Top 350+ Solved Concrete Technology and Design MCQ Questions Answer
Q. Curing
a. reduces the shrinkage of concrete
b. preserves the properties of concrete
c. prevents the loss of water by evaporation
d. all of the above
Q. The bulk density of aggregates, is generally expressed as
a. tonnes/cubic metre
b. kg/cubic metre
c. kg/litre
d. g/cm3
Q. For concreting tunnel linings, transportation of concrete is done by
a. pans
b. wheel borrows
c. containers
d. pumps
Q. The factor which affects workability, is
a. water content and its temperature
b. shape and size of the aggregates
c. air entraining agents
d. all the above
Q. Vicat's apparatus is used for
a. fineness test
b. consistency test
c. setting time test
d. soundness test
Q. Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolanacement, is
a. 30 %
b. 40 %
c. 50 %
d. 60 %
Q. Segregation is responsible for
a. honey-combed concrete
b. porous layers in concrete
c. surface scaling in concrete
d. all the above
Q. Slump test of concrete is a measure of its
a. consistency
b. compressive strength
c. tensile strength
d. impact value
Q. If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of aconcrete mixer of 150 litre capacity, is
a. 15,900 litres
b. 16,900 litres
c. 17,900 litres
d. 18,900 litres
Q. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S.sieve No. 9, more than
a. 5 %
b. 10 %
c. 15 %
d. 20 %