in reinforced concrete as per IS: 4561978 is |
| A. | m 15 |
| B. | m 20 |
| C. | m 10 |
| D. | m 25 |
| Answer» B. m 20 | |
| 138. |
Sand requiring a high water cement ratio, belongs to |
| A. | zone i |
| B. | zone ii |
| C. | zone iii |
| D. | zone iv |
| Answer» B. zone ii | |
| 139. |
The high strength of rapid hardening cement at early stage, is due to its |
| A. | finer grinding |
| B. | burning at high temperature |
| C. | increased lime cement |
| D. | higher content of tricalcium |
| Answer» D. higher content of tricalcium | |
| 140. |
The minimum diameter of longitudinal bars in a column is |
| A. | 6 mm |
| B. | 8 mm |
| C. | 12 mm |
| D. | 16 mm |
| Answer» D. 16 mm | |
| 141. |
Permissible compressive strength of M 200 concrete grade is |
| A. | 100 kg/cm2 |
| B. | 150 kg/cm2 |
| C. | 200 kg/cm2 |
| D. | 250 kg/cm2 |
| Answer» D. 250 kg/cm2 | |
| 142. |
Addition of pozzolana to cement causes |
| A. | reduction in permeability |
| B. | loss of heat of hydration |
| C. | reduction in bleeding |
| D. | all the above |
| Answer» E. | |
| 143. |
Stress strain curve of high tensile steel |
| A. | has a definite yield point |
| B. | does not show definite yield point but yield point is defined by 0.1% proof stress |
| C. | does not show definite yield point but yield point is defined by 0.2% proof stress |
| D. | does not show definite yield point but yield point is defined by 2% proof stress, |
| Answer» D. does not show definite yield point but yield point is defined by 2% proof stress, | |
| 144. |
Horizontal construction joints in concrete walls are generally provided at |
| A. | soffit level |
| B. | window sill level |
| C. | floor level |
| D. | all the above |
| Answer» E. | |
| 145. |
High temperature |
| A. | increases the strength of concrete |
| B. | decreases the strength of concrete |
| C. | has no effect on the strength of concrete |
| D. | none of these |
| Answer» C. has no effect on the strength of concrete | |
| 146. |
On a grading curve, the gap grading is represented by |
| A. | a horizontal line |
| B. | a vertical line |
| C. | n.w. inclined line |
| D. | n.e. inclined line |
| Answer» B. a vertical line | |
| 147. |
Separation of water or water sand cement from a freshly concrete, is known |
| A. | bleeding |
| B. | creeping |
| C. | segregation |
| D. | flooding |
| Answer» B. creeping | |
| 148. |
The critical section for finding maximum bending moment for footing under masonry wall is located |
| A. | at the middle of the wall |
| B. | at the edge of the wall |
| C. | halfway between the middle and edge of the wall |
| D. | at a distance equal to effective depth of footing from the edge of the wall |
| Answer» D. at a distance equal to effective depth of footing from the edge of the wall | |
| 149. |
Expansion joints are provided if the length of concrete structures exceeds |
| A. | 10 m |
| B. | 15 m |
| C. | 15 m |
| D. | 45 m |
| Answer» E. | |
| 150. |
The permissible diagonal tensile stress in reinforced brick work is |
| A. | about 0.1 n/mm² |
| B. | zero |
| C. | 0.3 n/mm² to 0.7 n/mm² |
| D. | about 1.0 n/mm² |
| Answer» B. zero | |