Top 250+ Solved Concrete Technology MCQ Questions Answer
Q. The setting time of cement is the governing factor for
a. mixing of concrete
b. placing of concrete
c. compaction of concrete
d. all of these
Q. Bulk specific gravity of an aggregate is defined as
a. the weight of oven dry aggregate divided by its absolute volume, excluding the natural pores in the aggregate particles
b. the weight of oven dry aggregate divided by its absolute volume, including the natural pores in the aggregate particles
c. the weight of aggregate required to fill a container of unit volume
d. the difference in weight of the aggregate in saturated surface dry condition and in moist condition
Q. To control alkali aggregate reaction restricting alkali content in cement below……%
a. 1
b. 0.1
c. 0.5
d. 0.6
Q. If the actual grading curve is steeper than the specified grading curve, it indicates an excess of……..particle size.
a. sand
b. coarser
c. medium
d. cement
Q. To measure workability of concrete in field …………….test is used.
a. Flow test
b. Compacting factor test
c. Slump test
d. All of above
Q. Steel tamping rod of 0.6m length and 16 mm diameter is used for tamping of concrete.
a. False
b. True
c. none
d. all
Q. 25 to 75 mm workability of concrete, indicate
a. High workability
b. Medium workability
c. Low workability
d. Any of this
Q. In very low category of degree of workability determination by compacting factor will be moreappropriate.
a. True
b. False
c. none
d. all
Q. Compacting factor test should be made for concrete with maximum size of aggregate notexceeding 40 mm.
a. True
b. False
c. none
d. all