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Building Materials - Section 1 Multiple Questions and Answers.
| 41. | Varnish is a transparent or semi-transparent solution of resinuous substances in | ||
| A. | alcohol | ||
| B. | linseed | ||
| C. | turpentine | ||
| D. | all the above. | ||
| 42. | Initial setting time of cement for asbestos cement products should be not less than | ||
| A. | 30 minutes | ||
| B. | 50 minutes | ||
| C. | 75 minutes | ||
| D. | 90 minutes. | ||
| 43. | The variety of pig iron used for the manufacture of steel by Bessemer process, is | ||
| A. | Bessemer pig | ||
| B. | Grey pig | ||
| C. | White forge pig | ||
| D. | Mottled pig. | ||
| 44. | For melting one tonne of cast iron | ||
| A. | 700 m3 air is required | ||
| B. | 20 kg limestone is required | ||
| C. | one quintal coke is required | ||
| D. | all the above. | ||
| 45. | For filling cracks in masonry structures, the type of bitumen used, is | ||
| A. | cut-back bitumen | ||
| B. | bitumen-emulsion | ||
| C. | blown bitumen | ||
| D. | plastic bitumen. | ||
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