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JEE • CHEMISTRY • POLYMERS

Polymers practice · Medium

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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 33 questions

1 Medium

1 of 33

Remembering +4 | -1

Terylene is a condensation polymer of ethylene glycol and

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Correct option: D

terephthalic acid

Option D (terephthalic acid) is correct because terylene (Dacron) is a condensation polymer formed from ethylene glycol and terephthalic acid.

2 Medium

2 of 33

Understanding +4 | -1

In which of the following polymers, empirical formula resembles with monomer?

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Correct option: B

Teflon

Option B (Teflon) is correct because Teflon is a homopolymer formed by addition polymerization, where the empirical formula of the polymer is the same as the monomer.

3 Medium

3 of 33

Remembering +4 | -1

Whether small molecules liberate in addition
polymerisation?

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Correct option: B

Option B (No) is correct because addition polymerization involves the direct joining of monomers without the elimination of any small molecules.

4 Medium

4 of 33

Remembering +4 | -1

Which of the following polymers of glucose is stored by animals?

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Correct option: D

Glycogen

Option D (Glycogen) is correct because glycogen is the storage form of glucose in animals, found in the liver, brain, and muscles.

5 Medium

5 of 33

Remembering +4 | -1

Which of the following is a polymer containing nitrogen?

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Correct option: A

Polyvinyl chloride

Option C (Nylon) is correct because Nylon is a polyamide, containing nitrogen atoms in its repeating units.

6 Medium

6 of 33

Understanding +4 | -1

Polymer formation from monomers starts by

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Correct option: A

Condesation reaction between monomers

Option A (Condensation reaction between monomers) is correct because polymerization often involves the elimination of a small molecule like water, which is a condensation reaction.

7 Medium

7 of 33

Remembering +4 | -1

The monomer of neoprene is

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Correct option: D

{\text{C}}{{\text{H}}_{\text{2}}}{\text{ = }}\mathop {\text{C}}\limits_{\begin{array}{cccccccccccccccccccc} {\text{|}} \\ {{\text{Cl}}} \end{array}} {\text{ - CH = C}}{{\text{H}}_{\text{2}}}

Option D (

{\text{C}}{{\text{H}}_{\text{2}}}{\text{ = }}\mathop {\text{C}}\limits_{\begin{array}{cccccccccccccccccccc} {\text{|}} \\ {{\text{Cl}}} \end{array}} {\text{ - CH = C}}{{\text{H}}_{\text{2}}}

) is correct because chloroprene is the monomer of neoprene.

8 Medium

8 of 33

Remembering +4 | -1

Polymer which has amide linkage is

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Correct option: A

Nylon-6,6

Option A (Nylon-6,6) is correct because Nylon-6,6 is a polymer that contains amide linkages.

9 Medium

9 of 33

Remembering +4 | -1

Biodegradable polymer among the following is

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Correct option: B

Nylon – 2, Nylon – 6

Option B is correct because Nylon-2-Nylon-6 is a biodegradable copolymer made from glycine and amino caproic acid, which can be broken down by microorganisms.

10 Medium

10 of 33

Understanding +4 | -1

The compound required for the formation of a thermosetting polymer with methanol is

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Correct option: D

Phenol

Option D (Phenol) is correct because phenol reacts with formaldehyde (derived from methanol) to form thermosetting polymers like Bakelite.

11 Medium

11 of 33

Analyzing +4 | -1

Assertion :- When a rubber band is stretched entropy increases.

Reason :- During expansion entropy increases.

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Correct option: D

If both Assertion & Reason are False

Option D (If both Assertion & Reason are False) is correct because stretching a rubber band decreases entropy, and expansion doesn't always increase entropy (e.g., adiabatic expansion).

12 Medium

12 of 33

Remembering +4 | -1

{M_w}

is the weight average molecular weight and

{\bar M_n}

is the number of average molecular weight of a polymer, the poly dispersity index (PDI) of the polymer is given by

View answer and explanation

Correct option: B

\frac{{{{\bar M}_w}}}{{{M_n}}}

Option B (

\frac{{{{\bar M}_w}}}{{{M_n}}}

) is correct because the polydispersity index (PDI) is defined as the ratio of weight average molecular weight to number average molecular weight.

13 Medium

13 of 33

Analyzing +4 | -1

Arrange the following monomers in order of decreasing ability to undergo cationic polymerisation

\mathrm{I}\mathrm{.}\,\,\,\,\,\mathrm{N}{\mathrm{O}_2}{\mathrm{C}_6}{\mathrm{H}_5} - \mathrm{CH} = \mathrm{C}{\mathrm{H}_2}

\mathrm{II}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_3}

\mathrm{III}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{OC}{\mathrm{H}_3}

View answer and explanation

Correct option: B

III > II > I

Option B is correct because electron-releasing groups activate the monomer towards cationic polymerization.

14 Medium

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Remembering +4 | -1

PDI for natural polymers is generally close to:

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Correct option: C

Option C (1) is correct because the PDI for natural polymers is generally close to 1.

