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Polymers

AIPMT 2004MCQEasyNot asked in last 5 yrs+4−1
Ques. 1AIPMT 2004

Which one of the following is a chain growth polymer?

  1. Starch
  2. Nucleic acid
  3. Polystyrene
  4. Protein

Answer

(3) Polystyrene

Solution

As per NCERT, addition polymers are formed by the repeated addition of monomer molecules possessing double or triple bonds; since the chain grows through free-radical (or ionic) intermediates, this is chain growth polymerisation.

n C6H5CH=CH2 (-CH2-CH(C6H5)-)n (polystyrene)

∵ Starch, nucleic acids and proteins are condensation (step growth) biopolymers formed with loss of water.

∴ Polystyrene is a chain growth polymer.

Answer: (3)

Out of syllabus

Keep practising — Polymers

Ques. 2AIPMT 2003

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 syllabus
Ques. 3AIPMT 2003

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 syllabus
Ques. 4AIPMT 2002

Monomer of [figure] is

  1. 2-methylpropene
  2. styrene
  3. propylene
  4. ethene
Out of syllabus
Ques. 5AIPMT 2001

Which of the following is not correctly matched?

  1. Neoprene : [figure]
  2. Nylon-6,6 : [figure]
  3. Terylene : [figure]
  4. PMMA : [figure]
Out of syllabus
Ques. 6AIPMT 2000

CF2=CF2 is the monomer of

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

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