Random cis - and trans - configuration

Alternate cis - and trans -configuration

Molten polymer can be moulded in desired shape

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JEE • CHEMISTRY • POLYMERS

Polymers practice · Easy

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These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

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Showing 1-30 of 66 questions

1 Easy

1 of 66

Remembering +4 | -1

Low density polythene is prepared by

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Correct option: A

Free radical polymerization

Option A (Free radical polymerization) is correct because low-density polythene (LDPE) is typically produced via free radical polymerization of ethene at high pressures and temperatures.

2 Easy

2 of 66

Remembering +4 | -1

Which of the following is not a fibre?

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Correct option: D

Polychloroprene

Option D (Polychloroprene) is correct because Polychloroprene is a synthetic rubber (Neoprene), not a fiber, while Terylene, Nylons, and Polyacrylonitrile are synthetic fibers.

3 Easy

3 of 66

Remembering +4 | -1

Nylon-6 is

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Correct option: D

Perlon

Option D is correct because Nylon-6 is also known as Perlon, a polyamide formed by the ring-opening polymerization of caprolactam.

4 Easy

4 of 66

Remembering +4 | -1

Melamine plastic crockery is a codensation polymer of

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Correct option: A

\mathrm{HCHO}

and melamine

Option A (

\mathrm{HCHO}

and melamine) is correct because melamine plastic crockery is formed through the condensation polymerization of formaldehyde (

\mathrm{HCHO}

) and melamine.

5 Easy

5 of 66

Remembering +4 | -1

By the addition of 3% to 10% sulphur in rubber

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Correct option: B

Hard rubber is obtained

Option B (Hard rubber is obtained) is correct because the addition of sulphur to rubber causes cross-linking, making it harder.

6 Easy

6 of 66

Remembering +4 | -1

Natural rubber has:

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Correct option: B

All cis - configuration

Option B (All cis - configuration) is correct because natural rubber is a polymer of isoprene with all isoprene units in the cis configuration.

7 Easy

7 of 66

Remembering +4 | -1

Which of the following is not a natural polymer?

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Correct option: D

Polybutadiene

Option D (Polybutadiene) is correct because polybutadiene is a synthetic polymer made from the polymerization of butadiene, while the others are naturally occurring.

8 Easy

8 of 66

Remembering +4 | -1

Which of the following is biodegradable polymer?

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Correct option: C

PHBV

Option C (PHBV) is correct because PHBV (Polyhydroxybutyrate-co-hydroxyvalerate) is a biodegradable polymer.

9 Easy

9 of 66

Understanding +4 | -1

A homopolymer is obtained by polymerization of:

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Correct option: A

One type of monomer units

The correct answer is A (One type of monomer units) because a homopolymer is defined as a polymer made from only one type of monomer.

10 Easy

10 of 66

Remembering +4 | -1

Which of the following is used in vulcanization of rubber?

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Correct option: A

\mathrm{S}{\mathrm{F}_6}

Option A (

\mathrm{S}{\mathrm{F}_6}

) is correct because sulfur is used in the vulcanization of rubber, and

SF_6

contains sulfur.

11 Easy

11 of 66

Remembering +4 | -1

The biodegradable polymer is:

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Correct option: B

Nylon – 2 – Nylon 6

Option B (Nylon – 2 – Nylon 6) is correct because it is a biodegradable polyamide.

12 Easy

12 of 66

Remembering +4 | -1

Wash and wear clothes are manufactured using

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Correct option: C

Terylene fibres

Option C (Terylene fibres) is correct because terylene fibers are crease-resistant, durable, and have low moisture content, making them suitable for wash and wear clothes.

13 Easy

13 of 66

Remembering +4 | -1

Copolymer is:

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Correct option: B

Nylon-6,6

Option B (Nylon-6,6) is correct because Nylon-6,6 is formed by the copolymerization of two different monomers, adipic acid and hexamethylenediamine.

14 Easy

14 of 66

Remembering +4 | -1

One of the constituents in the preparation of Thiokol is

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Correct option: A

1,2- dichloroethane

Option A (1,2- dichloroethane) is correct because Thiokol is a polymer made from 1,2-dichloroethane and sodium polysulfide.

15 Easy

15 of 66

Remembering +4 | -1

Which of the following is a biodegradable polymer?

