MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
Super plasticizers reduce water requirement by ___________ %. |
| A. | 12-30 |
| B. | 10-15 |
| C. | 30-42 |
| D. | 48 |
| Answer» B. 10-15 | |
| 2. |
What is the main function of set retarders? |
| A. | Increase curing rate |
| B. | Slows curing rate |
| C. | Improves workability at low w/c ratio |
| D. | Speeds up start of finishing operations |
| Answer» C. Improves workability at low w/c ratio | |
| 3. |
Mid-range water reducers result in at least _________ %. |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» E. | |
| 4. |
Which of the following option doesn’t come in mineral admixtures? |
| A. | Set retarders |
| B. | Blast Furnace Slag |
| C. | Flyash |
| D. | Silica Fume |
| Answer» B. Blast Furnace Slag | |
| 5. |
Which of the following option doesn’t come in chemical admixtures? |
| A. | Plasticizers |
| B. | Pozzolanic |
| C. | Super plasticizer |
| D. | Accelerators |
| Answer» C. Super plasticizer | |
| 6. |
Which of the following statement is incorrect about the function of admixtures? |
| A. | To accelerate the initial set of concrete, to speed up the rate of development of strength at early ages |
| B. | To enhance the workability |
| C. | To reduce the segregation in grout and concrete mixers |
| D. | To retard the initial set, to keep concrete workable for a shorter time for placement |
| Answer» E. | |
| 7. |
WHAT_IS_THE_MAIN_FUNCTION_OF_SET_RETARDERS??$ |
| A. | Increase curing rate |
| B. | Slows curing rate |
| C. | Improves workability at low w/c ratio |
| D. | Speeds up start of finishing operations |
| Answer» C. Improves workability at low w/c ratio | |
| 8. |
Super_plasticizers_reduce_water_requirement_by_____________%.$ |
| A. | 12-30 |
| B. | 10-15 |
| C. | 30-42 |
| D. | 48 |
| Answer» B. 10-15 | |
| 9. |
Mid-range water reducers result in at least _________ %? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» E. | |
| 10. |
Admixtures which cause early setting, and hardening of concrete are called __________ |
| A. | Plasticizers |
| B. | Retarders |
| C. | Super plasticizer |
| D. | Accelerators |
| Answer» E. | |
| 11. |
Classification of admixtures are classified into ________ types. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 5 |
| Answer» C. 3 | |
| 12. |
Which of the following option doesn’t come in chemical admixtures?$ |
| A. | Plasticizers |
| B. | Pozzolanic |
| C. | Super plasticizer |
| D. | Accelerators |
| Answer» C. Super plasticizer | |
| 13. |
Which of the following statement is incorrect about the function of admixtures. |
| A. | To accelerate the initial set of concrete, to speed up the rate of development of strength at early ages |
| B. | To enhance the workability |
| C. | To reduce the segregation in grout and concrete mixers |
| D. | To retard the initial set, to keep concrete workable for a shorter time for placement |
| Answer» E. | |
| 14. |
What do you mean by admixtures? |
| A. | Ingredients which are added to in cement before or after concrete mix |
| B. | Ingredients which are added to make aggregates healthier |
| C. | Ingredients added in cement to make it shinier |
| D. | Ingredients added in concrete to make good workability |
| Answer» B. Ingredients which are added to make aggregates healthier | |