Top 250+ Solved Concrete Technology MCQ Questions Answer
Q. Plain cement concrete is strong in taking
a. tensile stress
b. compressive stress
c. shear stress
d. all of these
Q. As per IS : 459-1978, the concrete mixes are designated into
a. 4 grades
b. 5 grades
c. 6 grades
d. 7 grades
Q. The factor which effect the quality of compaction, is
a. density of concrete
b. strength of concrete
c. durability of concrete
d. all of these
Q. The top diameter, bottom diameter and height of the mould used for slump test are respectively
a. 100 mm, 200 mm, 300 mm
b. 200 mm, 100 mm, 300 mm
c. 200 mm, 300 mm, 100 mm
d. 100 mm, 300 mm, 200 mm
Q. The aggregate which pass through 75 mm IS sieve and entirely retain on 4.75 mm IS sieve is known as
a. cyclopean aggregate
b. coarse aggregate
c. fine aggregate
d. all-in-aggregate
Q. Weight batching is done by
a. spring dial scale
b. platform weighing machine
c. portable weigh batchers
d. all of these
Q. The first compound which reacts with water when mixed with cement is tricalcium aluminate.
a. Correct
b. Incorrect
Q. An aggregate which may contain some moisture in the pores but having dry surface is known as
a. very dry aggregate
b. dry aggregate
c. saturated surface dry aggregate
d. moist aggregate
Q. Proper curing of cement concrete, is good for its
a. volume stability
b. strength
c. wear resistance
d. all of these
Q. Hydration of cement is due to the chemical action of water with
a. dicalcium silicate
b. tricalcium silicate
c. tricalcium aluminate
d. all of these
Q. The cement concrete in which high compressive stresses are artificially induced before its actual use, is called
a. plain cement concrete
b. reinforced cement concrete
c. prestressed cement concrete
d. lime concrete
Q. The fineness modulus of an aggregate is roughly proportional to
a. specific gravity of the aggregate
b. shape of the aggregate
c. average size of particles in the aggregate
d. grading of the aggregate
Q. The water used for ordinary concrete is equal to 5% by weight of aggregate plus
a. 10%
b. 20%
c. 30%
d. 40%
Q. Which of the following statement is wrong?
a. The concrete can not be pumped.
b. The concrete should have maximum creep.
c. The concrete structures can be put to use immediately ater their construction.
d. all of the above