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JEE • CHEMISTRY • POLYMERS

Polymers practice · Mixed difficulty

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Practice format and chapter quiz

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 31-60 of 100 questions

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31 Easy
31 of 100
Remembering +4 | -1
Thiokol is a
View answer and explanation
Correct option: C
Rubber
Option C (Rubber) is correct because Thiokol is a synthetic rubber, specifically a polysulfide rubber.
32 Easy
32 of 100
Remembering +4 | -1
Ebonite is
View answer and explanation
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.
33 Easy
33 of 100
Remembering +4 | -1
Terylene is a:
View answer and explanation
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.
34 Medium
34 of 100
Understanding +4 | -1
The compound required for the formation of a thermosetting polymer with methanol is
View answer and explanation
Correct option: D
Phenol
Option D (Phenol) is correct because phenol reacts with formaldehyde (derived from methanol) to form thermosetting polymers like Bakelite.
35 Easy
35 of 100
Remembering +4 | -1
Thermoplastics are:
View answer and explanation
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.
36 Medium
36 of 100
Analyzing +4 | -1
Assertion :- When a rubber band is stretched entropy increases.

Reason :- During expansion entropy increases.
View answer and explanation
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).
37 Easy
37 of 100
Remembering +4 | -1
Which of the following has been used in the manufacture of non-inflammable photographic films?
View answer and explanation
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.
38 Medium
38 of 100
Remembering +4 | -1
If Mw{M_w} is the weight average molecular weight and Mˉn{\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
MˉwMn\frac{{{{\bar M}_w}}}{{{M_n}}}
Option B (MˉwMn\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.
39 Medium
39 of 100
Analyzing +4 | -1
Arrange the following monomers in order of decreasing ability to undergo cationic polymerisation
I.     NO2C6H5−CH=CH2\mathrm{I}\mathrm{.}\,\,\,\,\,\mathrm{N}{\mathrm{O}_2}{\mathrm{C}_6}{\mathrm{H}_5} - \mathrm{CH} = \mathrm{C}{\mathrm{H}_2}
II.     CH2=CH−C6H5CH3\mathrm{II}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_3}
III.     CH2=CH−C6H5OCH3\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.
40 Easy
40 of 100
Understanding +4 | -1
Polyethene, PVC, Teflon and neoprene are all
View answer and explanation
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.
41 Medium
41 of 100
Remembering +4 | -1
PDI for natural polymers is generally close to:
View answer and explanation
Correct option: C
1
Option C (1) is correct because the PDI for natural polymers is generally close to 1.
42 Easy
42 of 100
Understanding +4 | -1
Nylons, polyesters and cotton, all possess strength due to:
View answer and explanation
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.
43 Easy
43 of 100
Remembering +4 | -1
Nylon is a
View answer and explanation
Correct option: C
Polyamide
Option C (Polyamide) is correct because nylon is formed through amide linkages, making it a polyamide.
44 Easy
44 of 100
Remembering +4 | -1
Which of the following is a biodegradable polymer?
View answer and explanation
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.
45 Easy
45 of 100
Remembering +4 | -1
Bakelite is:
View answer and explanation
Correct option: D
Thermosetting
Option D (Thermosetting) is correct because Bakelite is a thermosetting polymer.

