McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 101. |
Workability reduces with time. |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» A. True | |
| 102. |
M15 concrete is used for: |
| A. | Dams |
| B. | Foundation |
| C. | R.C.C |
| D. | Mass concreting works |
| Answer» B. Foundation | |
| 103. |
Which acid is used for the acid itching? |
| A. | 10% HCL |
| B. | 5% HCL |
| C. | 8% HCL |
| D. | 20% HCL |
| Answer» A. 10% HCL | |
| 104. |
Which NDT test used a chemical attack method? |
| A. | load test |
| B. | ultrasonic test |
| C. | chloride test |
| D. | none of the above |
| Answer» C. chloride test | |
| 105. |
Which NDT test work on the principle of rebound of the elastic mass? |
| A. | hammer test |
| B. | ultrasonic test |
| C. | chloride test |
| D. | none of the above |
| Answer» A. hammer test | |
| 106. |
What is average rebound number for low quality concrete? |
| A. | < 20 |
| B. | > 10 |
| C. | <50 |
| D. | 50 |
| Answer» A. < 20 | |
| 107. |
What is a frequency range for ultrasonic test? |
| A. | 15-125 kHz |
| B. | 15-175 kHz |
| C. | 50-175 kHz |
| D. | 15-100 kHz |
| Answer» B. 15-175 kHz | |
| 108. |
DTA stands for Differential Thermal Analysis. |
| A. | true |
| B. | false |
| C. | none |
| D. | all |
| Answer» A. true | |
| 109. |
What is minimum size of core sample in core sampling method? |
| A. | 110 mm |
| B. | 100 mm |
| C. | 50 mm |
| D. | 120 mm |
| Answer» B. 100 mm | |
| 110. |
Which method used for the fire damage assessment? |
| A. | TDA |
| B. | XRD |
| C. | DTA |
| D. | all |
| Answer» D. all | |
| 111. |
Which component in sea water is responsible for the erosion in concrete? |
| A. | calcium hydroxide |
| B. | sulfate |
| C. | a & b both |
| D. | none of the above |
| Answer» C. a & b both | |
| 112. |
Due to the sulfate attack calcium sulfate is generates inside the concrete. |
| A. | true |
| B. | false |
| C. | none |
| D. | all |
| Answer» A. true | |
| 113. |
What is main component of acid rain? |
| A. | sulfuric acid |
| B. | nitric acid |
| C. | a & b both |
| D. | none of the above |
| Answer» C. a & b both | |
| 114. |
What is melting point (in degree Celsius) of the lime stone? |
| A. | 900 |
| B. | 1200 |
| C. | 800 |
| D. | 500 |
| Answer» A. 900 | |
| 115. |
Which factors affect the carbonation of the concrete? |
| A. | grade |
| B. | permeability |
| C. | relative humidity |
| D. | all of the above |
| Answer» D. all of the above | |
| 116. |
How much SO3 is necessary in concrete to reduce its erosion? |
| A. | < 0.04 m |
| B. | >0.04 m |
| C. | 0.05 m |
| D. | < 0.05m |
| Answer» A. < 0.04 m | |
| 117. |
Alkaline aggregate reaction is main reason for generation of K2O inside the concrete. |
| A. | true |
| B. | false |
| C. | none |
| D. | all |
| Answer» A. true | |
| 118. |
Which compound is responsible for sulfate attract inside a concrete? |
| A. | gypsum |
| B. | K2O |
| C. | K3O |
| D. | none of the above |
| Answer» A. gypsum | |
| 119. |
Which compound is responsible for efflorescence inside a concrete? |
| A. | Ca(OH)2 |
| B. | K2O |
| C. | K3O |
| D. | none of the above |
| Answer» A. Ca(OH)2 | |
| 120. |
Which factor does not affect the thermal conductivity of the concrete? |
| A. | humidity |
| B. | volume |
| C. | density |
| D. | temperature |
| Answer» B. volume | |
| 121. |
What is specific heat (in J/Kg C) of the concrete? |
| A. | 840 – 1170 |
| B. | 850 – 1170 |
| C. | 840 – 1120 |
| D. | 840 – 1270 |
| Answer» A. 840 – 1170 | |
| 122. |
Thermal expansion in concrete means____ |
| A. | change in area with change in temperature |
| B. | change in temperature with change in density |
| C. | change in humidity with change in density |
| D. | none of the above |
| Answer» A. change in area with change in temperature | |
| 123. |
What is thermal expansion (in area per temp.) of the concrete? |
| A. | 0.002 to 0.008 |
| B. | 0.002 to 0.010 |
| C. | 0.002 to 0.006 |
| D. | 0.004 to 0.006 |
| Answer» C. 0.002 to 0.006 | |
| 124. |
What is main reason for thermal movement in concrete? |
| A. | heat of hydration |
| B. | temperature |
| C. | fire outside a concrete |
| D. | all of the above |
| Answer» D. all of the above | |
| 125. |
Which chemical reaction responsible for the corrosion in RCC? |
| A. | oxidization |
| B. | reduction |
| C. | radiation |
| D. | carbonization |
| Answer» A. oxidization | |
| 126. |
What is main reason for crack generation in concrete? |
| A. | movement of humidity |
| B. | sleep |
