MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
IS_IT_POSSIBLE_TO_USE_W/C_RATIO_AS_LOW_AS_5??$ |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 2. |
What_is_the_limitation_of_Carboxylic_acids_in_High_range_water_reducers?$ |
| A. | 0 |
| B. | .1% |
| C. | .2% |
| D. | .3% |
| Answer» C. .2% | |
| 3. |
What is the allowed reduction of water with super plasticizers without reducing workability? |
| A. | 10% |
| B. | 20% |
| C. | 30% |
| D. | 40% |
| Answer» D. 40% | |
| 4. |
What is super plasticizers? |
| A. | Which adds water for workability |
| B. | Which reduces high range of water for workability |
| C. | Which decreases workability at the same water content |
| D. | Which oxidizes water for workability |
| Answer» C. Which decreases workability at the same water content | |
| 5. |
Where do we use plasticizers? |
| A. | Where low degree of workability is required |
| B. | Where medium degree of workability is required |
| C. | Where high degree of workability is required |
| D. | Where very low degree of workability is required |
| Answer» D. Where very low degree of workability is required | |
| 6. |
At constant workability, what is the reduction in mixing water? |
| A. | 1-2% |
| B. | 50% |
| C. | .1-.4% |
| D. | 5-15% |
| Answer» E. | |
| 7. |
What is the limitation of plasticizers? |
| A. | A good plasticizer is one which does not cause air-entrainment in concrete > .1-.2%. |
| B. | A good plasticizer is one which does not cause air-entrainment in concrete > 5%. |
| C. | A good plasticizer is one which does not cause air-entrainment in concrete > 10-20%. |
| D. | A good plasticizer is one which does not cause air-entrainment in concrete > 1-2%. |
| Answer» E. | |
| 8. |
What is the amount used of plasticizers in cement by weight? |
| A. | 0 |
| B. | .1-.4% |
| C. | 1% |
| D. | 1-2% |
| Answer» C. 1% | |
| 9. |
Which one is an anionic surfactants? |
| A. | Polyglycol esters |
| B. | Hydroxylated carboxylic acids |
| C. | Lignosulphonates |
| D. | Carbohydrates |
| Answer» D. Carbohydrates | |
| 10. |
What is plasticizers? |
| A. | Which adds water for workability |
| B. | Which reduces water for workability |
| C. | Which decreases workability at the same water content |
| D. | Which oxidizes water for workability |
| Answer» C. Which decreases workability at the same water content | |