Explore topic-wise MCQs in Concrete Technology.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Concrete Technology knowledge and support exam preparation. Choose a topic below to get started.

1.

Minute spherical bubbles of size ranging from ______________ microns.

A. 1-100
B. 5-80
C. 15-20
D. 50-60
Answer» C. 15-20
Discussion
2.

Retarders used at grouting oil wells, where temperature is about _____________ oC.

A. 100
B. 150
C. 200
D. 250
Answer» D. 250
Discussion
3.

Setting time of cement increases by adding ____________

A. Gypsum
B. CaCl<sub>2</sub>
C. NaOH
D. Hydrogen peroxide
Answer» B. CaCl<sub>2</sub>
Discussion
4.

At normal temperatures addition of sugar _____________ per cent have little effect on the rate of hydration.

A. .5-1
B. 1-2
C. .05-.1
D. .1-.2
Answer» D. .1-.2
Discussion
5.

Retarders are used to ___________

A. Offset the accelerating effect of cold weather on the setting of concrete
B. Offset the accelerating effect of hot weather on the setting of concrete
C. Offset the Retarding effect of cold weather on the setting of concrete
D. Offset the Retarding effect of hot weather on the setting of concrete
Answer» C. Offset the Retarding effect of cold weather on the setting of concrete
Discussion
6.

Zinc is the example of retenders.

A. True
B. False
Answer» B. False
Discussion