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Building Materials - Section 1 Multiple Questions and Answers.
| 11. | The initial setting time of lime-pozzolana, is | ||
| A. | 30 minutes | ||
| B. | 60 minutes | ||
| C. | 90 minutes | ||
| D. | 120 minutes. | ||
| 12. | The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout | ||
| A. | the monsoon | ||
| B. | the winter | ||
| C. | the summer | ||
| D. | none of these. | ||
| 13. | Quartzite is a | ||
| A. | metamorphic rock | ||
| B. | argillaceous rock | ||
| C. | calcareous rock | ||
| D. | silicious rock. | ||
| 14. | The variety of pig iron used for manufacture of wrought iron, is | ||
| A. | Bessemer pig | ||
| B. | Grey or foundry pig | ||
| C. | White forge pig | ||
| D. | Mottled pig. | ||
| 15. | Sand stone is | ||
| A. | sedimentary rock | ||
| B. | metamorphic rock | ||
| C. | igneous rock | ||
| D. | volcanic rock. | ||
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