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Building Materials - Section 6 Multiple Questions and Answers.
| 46. | For light and ornamental casting, the most unsuitable pig iron, is | ||
| A. | Bessemer pig | ||
| B. | Grey or foundry pig | ||
| C. | White or forge pig | ||
| D. | Mottled pig. | ||
| 47. | Seasoning of timber is essential to remove | ||
| A. | knots from timber | ||
| B. | sap from timber | ||
| C. | twisted fibre from timber | ||
| D. | roughness of timber. | ||
| 48. | The melting point of silica is : | ||
| A. | 1570�C | ||
| B. | 1630�C | ||
| C. | 1730�C | ||
| D. | 1850�C. | ||
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