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. |
C3 S and C2S require approximately the _____________ amount of water for hydration. |
| A. | Same |
| B. | More |
| C. | Less |
| D. | Depends on the paste |
| Answer» B. More | |
| 2. |
On cooling below 1250oC, C3S decomposes ____________ |
| A. | Fast |
| B. | Slowly |
| C. | Never |
| D. | Depends on the conditions |
| Answer» C. Never | |
| 3. |
C4AF is not a true compound. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
C3 S and C2S require approximately the _____________ amount of water for hydration. |
| A. | Same |
| B. | More |
| C. | Less |
| D. | Depends on the paste |
| Answer» B. More | |
| 5. |
Gypsum reacts with ____________ to form calcium sulfo aluminates and calcium sulfo ferrite. |
| A. | C<sub>4</sub>AF |
| B. | CF<sub>4</sub> |
| C. | SO<sub>3</sub> |
| D. | CaO |
| Answer» B. CF<sub>4</sub> | |
| 6. |
On cooling below 1250oC, C3S decomposes ____________ |
| A. | Fast |
| B. | Slowly |
| C. | Never |
| D. | Depends on the conditions |
| Answer» C. Never | |
| 7. |
“C4AF is not a true compound.” Is this statement true or false?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Loss on Ignition (L.O.I.) is the loss in weight of cement after being heated to _____________ |
| A. | 1000°C |
| B. | 100°C |
| C. | 500°C |
| D. | 1500°C |
| Answer» B. 100¬¨¬®‚Äö√†√ªC | |
| 9. |
Insoluble Residue mainly comes from which compound? |
| A. | Lime |
| B. | Soda |
| C. | Silica |
| D. | Alumina |
| Answer» D. Alumina | |
| 10. |
”Portland cement is composed of four major oxides (CaO, SiO2, Al2O3, Fe2O3 ≥90%)”. Is this statement true or false. |
| A. | True |
| B. | False |
| Answer» B. False | |