MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Construction Materials knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is minimum cement content for concrete permanently under sea water to avoid the corrosion of reinforcement? |
| A. | 5 kN/m<sup>3</sup> |
| B. | 5 N/m<sup>3</sup> |
| C. | 3 kN/m<sup>3</sup> |
| D. | 3 N/m<sup>3</sup> |
| Answer» D. 3 N/m<sup>3</sup> | |
| 2. |
It is found that the _______ water does not lead to corrosion of reinforcement, provided the concrete is dense and there is enough cover to the reinforcement. |
| A. | Sewage |
| B. | Fresh |
| C. | River |
| D. | Sea |
| Answer» E. | |
| 3. |
The ________ water tends to develop dampness and inflorescence of the concrete structures. |
| A. | Lake |
| B. | Mineral |
| C. | Sea |
| D. | River |
| Answer» D. River | |
| 4. |
The term ________ is define as an act or process of gradual wearing away of a metal due to chemical or electro chemical reaction by its surrounding such that the metal is converted into an oxide, salt or some other compound. |
| A. | Precipitation |
| B. | Dissolution |
| C. | Erosion |
| D. | Corrosion |
| Answer» E. | |