Polymers

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]