MCQOPTIONS
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MCQOPTIONS
This section includes 6 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. |
What is the percentage of air by volume in Air Entraining Cement? |
| A. | 3-4 |
| B. | 10-11 |
| C. | 7-8 |
| D. | 9 |
| Answer» B. 10-11 | |
| 2. |
What is the percentage of iron oxide in white cement? |
| A. | High |
| B. | Very high |
| C. | Medium |
| D. | Very low |
| Answer» E. | |
| 3. |
Approximate percentage range of A2O3 in OPC is _______ |
| A. | 17-25 |
| B. | 3-8 |
| C. | 3- 10 |
| D. | 4-15 |
| Answer» D. 4-15 | |
| 4. |
The minimum water to cement ratio for cement concrete to hydrate is _______ |
| A. | 0.65 |
| B. | 0.5 |
| C. | 0.38 |
| D. | 0.27 |
| Answer» D. 0.27 | |
| 5. |
For complete hydration of cement the w/c ratio needed is ________ |
| A. | More than 0.25 |
| B. | More than 0.25 but less than 0.35 |
| C. | More than 0.35 but less than 0.60 |
| D. | More than 0.60 |
| Answer» D. More than 0.60 | |
| 6. |
The slurry, in its movement down the kiln, encounters a progressively higher temperature. At first, the water is driven off and __________ is liberated. |
| A. | SiO<sub>2</sub> |
| B. | CO<sub>2</sub> |
| C. | Gypsum |
| D. | CaO |
| Answer» C. Gypsum | |