Polymers

Which amongst the following molecules on polymerization produces neoprene?

1. H2C= Cl |C-CH=CH2
2. H2C=CH-C CH
3. H2C= CH3 |C-CH=CH2
4. H2C=CH-CH=CH2

Which statement regarding polymers is not correct?

1. Elastomers have polymer chains held together by weak intermolecular forces
2. Fibers possess high tensile strength
3. Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively
4. Thermosetting polymers are reusable

Which among the following is a thermoplastic polymer?

1. Melamine polymer
2. Bakelite
3. Polythene
4. Urea-formaldehyde resin

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

1. Dacron
2. Teflon
3. Nylon-66
4. Novolac

Which of the following is a natural polymer?

1. poly (Butadiene-styrene)
2. polybutadiene
3. poly (Butadiene-acrylonitrile)
4. cis-1,4-polyisoprene

The biodegradable polymer is :

1. nylon-6
2. Buna-S
3. nylon-6, 6
4. nylon-2-nylon 6

Regarding cross-linked or network polymers, which of the following statements is incorrect?

1. They contain covalent bonds between various linear polymer chains.
2. They are formed from bi- and tri-functional monomers.
3. Examples are bakelite and melamine.
4. They contain strong covalent bonds in their polymer chains.

Natural rubber has

1. alternate cis- and trans-configuration
2. random cis- and trans-configuration
3. all cis-configuration
4. all trans-configuration.

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

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

Caprolactam is used for the manufacture of

1. teflon
2. terylene
3. nylon 6, 6
4. nylon 6

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

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

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

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

Nylon is an example of

1. polyamide
2. polythene
3. polyester
4. polysaccharide.

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

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

Which one of the following is not a condensation polymer?

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

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.

Of the following which one is classified as polyester polymer?

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

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

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]

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.

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

1. Teflon
2. Natural rubber
3. Polystyrene
4. Nylon-6,6

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

1. homopolymer
2. copolymer
3. addition polymer
4. thermosetting polymer.

The monomer of the polymer [figure]

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

Which one of the following is a chain growth polymer?

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

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]

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

1. CH2=CHCl
2. CCl2=CCl2
3. [figure]
4. CF2=CF2

Monomer of [figure] is

1. 2-methylpropene
2. styrene
3. propylene
4. ethene

Which of the following is not correctly matched?

1. Neoprene : [figure]
2. Nylon-6,6 : [figure]
3. Terylene : [figure]
4. PMMA : [figure]