

MCQOPTIONS
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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 | |