Explore topic-wise MCQs in Concrete Technology.

This section includes 16 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.

Aggregate abrasion value is determined by__________

A. Aggregates crushing strength
B. Los Angeles abrasion test
C. Aggregates Impact value test
D. Ten percent fine test
Answer» C. Aggregates Impact value test
Discussion
2.

The ratio of the mass of the aggregate dried in an oven at ___________ for 24 hours to the mass of the water occupying a volume equal to that of solid.

A. 100-110oC
B. 150-180oC
C. 100oC
D. 1500oC
Answer» B. 150-180oC
Discussion
3.

The average specific gravity of natural aggregate is?

A. 2.7
B. 3
C. 1.5
D. 1
Answer» B. 3
Discussion
4.

S.I. unit of bulk density is?

A. kg/l
B. g/ml
C. kg/ml
D. g/l
Answer» B. g/ml
Discussion
5.

The use of crushed aggregates may results in 10 to 20% higher compressive strength.

A. True
B. False
Answer» B. False
Discussion
6.

The unit weight of heavy weight concrete varies from __________ kg/m3.

A. 1000
B. 2400
C. 2000
D. 1400
Answer» C. 2000
Discussion
7.

The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be _________

A. Between 150 to 300 kg/cm2
B. Between 350 to 600 kg/cm2
C. Between 150 to 400 kg/cm2
D. Less than 200 kg/cm2
Answer» E.
Discussion
8.

Pick up the most appropriate statement from the following.

A. Bulk density of normal weight aggregate is 1600 kg/m3
B. Bulk density of normal weight aggregate is 2000 kg/m3
C. Bulk density of normal weight aggregate is 1000 kg/m3
D. Bulk density of normal weight aggregate is 1250 kg/m3
Answer» B. Bulk density of normal weight aggregate is 2000 kg/m3
Discussion
9.

AGGREGATE_ABRASION_VALUE_IS_DETERMINED_BY__________?$

A. Aggregates crushing strength
B. Los Angeles abrasion test
C. Aggregates Impact value test
D. Ten percent fine test
Answer» C. Aggregates Impact value test
Discussion
10.

The ratio of the mass of the aggregate dried in an oven at ___________ for 24 hours to the mass of the water occupying a volume equal to that of solid?

A. 100-110<sup>o</sup>C
B. 150-180<sup>o</sup>C
C. 100<sup>o</sup>C
D. 1500<sup>o</sup>C
Answer» B. 150-180<sup>o</sup>C
Discussion
11.

The average specific gravity of natural aggregate is:

A. 2.7
B. 3
C. 1.5
D. 1
Answer» B. 3
Discussion
12.

What is void ratio?

A. 1- (bulk density/apparent sp gr)
B. (bulk density/apparent sp gr) -1
C. 1- bulk density/apparent sp gr
D. bulk density/apparent sp gr -1
Answer» B. (bulk density/apparent sp gr) -1
Discussion
13.

S.I. unit of bulk density

A. kg/l
B. g/ml
C. kg/ml
D. g/l
Answer» B. g/ml
Discussion
14.

The unit weight of heavy weight concrete varies from __________ kg/m3.

A. 1000
B. 2400
C. 2000
D. 1400
Answer» C. 2000
Discussion
15.

The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

A. Between 150 to 300 kg/cm<sup>2</sup>
B. Between 350 to 600 kg/cm<sup>2</sup>
C. Between 150 to 400 kg/cm<sup>2</sup>
D. Less than 200 kg/cm<sup>2</sup>
Answer» E.
Discussion
16.

Pick up the most appropriate statement from the following:

A. Bulk density of normal weight aggregate is 1600 kg/m<sup>3</sup>
B. Bulk density of normal weight aggregate is 2000 kg/ m<sup>3</sup>
C. Bulk density of normal weight aggregate is 1000 kg/ m<sup>3</sup>
D. Bulk density of normal weight aggregate is 1250 kg/ m<sup>3</sup>
Answer» B. Bulk density of normal weight aggregate is 2000 kg/ m<sup>3</sup>
Discussion