S1: Metals are today being replaced by polymers in many applications. P: Above all, they are cheaper and easier to process making them a viable alternative to metals. Q: Polymers are essentially a long chains of hydrocarbon molecules. R: Today polymers as strong as metals have been developed. S: These have replaced the traditional chromium-plated metallic bumpers in cars. S6: Many Indian Institutes of science and Technology run special programmes on polymer science. The Proper sequence should be:

1. A Option A: QRSP
2. B Option B: RSQP
3. C Option C: RQSP
4. D Option D: QRPS

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