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Polymers · Question 25

AIPMT 2005MCQMedium📈 Topic in 0% papers+4−1
1

The monomer of the polymer [figure]

  1. [figure]
  2. CH3CH=CHCH3
  3. CH3CH=CH2
  4. (CH3)2C=C(CH3)2

Answer

(1) [figure]

Solution

The chain is made of repeating units -CH2-C(CH3)2- and ends in a carbocation -CH2- C(CH3)2, i.e. it is a growing chain of cationic addition polymerisation.

⇒ Each repeating unit -CH2-C(CH3)2- comes from the alkene CH2=C(CH3)2 (2-methylpropene, isobutylene).

nCH2=C(CH3)2 H - [CH2-C(CH3)2 ]n - (polyisobutylene)

∴ The monomer is H2C=C(CH3)2.

Answer: (1)

Out of syllabusAIPMT 2005

Keep practising — Polymers

2

Which one of the following is a chain growth polymer?

  1. Starch
  2. Nucleic acid
  3. Polystyrene
  4. Protein
Out of syllabusAIPMT 2004
3

Acrilan is a hard, horny and a high melting material. Which one of the following represents its structure?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Out of syllabusAIPMT 2003
4

Which one of the following monomers gives the polymer neoprene on polymerization?

  1. CH2=CHCl
  2. CCl2=CCl2
  3. [figure]
  4. CF2=CF2
Out of syllabusAIPMT 2003
5

Monomer of [figure] is

  1. 2-methylpropene
  2. styrene
  3. propylene
  4. ethene
Out of syllabusAIPMT 2002
6

Which of the following is not correctly matched?

  1. Neoprene : [figure]
  2. Nylon-6,6 : [figure]
  3. Terylene : [figure]
  4. PMMA : [figure]
Out of syllabusAIPMT 2001
7

CF2=CF2 is the monomer of

  1. teflon
  2. orlon
  3. polythene
  4. nylon-6
Out of syllabusAIPMT 2000

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