MCQOPTIONS
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| 1. |
___________MATERIAL_IS_MADE_OF_BLACK_POLYTHENE_HAVING_THICKNESS_OF_ABOUT._50_MM_TO_1_MM.?$ |
| A. | Brick |
| B. | Stone |
| C. | Plastic sheet |
| D. | Cement concrete |
| Answer» D. Cement concrete | |