Explore topic-wise MCQs in Concrete Technology.

This section includes 17 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.

According to IRC:15-2011, maximum free W/C ratio for PPC is _________

A. 0.45
B. .4
C. .5
D. .55
Answer» D. .55
Discussion
2.

According to IRC:15-2011, maximum free W/C ratio for OPC is ________________

A. 0.45
B. .4
C. .5
D. .55
Answer» B. .4
Discussion
3.

According to IRC:15-2011, Minimum cement content for 4.5 N/mm2 characteristic flexural strength for OPC + fly ash mix OPC shall ____________

A. Shall not be less than 360 kg/m3
B. Shall not be less than 425 kg/m3
C. Shall not be less than 340 kg/m3
D. Shall not be less than 500 kg/m3
Answer» D. Shall not be less than 500 kg/m3
Discussion
4.

According to IRC:15-2011, Minimum cement content for 4.5 N/mm2 characteristic flexural strength for PPC shall _________

A. Shall not be less than 360 kg/m3
B. Shall not be less than 425 kg/m3
C. Shall not be less than 340 kg/m3
D. Shall not be less than 500 kg/m3
Answer» C. Shall not be less than 340 kg/m3
Discussion
5.

According to IRC:15-2011, Maximum nominal size of aggregates is ________

A. 20 mm crushed aggregates
B. 31.5 mm crushed aggregates
C. 25 mm crushed aggregates
D. 30.5 mm crushed aggregates
Answer» C. 25 mm crushed aggregates
Discussion
6.

According to IRC:15-2002 _______% Fly ash is required to be replaced with the total cementitious materials.

A. 15
B. 20
C. 25
D. 30
Answer» D. 30
Discussion
7.

According to IRC:15-2011 _______% Fly ash is required to be replaced with the total cementitious materials.

A. 15
B. 20
C. 25
D. 30
Answer» C. 25
Discussion
8.

According to IRC:15-2011, Characteristic Flexural Strength at 28 days is ____________

A. 4 N/mm2
B. 4.5 N/mm2
C. 5 N/mm2
D. 3.5 N/mm2
Answer» C. 5 N/mm2
Discussion
9.

ACCORDING_TO_IRC:15-2011,_MAXIMUM_FREE_W/C_RATIO_FOR_OPC_IS_________________?$

A. .45
B. .4
C. .5
D. .55
Answer» B. .4
Discussion
10.

According_to_IRC:15-2011,_maximum_free_W/C_ratio_for_PPC_is__________$

A. .45
B. .4
C. .5
D. .55
Answer» D. .55
Discussion
11.

According to IRC:15-2011, Minimum cement content for 4.5 N/mm2 characteristic flexural strength for OPC + fly ash mix OPC shall ___________?

A. Shall not be less than 360 kg/ m<sup>3</sup>
B. Shall not be less than 425 kg/ m<sup>3</sup>
C. Shall not be less than 340 kg/ m<sup>3</sup>
D. Shall not be less than 500 kg/m<sup>3</sup>
Answer» D. Shall not be less than 500 kg/m<sup>3</sup>
Discussion
12.

According to IRC:15-2011, Minimum cement content for 4.5 N/mm2 characteristic flexural strength for PPC shall _________

A. Shall not be less than 360 kg/ m<sup>3</sup>
B. Shall not be less than 425 kg/ m<sup>3</sup>
C. Shall not be less than 340 kg/ m<sup>3</sup>
D. Shall not be less than 500 kg/m<sup>3</sup>
Answer» C. Shall not be less than 340 kg/ m<sup>3</sup>
Discussion
13.

According to IRC:15-2011, Minimum cement content for 4.5 N/mm2 characteristic flexural strength for OPC shall _____________

A. Shall not be less than 360 kg/ m<sup>3</sup>
B. Shall not be less than 425 kg/ m<sup>3</sup>
C. Shall not be less than 340 kg/ m<sup>3</sup>
D. Shall not be less than 500 kg/m<sup>3</sup>
Answer» B. Shall not be less than 425 kg/ m<sup>3</sup>
Discussion
14.

According to IRC:15-2011, Maximum nominal size of aggregates

A. 20 mm crushed aggregates
B. 31.5 mm crushed aggregates
C. 25 mm crushed aggregates
D. 30.5 mm crushed aggregates
Answer» C. 25 mm crushed aggregates
Discussion
15.

According to IRC:15-2002, Maximum nominal size of aggregates is ________

A. 20 mm crushed aggregates
B. 31.5 mm crushed aggregates
C. 25 mm crushed aggregates
D. 30.5 mm crushed aggregates
Answer» B. 31.5 mm crushed aggregates
Discussion
16.

According to IRC:15-2011, _______% Fly ash is required to be replaced with the total cementitious materials.

A. 15
B. 20
C. 25
D. 30
Answer» C. 25
Discussion
17.

According to IRC:15-2011, Characteristic Flexural Strength at 28 days

A. 4 N/mm<sup>2</sup>
B. 4.5 N/mm<sup>2</sup>
C. 5 N/mm<sup>2</sup>
D. 3.5 N/mm<sup>2</sup>
Answer» C. 5 N/mm<sup>2</sup>
Discussion