Top 350+ Solved Concrete Technology and Design MCQ Questions Answer
Q. For the design of retaining walls, the minimum factor of safety against overturning is taken as
a. 1.5
b. 2.0
c. 2.5
d. 3.0
Q. If the foundations of all the columns of a structure are designed on the total live and dead loadbasis, then
a. there will be no settlement of columns
b. there will be no differential settlement
c. the settlement of exterior columns will be more than interior columns
d. the settlement of interior columns will be more than exterior columns
Q. Saw dust can be rendered chemically inert by boiling it in water containing
a. ferrous sulphate
b. potassium chloride
c. ammonia
d. nitric acid
Q. A concrete having a slump of 6.5 cm, is said to be
a. dry
b. earth moist
c. semi-plastic
d. plastic
Q. To obtain a very high strength concrete, use very fine grained
a. granite
b. magnetite
c. barite
d. volcanic scoria
Q. Vicat apparatus is used for
a. fineness test
b. consistency test
c. test for setting time
d. test for tensile strength
Q. Which of the following losses of pre-stress occurs only in pre-tensioning and not in posttensioning?
a. elastic shortening of concrete
b. shrinkage of concrete
c. creep of concrete
d. loss due to friction
Q. The type of aggregates of same nominal size, which contain less voids when compacted, are
a. rounded spherical
b. irregular
c. flaky
d. none of these
Q. Pre-stress loss due to friction occurs
a. only in post-tensioned beams
b. only in pre-tensioned beams
c. in both post-tensioned and pre-tensioned beams
d. none of the above
Q. Pick up the correct statement from the following:
a. an increase in water content must be accompanied by an increase in cement content
b. angular and rough aggregates reduce the workability of the concrete
c. the slump of the concrete mix decreases due to an increase in temperature
d. all the above
Q. In the method of voids for determination of the quantity of cement paste, it is assumed that
a. voids in coarse aggregates are filled by fine aggregates
b. voids in fine aggregates are filled by the cement paste
c. volume of fine aggregates is equal to total voids in coarse aggregates plus 10% extra
d. all the above
Q. As compared to ordinary Portland cement, use of pozzolana cement
a. reduces workability
b. increases bleeding
c. increases shrinkage
d. increases strength
Q. The following proportion of the ingredients of concrete mix, is not in conformation to arbitrarymethod of proportioning
a. 1 : 1 : 2
b. 1 : 2 : 4
c. 1 : 3 : 6
d. 1 : 4 : 10