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Correct option: A

Cellulose

Option A (Cellulose) is correct because cellulose is a natural polymer that can be broken down by microorganisms, making it biodegradable.

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16 Easy

16 of 66

Remembering +4 | -1

A copolymer of vinyl chloride and vinyl acetate is called:

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Correct option: A

Vinylon

Option A (Vinylon) is correct because Vinylon is a copolymer made from vinyl chloride and vinyl acetate monomers.

17 Easy

17 of 66

Understanding +4 | -1

Nylon-6,6 is not a :

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Correct option: D

Homopolymer

Option D (Homopolymer) is correct because Nylon-6,6 is a copolymer formed from two different monomers, not a single repeating unit.

18 Easy

18 of 66

Understanding +4 | -1

The polymer X-consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer

\mathrm{X}

View answer and explanation

Correct option: A

High density polythene

Option A (High density polythene) is correct because Ziegler-Natta catalysts (triethylaluminium and titanium tetrachloride) are used to produce high-density polyethylene.

19 Easy

19 of 66

Remembering +4 | -1

The monomer units of silicons a water repellant, acid resistant and heat resistant polymer is:

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Correct option: C

{R_2}\mathrm{SiO}

Option C (

{R_2}\mathrm{SiO}

) is correct because the monomer unit of silicones is dialkylsiloxane, represented as R2SiO.

20 Easy

20 of 66

Remembering +4 | -1

Which of the given polymers is a natural polymer

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Correct option: C

Starch

Option C (Starch) is correct because starch is a naturally occurring polysaccharide produced by plants.

21 Easy

21 of 66

Remembering +4 | -1

Acetate rayon is prepared from:

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Correct option: D

Cellulose

Option D (Cellulose) is correct because acetate rayon is a cellulose acetate, which is derived from cellulose.

22 Easy

22 of 66

Remembering +4 | -1

Thiokol is a

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Correct option: C

Rubber

Option C (Rubber) is correct because Thiokol is a synthetic rubber, specifically a polysulfide rubber.

23 Easy

23 of 66

Remembering +4 | -1

Ebonite is

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Correct option: D

Highly vulcanized rubber

Option D (Highly vulcanized rubber) is correct because ebonite is indeed a hard and highly vulcanized form of rubber with a high sulfur content.

24 Easy

24 of 66

Remembering +4 | -1

Terylene is a:

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Correct option: B

Polyester

Option B (Polyester) is correct because Terylene is formed by the polymerization of ethylene glycol and terephthalic acid, making it a polyester.

25 Easy

25 of 66

Remembering +4 | -1

Thermoplastics are:

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Correct option: D

All of the above

Option D (All of the above) is correct because thermoplastics are linear polymers that soften or melt on heating and can be molded into desired shapes.

26 Easy

26 of 66

Remembering +4 | -1

Which of the following has been used in the manufacture of non-inflammable photographic films?

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Correct option: A

Cellulose nitrate

Option D (Cellulose acetate) is correct because it is a non-flammable material used in the manufacture of photographic films.

27 Easy

27 of 66

Understanding +4 | -1

Polyethene, PVC, Teflon and neoprene are all

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Correct option: B

Addition homopolymers

Option B (Addition homopolymers) is correct because polyethene, PVC, Teflon, and neoprene are all formed by the addition polymerization of a single type of monomer.

28 Easy

28 of 66

Understanding +4 | -1

Nylons, polyesters and cotton, all possess strength due to:

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Correct option: A

Intermolecule H-bonding

Option A (Intermolecule H-bonding) is correct because nylons, polyesters, and cotton all exhibit intermolecular hydrogen bonding, which contributes to their strength.

29 Easy

29 of 66

Remembering +4 | -1

Nylon is a

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Correct option: C

Polyamide

Option C (Polyamide) is correct because nylon is formed through amide linkages, making it a polyamide.

30 Easy

30 of 66

Remembering +4 | -1

Which of the following is a biodegradable polymer?

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Correct option: B

Nylon – 2 – Nylon – 6

Option B (Nylon – 2 – Nylon – 6) is correct because it is a copolymer of glycine and aminocaproic acid, making it biodegradable.

Revision notes and key takeaways

Review POLYMERS in your textbook or class notes, then use this set to check your understanding.

Key Takeaways

✓ This set contains 66 single-correct-answer MCQs on POLYMERS.
✓ Try each question before opening its answer. Read the explanation where one is available.
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