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JEE Advanced levelSingle correct optionDifficulty 3 of 3pl016

Assertion (A): Bakelite is a thermosetting polymer. Reason (R): Bakelite consists of linear chains held together only by weak van der Waals forces, which allow it to be softened repeatedly on heating. Choose the correct option.

  1. AA is true, R is false
  2. BBoth A and R are true and R is the correct explanation of A
  3. CBoth A and R are true but R is not the correct explanation of A
  4. DA is false, R is true

Answer: A

Bakelite is a three-dimensional cross-linked network, so once set it cannot be softened again: A is true. R describes a thermoplastic and is false for bakelite.
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