MCQOPTIONS
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| 1. |
1 : Charles Goodyear once accidentallyP : and found that the resulting rubberQ : dropped a mixture of natural rubberR : was harder, stronger, more elasticS : and sulphur over a hot stove6 : and non-stickyThe Proper sequence should be: |
| A. | SQR |
| B. | SPR |
| C. | SQP |
| D. | QPR |
| Answer» C. SQP | |