15 Medium

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Remembering +4 | -1

The polymer, which can be stretched and retains its original status on releasing the force is

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Correct option: C

Buna-N

Option C (Buna-N) is correct because Buna-N is a synthetic rubber known for its elasticity and ability to return to its original shape after stretching.

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16 Medium

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Understanding +4 | -1

Assertion (A) Neoprene can be further hardened by heating with the sulphur.

Reason (R) It contains allylic double bond which help in introducing sulphur bridges between different polymer chains.

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Correct option: A

If both Assertion and Reason are true and Reason is correct explanation of Assertion.

Option A (If both Assertion and Reason are true and Reason is correct explanation of Assertion) is correct because neoprene hardening with sulfur involves sulfur bridges formed due to allylic double bonds.

17 Medium

17 of 33

Remembering +4 | -1

Buna-S is

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Correct option: C

Synthetic polymer

Option C (Synthetic polymer) is correct because Buna-S is a man-made polymer produced through the polymerization of butadiene and styrene.

18 Medium

18 of 33

Remembering +4 | -1

The baby feeding bottles are made up of

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Correct option: C

polystyrene

Option C (polystyrene) is correct because polystyrene is commonly used in the manufacturing of baby feeding bottles due to its properties.

19 Medium

19 of 33

Remembering +4 | -1

The polymer used in the manufacture of lacquers is

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Correct option: B

Glyptal

Option B (Glyptal) is correct because glyptal polymers, which are polyesters of phthalic acid and glycerol, are commonly used in the manufacture of lacquers and paints due to their film-forming properties.

20 Medium

20 of 33

Analyzing +4 | -1

Assertion: Branched polymers have higher tensile strength than linear polymers.

Reason: The intermolecular force of attraction in linear polymer is more than that in branched polymers.

View answer and explanation

Correct option: D

Assertion is wrong, but reason is correct statement.

The correct answer is D (Assertion is wrong, but reason is correct statement) because branched polymers have lower tensile strength, and the intermolecular force of attraction is indeed less than that in linear polymers.

21 Medium

21 of 33

Remembering +4 | -1

A polymer containing nitrogen is

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Correct option: D

Nylon-66

Option D (Nylon-66) is correct because Nylon-66 is a polyamide, meaning it contains nitrogen atoms in its repeating unit due to the amide linkages.

22 Medium

22 of 33

Remembering +4 | -1

Peptide bond is a key feature in:

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Correct option: B

Proteins

Option B (Proteins) is correct because peptide bonds are the characteristic linkages that join amino acids together to form proteins (polypeptides).

23 Medium

23 of 33

Remembering +4 | -1

The polymer obtained by condensation of sebacic acid and hexamethylenediamine is named as

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Correct option: A

Nylon-6

Option D (Nylon-6,10) is correct because Nylon-6,10 is formed by the condensation polymerization of hexamethylenediamine (6 carbons) and sebacic acid (10 carbons).

24 Medium

24 of 33

Remembering +4 | -1

Guttapercha is

View answer and explanation

Correct option: D

All statements are correct.

Option D (All statements are correct) is correct because Guttapercha is indeed trans-polyisoprene, it is a naturally occurring polymer, and it is known for being a relatively hard and resilient material.

25 Medium

25 of 33

Remembering +4 | -1

A process that involves the union of two or more molecules to form a new molecular aggregate without losing any simple molecule is known as:

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Correct option: B

Polymerisation

Option B (Polymerisation) is correct because polymerization is defined as the union of molecules to form a larger aggregate without losing simple molecules.

26 Medium

26 of 33

Remembering +4 | -1

Vulcanization of rubber is carried out by heating a
mixture of

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Correct option: C

isoprene and sulphur

Option C (isoprene and sulphur) is correct because vulcanization involves heating rubber (polymerized isoprene) with sulfur.

27 Medium

27 of 33

Remembering +4 | -1

The polymer used in making synthetic hair wigs is made up of

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Correct option: A

\mathrm{C}{\mathrm{H}_2} = \mathrm{CHCI}

Option A (

\mathrm{C}{\mathrm{H}_2} = \mathrm{CHCI}

) is correct because Saran, a polymer of vinyl chloride, is used for making synthetic hair wigs.

28 Medium

28 of 33

Understanding +4 | -1

Which of the following statements is not true about low density polythene?

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Correct option: D

Highly branched structure

Option A is not true because low-density polythene is not tough; it is relatively flexible and has low tensile strength.

29 Medium

29 of 33

Understanding +4 | -1

Which of the following pairs is not correctly matched?

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Correct option: B

Teflon-thermally stable cross linked polymer of phenol and formaldehyde

Option B (Teflon-thermally stable cross linked polymer of phenol and formaldehyde) is not correctly matched because Teflon is a polymer of tetrafluoroethylene, while a cross-linked polymer of phenol and formaldehyde is Bakelite.

30 Medium

30 of 33

Remembering +4 | -1

An example of natural biopolymer is

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Correct option: D

DNA

Option D (DNA) is correct because DNA is a naturally occurring polymer essential for life.

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 33 single-correct-answer MCQs on POLYMERS.
✓ Try each question before opening its answer. Read the explanation where one is available.
✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.

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