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P-BLOCK ELEMENTS 736 MCQs Equilibrium 696 MCQs STRUCTURE OF ATOM 634 MCQs THERMODYNAMICS 536 MCQs CHEMICAL BONDING & MOLECULAR STRUCTURE 514 MCQs SOLUTIONS 480 MCQs
46 Easy
46 of 100
Understanding +4 | -1
Which is the best monomer for getting chain growth polymer?
View answer and explanation
Correct option: C
CH2=CHC6H5\mathrm{C}{\mathrm{H}_2} = \mathrm{CH}{\mathrm{C}_6}{\mathrm{H}_5}
Option C (CH2=CHC6H5\mathrm{C}{\mathrm{H}_2} = \mathrm{CH}{\mathrm{C}_6}{\mathrm{H}_5}) is correct because styrene forms a more stable carbocation intermediate due to resonance stabilization by the phenyl group, facilitating chain growth polymerization.
47 Easy
47 of 100
Remembering +4 | -1
Which can absorb over 90% of its own mass of water and does not stick to wound?
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Correct option: A
Rayon
Option A (Rayon) is correct because rayon is known for its high water absorption capacity and non-sticking properties, making it suitable for wound dressings.
48 Easy
48 of 100
Remembering +4 | -1
In the manufacture of polythene by the Ziegler process using ethylene, the temperature for proper polymerisation required is
View answer and explanation
Correct option: C
50∘50^{\circ} to 80∘C80^{\circ} \mathrm{C}
Option C (50∘50^{\circ} to 80∘C80^{\circ} \mathrm{C}) is correct because the Ziegler process for polythene manufacture typically uses a temperature range of 50∘50^{\circ} to 80∘C80^{\circ} \mathrm{C}.
49 Easy
49 of 100
Remembering +4 | -1
Which type of polymer is cellulose diacetatefibre?
View answer and explanation
Correct option: C
Semi-synthetic
Option C (Semi-synthetic) is correct because cellulose diacetate fiber is derived from a natural polymer (cellulose) through chemical modification.
50 Medium
50 of 100
Remembering +4 | -1
The polymer, which can be stretched and retains its original status on releasing the force is
View answer and explanation
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.
51 Medium
51 of 100
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.
View answer and explanation
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.
52 Easy
52 of 100
Remembering +4 | -1
The chemical name of melamine is:
View answer and explanation
Correct option: C
2, 4, 6-triamino-1, 3, 5-triazine
Option C (2, 4, 6-triamino-1, 3, 5-triazine) is correct because that is the correct IUPAC name for the melamine molecule.
53 Easy
53 of 100
Remembering +4 | -1
Which one among the following is a thermosetting plastic?
View answer and explanation
Correct option: C
Bakelite
Option C (Bakelite) is correct because it is a thermosetting polymer that hardens irreversibly upon heating.
54 Easy
54 of 100
Remembering +4 | -1
Styrene at room temparature is
View answer and explanation
Correct option: B
Liquid
Option B (Liquid) is correct because styrene is a liquid at room temperature.
55 Medium
55 of 100
Remembering +4 | -1
Buna-S is
View answer and explanation
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.
56 Easy
56 of 100
Understanding +4 | -1
Arrange the following in increasing order of their melting point.

(1) Nylon 2,2; (2) Nylon 2,4; (3) Nylon 2,6; (4) Nylon 2,10
View answer and explanation
Correct option: D
4,3,2,14,3,2,1
The correct answer is 4,3,2,14,3,2,1 because as the number of carbon atoms between the amide groups increases, the amide density decreases, leading to a lower melting point.
57 Easy
57 of 100
Remembering +4 | -1
Among the options given below which is not thermosetting plastic
View answer and explanation
Correct option: D
Terylene
The correct answer is D (Terylene) because Terylene is a thermoplastic polymer, not a thermosetting plastic.
58 Easy
58 of 100
Understanding +4 | -1
Assertion (A): Polyvinyl alcohol is obtained by polymerization of vinyl alcohol.

Reason (R): Polyvinyl alcohol is prepared by hydrolysis of polyvinyl acetate.
View answer and explanation
Correct option: B
Both A and R are correct, but R is not the correct explanation of A
Option B (Both A and R are correct, but R is not the correct explanation of A) is correct because both the assertion and the reason are true statements, but the reason does not explain the assertion.
59 Medium
59 of 100
Remembering +4 | -1
The baby feeding bottles are made up of
View answer and explanation
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.
60 Easy
60 of 100
Remembering +4 | -1
Which type of polymer is bakelite?
View answer and explanation
Correct option: C
Condensation polymer
Option C (Condensation polymer) is correct because bakelite is formed through a condensation reaction between formaldehyde and phenol, with the elimination of water.
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