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Building Materials - Section 7 Multiple Questions and Answers.
| 46. | Durability of building stone is affected by its | ||
| A. | chemical composition | ||
| B. | texture | ||
| C. | resistance to atmosphere | ||
| D. | All of the above. | ||
| 47. | Magnese steels | ||
| A. | are non-magnetic | ||
| B. | possess high electrical resistance | ||
| C. | possess low coefficient of expansion | ||
| D. | All of the above. | ||
| 48. | Pick up the metal refractory from the following: | ||
| A. | Molyblendum | ||
| B. | Tungsten | ||
| C. | Zicronium | ||
| D. | All of these. | ||
| 49. | According to IS 399-1963, the weight of the timber is specified at | ||
| A. | 8% moisture content | ||
| B. | 10% moisture content | ||
| C. | 12% moisture content | ||
| D. | 14% moisture content. | ||
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