| C. | difference in temperature |
| D. | all of the above |
| Answer» D. all of the above | |
| 127. |
PMM stands for the Polymer modified mortar. |
| A. | true |
| B. | false |
| C. | none |
| D. | all |
| Answer» A. true | |
| 128. |
Which material is used for the plasticizers in concrete? |
| A. | POP |
| B. | calcium |
| C. | sodium |
| D. | ammonia |
| Answer» A. POP | |
| 129. |
Epoxy resins have_________. |
| A. | poor mechanical strength |
| B. | poor thermal strength |
| C. | low tensile strength |
| D. | none of the above |
| Answer» B. poor thermal strength | |
| 130. |
Who is responsible for the combination of the polymer particles? |
| A. | monomer |
| B. | nanomer |
| C. | tetramer |
| D. | crystal |
| Answer» A. monomer | |
| 131. |
In cathode protection method, by____________ we can reduce the corrosion in steel. |
| A. | increasing a electrical potential |
| B. | decreasing a electrical potential |
| C. | zeroing a electrical potential |
| D. | neutralizing a electrical potential |
| Answer» B. decreasing a electrical potential | |
| 132. |
Which metal is used for making a foamed concrete? |
| A. | aluminium |
| B. | zinc |
| C. | a & b both |
| D. | none of the above |
| Answer» C. a & b both | |
| 133. |
Vacuum concrete is used for_____ |
| A. | making thin section |
| B. | more removing a extra water from the concrete |
| C. | when water cement ration is in between 0.5 to 0.65 |
| D. | all of the above |
| Answer» D. all of the above | |
| 134. |
Which equipment is used for the grouting? |
| A. | heater |
| B. | compressor |
| C. | grout pump |
| D. | all of the above |
| Answer» D. all of the above | |
| 135. |
Which method is not use for the underpinning? |
| A. | heating method |
| B. | frizzing method |
| C. | pit method |
| D. | all of the above |
| Answer» A. heating method | |
| 136. |
Method of strengthen a weak part of the building is known as________ |
| A. | restoration |
| B. | repair |
| C. | retrofitting |
| D. | maintenance |
| Answer» A. restoration | |
| 137. |
What is minimum projection of beam for earthquake protection? ( L= length of beam) |
| A. | L/3 |
| B. | L/2 |
| C. | L |
| D. | 2L |
| Answer» A. L/3 | |
| 138. |
According to IS : 4326-1993, what is earthquake resistance of C category buildings? |
| A. | 0.05 – 0.08 |
| B. | 0.03 – 0.08 |
| C. | 0.06 – 0.08 |
| D. | 0.06 – 0.09 |
| Answer» C. 0.06 – 0.08 | |
| 139. |
PVAC stand for Polyvinyl Acetate. |
| A. | true |
| B. | false |
| C. | none |
| D. | all |
| Answer» A. true | |
| 140. |
What is cement to sand ratio for the mortar used in the repair work of the brick masonry? |
| A. | 1:3 |
| B. | 2:3 |
| C. | 1:5 |
| D. | 5:3 |
| Answer» A. 1:3 | |
| 141. |
Remove a hole building or part of building in control way is known as ________ |
| A. | restoration |
| B. | demolition |
| C. | retrofitting |
| D. | maintenance |
| Answer» B. demolition | |
| 142. |
Which factors affect the selection of the demolition techniques? |
| A. | size of the building |
| B. | shape of the building |
| C. | available time |
| D. | all of the above |
| Answer» D. all of the above | |
| 143. |
What is minimum distance between building and road, necessary in the case of push arm technique? |
| A. | 5m |
| B. | 3m |
| C. | 8m |
| D. | 10m |
| Answer» B. 3m | |
| 144. |
When explosion is used for the demolition of the building, than this technique is known as___ |
| A. | implosion technique |
| B. | pressure jetting |
| C. | push arm method |
| D. | none of the above |
| Answer» A. implosion technique | |
| 145. |
Which factor does not affect the quantity of the explosive material? |
| A. | column size |
| B. | column shape |
| C. | size of demolition |
| D. | depth of the hole |
| Answer» D. depth of the hole | |
| 146. |
Which equipment used for starting the explosion in explosive material? |
| A. | detonators |
| B. | starting cap |
| C. | current switch |
| D. | none of the above |
| Answer» A. detonators | |
| 147. |
What is main purpose of test blasting? |
| A. | to decide effectiveness of explosion |
| B. | to decide a quality of explosion |
| C. | to decide a size of explosion |
| D. | to decide a cost of explosion |
| Answer» A. to decide effectiveness of explosion | |
| 148. |
What is the direction of manual demolition? |
| A. | top to bottom |
| B. | left to right |
| C. | right to left |
| D. | any direction |
| Answer» A. top to bottom | |
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