MCQOPTIONS
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MCQOPTIONS
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 | |
| 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 | |
| 3. |
The average specific gravity of natural aggregate is? |
| A. | 2.7 |
| B. | 3 |
| C. | 1.5 |
| D. | 1 |
| Answer» B. 3 | |
| 4. |
S.I. unit of bulk density is? |
| A. | kg/l |
| B. | g/ml |
| C. | kg/ml |
| D. | g/l |
| Answer» B. g/ml | |
| 5. |
The use of crushed aggregates may results in 10 to 20% higher compressive strength. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The unit weight of heavy weight concrete varies from __________ kg/m3. |
| A. | 1000 |
| B. | 2400 |
| C. | 2000 |
| D. | 1400 |
| Answer» C. 2000 | |
| 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. | |
| 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 | |
| 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 | |
| 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 | |
| 11. |
The average specific gravity of natural aggregate is: |
| A. | 2.7 |
| B. | 3 |
| C. | 1.5 |
| D. | 1 |
| Answer» B. 3 | |
| 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 | |
| 13. |
S.I. unit of bulk density |
| A. | kg/l |
| B. | g/ml |
| C. | kg/ml |
| D. | g/l |
| Answer» B. g/ml | |
| 14. |
The unit weight of heavy weight concrete varies from __________ kg/m3. |
| A. | 1000 |
| B. | 2400 |
| C. | 2000 |
| D. | 1400 |
| Answer» C. 2000 | |
| 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. | |
| 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> | |