Top 250+ Solved Concrete Technology MCQ Questions Answer
Q. Separating out of the ingredients of concrete mix from concrete is known as……… .
a. Segregation
b. bleeding
c. separation
d. Any of these
Q. Water from concrete comes out to the surface of the concrete is known as……….
a. Segregation
b. bleeding
c. separation
d. Any of these
Q. Main causes of bleeding :
a. Highly wet mix
b. Badly proportion mix
c. Insufficiently mixed concrete
d. All of this
Q. The formation of cement paste at the surface is known as laitance.
a. True
b. False
c. none
d. all
Q. Workability of concrete is……. to the w/c.
a. proportional
b. inversely proportional
c. none
d. all
Q. Workability of concrete is …….to the strength of concrete.
a. proportional
b. inversely proportional
c. none
d. all
Q. Good method for proportioning the materials.
a. Weight batching
b. Volume batching
c. none
d. all
Q. Concrete mixer are generally designed to run at a speed of ……….. Revolution per minute.
a. 40 to 50
b. 30 to 40
c. 15 to 20
d. 20 to 30
Q. For proper mixing about…………. revolution are required.
a. 40 to 50
b. 30 to 40
c. 15 to 20
d. 25 to 30
Q. Commonly use retarders is……
a. Calcium sulphate
b. Sugars
c. Cellulose products.
d. All of the above