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Building Materials - Section 7 Multiple Questions and Answers.
| 21. | Index number expressing the relative sizes of both coarse and fine aggregates, is called | ||
| A. | proportioning of aggregates | ||
| B. | fineness modulus | ||
| C. | grading of aggregates | ||
| D. | none of these. | ||
| 22. | Dolomite is a lime stone which contains carbonate of magnesia upto | ||
| A. | 15% | ||
| B. | 20% | ||
| C. | 25% | ||
| D. | 45%. | ||
| 24. | The portion of the brick cut across its width and having its length equal to that of a full brick, is known as | ||
| A. | closer | ||
| B. | queen closer | ||
| C. | king closer | ||
| D. | prince closer | ||
| 25. | Seasoning of timber is done for | ||
| A. | increasing moisture content | ||
| B. | decreasing moisture content | ||
| C. | increasing strength of timber | ||
| D. | none to these. | ||
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