MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which compound imparts grey color, strength and hardness to the portland cement? |
| A. | Iron oxide |
| B. | Alumina |
| C. | Magnesium oxide |
| D. | Silica |
| Answer» B. Alumina | |
| 2. |
Which compound causes the cement efflorescent, if present in excess? |
| A. | Iron oxide |
| B. | Alkali oxide |
| C. | Sulphur trioxide |
| D. | Lime |
| Answer» C. Sulphur trioxide | |
| 3. |
The percentage composition of alumina in Portland cement is ___________ |
| A. | 60-69 |
| B. | 17-25 |
| C. | 3-8 |
| D. | 2-4 |
| Answer» D. 2-4 | |
| 4. |
All portland cements are hydraulic cement because they ___________ |
| A. | Set and harden in the absence of water |
| B. | Set and harden in the presence of water |
| C. | Do not harden after mixing water |
| D. | None of the mentioned option |
| Answer» C. Do not harden after mixing water | |
| 5. |
Who is recognized as the Father of the modern Portland cement industry ? |
| A. | Emil Abderhalden |
| B. | Richard Abegg |
| C. | Peter Agre |
| D. | William Aspdin |
| Answer» E. | |
| 6. |
Portland cement is made by calcining at temperature equals to ___________ |
| A. | 3000<sup>0</sup>C |
| B. | 1500<sup>0</sup>C |
| C. | 1800<sup>0</sup>C |
| D. | 2000<sup>0</sup>C |
| Answer» C. 1800<sup>0</sup>C | |
| 7. |
Blast furnace slag is the mixture of ___________ |
| A. | Slaked lime and calcium silicate |
| B. | Aluminium silicate and hydrated lime |
| C. | Calcium silicate and aluminium silicate |
| D. | Silica, alumina and calcium oxide |
| Answer» D. Silica, alumina and calcium oxide | |
| 8. |
Which type of cement possesses hydraulic qualities? |
| A. | Natural |
| B. | Puzzolona |
| C. | Slag |
| D. | Portland |
| Answer» B. Puzzolona | |