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. |
Due to low w/c ratio _____________ |
| A. | It doesn’t cause any problems |
| B. | It causes problems |
| C. | Workability is easy |
| D. | Strength is more |
| Answer» C. Workability is easy | |
| 2. |
____________ mm nominal maximum size aggregates gives optimum strength. |
| A. | 9.5 and 10.5 |
| B. | 10.5 and 12.5 |
| C. | 9.5 and 12.5 |
| D. | 11.5 and 12.5 |
| Answer» D. 11.5 and 12.5 | |
| 3. |
For high-strength concrete, a cement should produce a minimum 7-days mortar-cube strength of approximately ___ MPa. |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» D. 40 | |
| 4. |
Concrete having 28- days’ compressive strength in the range of 60 to 100 MPa. |
| A. | HPC |
| B. | VHPC |
| C. | OPC |
| D. | HSC |
| Answer» B. VHPC | |
| 5. |
HPC is not used in high span bridges. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
High Performance concrete works out to be economical. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
_____________MM_NOMINAL_MAXIMUM_SIZE_AGGREGATES_GIVES_OPTIMUM_STRENGTH.?$ |
| A. | 9.5 and 10.5 |
| B. | 10.5 and 12.5 |
| C. | 9.5 and 12.5 |
| D. | 11.5 and 12.5 |
| Answer» D. 11.5 and 12.5 | |
| 8. |
Due_to_low_w/c_ratio$ |
| A. | It doesn’t cause any problems |
| B. | It causes problems |
| C. | Workability is easy |
| D. | Strength is more |
| Answer» C. Workability is easy | |
| 9. |
For high-strength concrete, a cement should produce a minimum 7-days mortar-cube strength of approximately ___ MPa? |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» D. 40 | |
| 10. |
The choice of cement for high-strength concrete should not be based only on mortar-cube tests but it should also include tests of compressive strengths of concrete at ___________ days. |
| A. | 28, 56, 91 |
| B. | 28, 60, 90 |
| C. | 30, 60, 90 |
| D. | 30, 45, 60 |
| Answer» B. 28, 60, 90 | |
| 11. |
High-Performance Concrete is ____________ as compared to Normal Strength Concrete. |
| A. | Less brittle |
| B. | Brittle |
| C. | More brittle |
| D. | Highly ductile |
| Answer» D. Highly ductile | |
| 12. |
Concrete having 28-days compressive strength in the range of 100 to 150 MPa. |
| A. | HPC |
| B. | VHPC |
| C. | OPC |
| D. | HSC |
| Answer» C. OPC | |
| 13. |
Concrete having 28- days’ compressive strength in the range of 60 to 100 MPa.$ |
| A. | HPC |
| B. | VHPC |
| C. | OPC |
| D. | HSC |
| Answer» B. VHPC | |
| 14. |
“HPC is not used in high span bridges”. Is it true or false?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
“High Performance concrete works out to be economical”. Is it true or false?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
It is ___________ strength and ___________ permeability. |
| A. | High, high |
| B. | Low, low |
| C. | High, low |
| D. | Low, high |
| Answer» D. Low, high | |