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Building Materials - Section 4 Multiple Questions and Answers.
| 6. | Quick lime | ||
| A. | generates heat when added to water | ||
| B. | reacts with carbon dioxide | ||
| C. | may be used for white-washing | ||
| D. | all the above. | ||
| 7. | Age of a tree may be ascertained by | ||
| A. | radius of its stem | ||
| B. | circumference of its stem | ||
| C. | number of branches | ||
| D. | number of annual rings. | ||
| 8. | The portion of a brick cut to form angles other than right angles in plan, is known as | ||
| A. | queen closer | ||
| B. | king closer | ||
| C. | closer | ||
| D. | squint brick. | ||
| 9. | Pick up the correct statement from the following: | ||
| A. | Slaked lime contains calcium hydroxide | ||
| B. | Quick lime contains calcium oxide | ||
| C. | Slaked lime may be obtained from quick lime | ||
| D. | All the above. | ||
| 10. | Plywood is obtained by gluing wooden sheets at | ||
| A. | 100 to 150 N/cm2 | ||
| B. | 100 to 130°C | ||
| C. | both (a) and (b) | ||
| D. | Neither (a) nor (b). | ||
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