NEET UG CHEMISTRY MCQ: POLYMERS

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Which one of the following statement is wrong?

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Correct option: B

Dibenzol peroxide is a catalyst in the polymerization of PVC.

Option B (Dibenzol peroxide is a catalyst in the polymerization of PVC) is wrong because dibenzoyl peroxide is a catalyst for the polymerization of many alkenes, but not specifically for PVC. PVC uses other catalysts for its polymerization.

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Arrange the following monomers in order of decreasing ability to undergo cationic polymerisation

\mathrm{I}\mathrm{.}\,\,\,\,\,\mathrm{N}{\mathrm{O}_2}{\mathrm{C}_6}{\mathrm{H}_5} - \mathrm{CH} = \mathrm{C}{\mathrm{H}_2}

\mathrm{II}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_3}

\mathrm{III}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{OC}{\mathrm{H}_3}

Thiokol is a Assertion: Vulcanisation of rubber increases its tensile strength.

Reason: Sulphur cross links are formed between poly-isoprene chains during vulcanisation. Select the correct statement. Which of the following type of forces are present in vulcanized rubber? Which of the following is not an example of addition polymer?