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Polymers

NEET 2016 (Phase 2)MCQEasyNot asked in last 5 yrs+4−1
Ques. 1NEET 2016 (Phase 2)

Which one of the following structures represents nylon 6, 6 polymer?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

Answer

(4) [figure]

Solution

Nylon 6, 6 is a polyamide prepared by condensation polymerisation of hexamethylenediamine with adipic acid under high pressure and at high temperature:

nHOOC(CH2)4COOH + nH2N(CH2)6NH2

553 K, high pressure - [NH(CH2)6NH-CO(CH2)4CO ]n - + 2nH2O

The repeating unit contains six carbon atoms from the diamine and six carbon atoms from the dicarboxylic acid joined by amide (-CO-NH-) linkages.

In option (4), the unit -CO-(CH2-CH2)2-CO- = -CO(CH2)4CO- comes from adipic acid and -NH-(CH2)6-NH- comes from hexamethylenediamine, joined by amide linkages.

The structures in options (1), (2) and (3) are addition polymers of substituted alkenes with no amide linkage.

Answer: (4)

Out of syllabus

Keep practising — Polymers

Ques. 2AIPMT 2015

Caprolactam is used for the manufacture of

  1. teflon
  2. terylene
  3. nylon 6, 6
  4. nylon 6
Out of syllabus
Ques. 3AIPMT 2015 (Cancelled)

Biodegradable polymer which can be produced from glycine and aminocaproic acid is

  1. buna - N
  2. nylon 6, 6
  3. nylon 2-nylon 6
  4. PHBV
Out of syllabus
Ques. 4AIPMT 2014

Which of the following organic compounds polymerizes to form the polyester dacron?

  1. Propylene and para HO-(C6H4)-OH
  2. Benzoic acid and ethanol
  3. Terephthalic acid and ethylene glycol
  4. Benzoic acid and para HO-(C6H4)-OH
Out of syllabus
Ques. 5AIPMT 2014

Which one of the following is an example of thermosetting polymer?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Out of syllabus
Ques. 6NEET 2013

Nylon is an example of

  1. polyamide
  2. polythene
  3. polyester
  4. polysaccharide.
Out of syllabus
Ques. 7NEET 2013

Which is the monomer of neoprene in the following?

  1. CH2= Cl |C-CH=CH2
  2. CH2=CH-C CH
  3. CH2=CH-CH=CH2
  4. CH2= CH3 |C-CH=CH2
Out of syllabus
Ques. 8AIPMT 2012 (Mains)

Which one of the following sets forms the biodegradable polymer?

  1. CH2=CH-CN and CH2=CH-CH=CH2
  2. H2N-CH2-COOH and H2N-(CH2)5-COOH
  3. HO-CH2-CH2-OH and [figure]
  4. [figure] and CH2=CH-CH=CH2
Out of syllabus
Ques. 9AIPMT 2012 (Prelims)

Which one of the following is not a condensation polymer?

  1. Melamine
  2. Glyptal
  3. Dacron
  4. Neoprene
Out of syllabus
Ques. 10AIPMT 2012 (Prelims)

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 syllabus
Ques. 11AIPMT 2011 (Prelims)

Of the following which one is classified as polyester polymer?

  1. Terylene
  2. Bakelite
  3. Melamine
  4. Nylon-6,6
Out of syllabus

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