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JEE Advanced levelSingle correct optionDifficulty 3 of 3pl046

Select the pair in which BOTH polymers are cross-linked network polymers.

ABakelite and vulcanised natural rubber
BLDPE and bakelite
CHDPE and melamine-formaldehyde polymer
DNylon 6,6 and polyvinyl chloride

Answer: A

Bakelite, melamine-formaldehyde and vulcanised rubber are cross-linked. LDPE is branched, and HDPE, nylon 6,6 and PVC are essentially linear.

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