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Polymers · Question 17

AIPMT 2012 (Prelims)MCQEasy📈 Topic in 0% papers+4−1
1

Which one of the following is not a condensation polymer?

  1. Melamine
  2. Glyptal
  3. Dacron
  4. Neoprene

Answer

(4) Neoprene

Solution

Melamine (melamine–formaldehyde polymer), glyptal (ethylene glycol + phthalic acid) and Dacron (terylene: ethylene glycol + terephthalic acid) are formed by condensation with loss of water.

As per NCERT, neoprene is formed by free radical (addition) polymerisation of chloroprene:

n CH2=C(Cl)-CH=CH2 - [CH2-C(Cl)=CH-CH2 ]n -

Neoprene is an addition polymer, not a condensation polymer.

Answer: (4)

Out of syllabusAIPMT 2012 (Prelims)

Keep practising — Polymers

2

Which of the following statements is false?

  1. Artificial silk is derived from cellulose.
  2. Nylon-6, 6 is an example of elastomer.
  3. The repeat unit in natural rubber is isoprene.
  4. Both starch and cellulose are polymers of glucose.
Out of syllabusAIPMT 2012 (Prelims)
3

Of the following which one is classified as polyester polymer?

  1. Terylene
  2. Bakelite
  3. Melamine
  4. Nylon-6,6
Out of syllabusAIPMT 2011 (Prelims)
4

Which of the following structures represents neoprene polymer?

  1. [-CH2- Cl |C=CH-CH2- ]n
  2. [-CH2- Cl |CH- ]n
  3. [-CH2- CN |CH- ]n
  4. [- C6H5 |CH-CH2- ]n
Out of syllabusAIPMT 2010 (Prelims)
5

Structures of some common polymers are given. Which one is not correctly presented?

  1. Neoprene : [figure]
  2. Terylene : [figure]
  3. Nylon 6,6 : [figure]
  4. Teflon : [figure]
Out of syllabusAIPMT 2009
6

Which one of the following statements is not true?

  1. Buna-S is a copolymer of butadiene and styrene.
  2. Natural rubber is a 1,4-polymer of isoprene.
  3. In vulcanization, the formation of sulphur bridges between different chains makes rubber harder and stronger.
  4. Natural rubber has the trans-configuration at every double bond.
Out of syllabusAIPMT 2008
7

Which one of the following polymers is prepared by condensation polymerisation?

  1. Teflon
  2. Natural rubber
  3. Polystyrene
  4. Nylon-6,6
Out of syllabusAIPMT 2007
8

[ NH(CH2)6NHCO(CH2)4CO ]n is a

  1. homopolymer
  2. copolymer
  3. addition polymer
  4. thermosetting polymer.
Out of syllabusAIPMT 2006
9

The monomer of the polymer [figure]

  1. [figure]
  2. CH3CH=CHCH3
  3. CH3CH=CH2
  4. (CH3)2C=C(CH3)2
Out of syllabusAIPMT 2005
10

Which one of the following is a chain growth polymer?

  1. Starch
  2. Nucleic acid
  3. Polystyrene
  4. Protein
Out of syllabusAIPMT 2004
11

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

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