Top 350+ Solved Concrete Technology and Design MCQ Questions Answer
Q. 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
Q. 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
Q. 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
Q. Normally pre-stressing wires are arranged in the
a. upper part of the beam
b. lower part of the beam
c. center
d. anywhere
Q. Pick up the correct statement from the following:
a. bulking of sand is caused due to formation of a thin film of surface moisture
b. fine sand bulks more than coarse sand
c. the volume of fully saturated sand, is equal to the volume of dry and loose sand
d. all the above
Q. The minimum percentage of chemical ingredient of cement is that of
a. magnesium oxide
b. iron oxide
c. alumina
d. lime
Q. Poisson's ratio for concrete
a. remains constant
b. increases with richer mixes
c. decreases with richer mixes
d. none of the above
Q. 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
Q. 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
Q. 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
Q. 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
Q. 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
Q. 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