Polymers Test

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Polymers Test - 32

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Weekly Quiz Competition

Question 1
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The two monomers used in the preparation of dextron are:

A
3-hydroxy butanoic acid and 3-hydroxy pentanoic acid.

B
$$\epsilon $$ amino caproic acid and glycine.

C
isobutylene and isoprene.

D
lactic acid and glycolic acid.

Solution

Dextron is a polyacetic acid polyglycolic acid polymer. The monomers used are lactic acid and glycolic acid. It is copolymer and has ester linkage. It is used as friction modifier. It is added to lubricants to reduce surface friction.
Question 2
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Heating of rubber with sulphur is called

A
Vulcanisation

B
Galvanisation

C
Sulphonation

D
Bessemerisation

Solution

Vulcanization is a chemical process for converting natural rubber or related polymers into more durable materials via the addition of sulfur or other equivalent curatives or accelerators. These additives modify the polymer by forming cross-links.
Question 3
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The structure of bakelite is :

A

B

C

D

Solution

The structure of bakelite is represented by option C. Bakelite is formaldehyde phenol polymer.
Question 4
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Dacron is polymer of:

A
glycol and formaldehyde

B
glycol and phenol

C
glycol and phthalic acid

D
glycol and terephthalic acid

Solution

Dacron, also known as Terylene; a polymer formed from polymerization of ethylene glycol and Terephthalic acid.
Option D is correct.
Question 5
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Synthetic polymer that resembles natural rubber is:

A
chloroprene

B
isoprene

C
neoprene

D
glyptal
Question 6
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Nylon-66 is an example of:

A
polypropylene

B
polyester

C
polyamide

D
polystyrene

Solution

Nylon $$-6,6$$ is an example of polyamide (contains amide linkage). It is a polymer formed by condensation polymerization of adipic acid and hexamethylenediamine.
Option C is correct.
Question 7
1 / -0

Identify the co-polymer from the following:

A
$$[-CH_2-CH=CH_2-CH_2-CH(C_6H_5)-CH_2-]_n$$

B
$$[-CF_2-CF_2-]_n$$

C
$$[-CH_2-C(Cl)=CH-CH_2-]_n$$

D
$$[-CH_2-CH(Cl)-]_n$$
Question 8
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Which one of the following is not a biopolymer?

A
Cellulose

B
$$Nylon-6$$

C
Insulin

D
DNA

Solution
Question 9
1 / -0

Dacron is obtained by the condensation polymerisation of :

A
dimethyl terephthalate and ethylene glycol

B
terephthalic acid and formaldehyde

C
phenol and phthalic acid

D
phenol and formaldehyde

Solution

Dacron is obtained by the condensation polymerisation of dimethyl terephthalate and ethylene glycol.

Dacron is polyester and is also called terylene.

Hence the correct option is A.
Question 10
1 / -0

Synthetic polymer among the following is :

A
protein

B
plastic

C
starch

D
cellulose

E
nucleic acid

Solution

Plastics are synthetic polymers.

Synthetic polymers are man-made, prepared in laboratories or industries from chemical substances.

Examples of synthetic polymers include nylon, terylene, polythene etc.

On the other hand, proteins, starch, cellulose and nucleic acid are natural polymers.

Natural polymers are either obtained from plants or animals and are named as plant polymers and animal polymers.

Hence option B is correct.