Top 350+ Solved Concrete Technology and Design MCQ Questions Answer
Q. Minimum grade of concrete to be used in reinforced concrete as per IS: 4561978 is
a. m 15
b. m 20
c. m 10
d. m 25
Q. While compacting the concrete by a mechanical vibrator, the slump should not exceed
a. 2.5 cm
b. 5.0 cm
c. 7.5 cm
d. 10 cm
Q. Non-uniform compaction may cause the concrete
a. porous
b. non-homogeneous
c. reduced strength
d. all the above
Q. Modulus of rupture of concrete is a measure of
a. flexural tensile strength
b. direct tensile strength
c. compressive strength
d. split tensile strength
Q. M10 grade of concrete approximates
a. 1 : 3 : 6 mix
b. 1 : 1 : 2 mix
c. 1 : 2 : 4 mix
d. 1 : 1.5 : 3 mix
Q. Higher workability of concrete is required if the structure is
a. made with cement concrete
b. thick and reinforced
c. thin and heavily reinforced
d. thick and heavily reinforced
Q. For a cantilever of effective depth of 0.5 m, the maximum span to satisfy vertical deflection limit is
a. 3.5 m
b. 4 m
c. 4.5 m
d. 5 m
Q. The bulk density of aggregates does not depend upon:
a. size and shape of aggregates
b. specific gravity of aggregates
c. grading of aggregates
d. size and shape of the container
Q. How long will it take for the concrete to achieve 100% of its strength?
a. 7 days
b. 14 days
c. 21 days
d. 28 days
Q. A higher modular ratio shows
a. higher compressive strength of concrete
b. lower compressive strength of concrete
c. higher tensile strength of steel
d. lower tensile strength of steel
Q. For the construction of cement concrete floor, the maximum permissible size of aggregate, is
a. 4 mm
b. 6 mm
c. 8 mm
d. 10 mm
Q. The specifications of a cement bag for storage, are
a. weight 50 kg
b. height 18 cm
c. plan area 3000 sq. cm
d. all the above
Q. The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on
a. top face perpendicular to wall
b. bottom face perpendicular to wall
c. both top and bottom faces perpendicular to wall
d. none of the above
Q. Separation of coarse aggregates from mortar during transportation, is known
a. bleeding
b. creeping
c. segregation
d. shrinkage