MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the average curing mixture for the vulcanization of Polychloroprene rubber (CR)? |
| A. | 5 parts ZnO and 4 parts MgO per 100 parts of neoprene |
| B. | 4 parts ZnO and 5 parts MgO per 100 parts of neoprene |
| C. | 8 parts sulphur per 100 parts of neoprene |
| D. | 10 parts sulphur per 100 parts of sulphur |
| Answer» B. 4 parts ZnO and 5 parts MgO per 100 parts of neoprene | |