JEE Chemistry Polymers MCQs Set 10

Practice MCQs for JEE Chemistry Polymers

Review structured MCQ sets for JEE Chemistry Polymers. Built according to official JEE guidelines, these downloadable questions support daily revision and core concept reinforcement.

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Navigate directly to the 50 objective questions for Polymers using the digital viewer below. Each practice set includes verified answer keys, allowing students to instantly cross-check their work and identify areas requiring further revision.

Multiple Choice Questions

Question 1: Which of the following is not a polymer?
(a) silk
(b) DNA
(c) DDT
(d) starch
Show Answer & Explanation

Answer: (c) DDT

Explanation:
1. DDT is a small molecule.

Teacher's Note:
1. Always link acid strength to the stability of the carboxylate ion.
2. Electron-withdrawing groups increase acidity and electron-donating groups decrease it.

Question 2: Nylon-66 is a
(a) polyamide
(b) polyester
(c) polystyrene
(d) polyvinyl
Show Answer & Explanation

Answer: (a) polyamide

Explanation:
1. It has repeating amide links.

Teacher's Note:
1. Note the name reaction and write its equation once in your notebook.
2. Such one-step recall questions are common in the JEE and NEET style papers.

Question 3: Isoprene is a valuable substance for making
(a) propene
(b) liquid fuel
(c) synthetic rubber
(d) petrol
Show Answer & Explanation

Answer: (c) synthetic rubber

Explanation:
1. Polymerisation of isoprene gives polyisoprene rubber.

Teacher's Note:
1. Count carbons before and after the reaction to avoid mistakes in chain-length changes.
2. Check whether the reagent is a reducing, oxidising or dehydrating agent before choosing the product.

Question 4: Terylene is used for making
(a) silks
(b) fabrics
(c) seat belts
(d) all of these
Show Answer & Explanation

Answer: (d) all of these

Explanation:
1. Polyester fibre is used in silk-like fabrics, clothing and seat belts.

Teacher's Note:
1. Eliminate options by checking functional groups on both sides of the reaction.
2. Only one option will have the correct functional group and carbon skeleton.

Question 5: Nylon threads are made of
(a) polyvinyl polymer
(b) polyester polymer
(c) polyamide polymer
(d) polyethylene polymer
Show Answer & Explanation

Answer: (c) polyamide polymer

Explanation:
1. Nylon is a polyamide.

Teacher's Note:
1. Revise the physical properties such as hydrogen bonding and boiling points together with the chemistry.
2. Compare similar compounds in pairs when you are asked to rank them.

Question 6: Nylon-66 is
(a) -[CO-(CH2)4-CO-NH-(CH2)6-NH]n-
(b) -[NH-(CH2)5-CO]n-
(c) -[CH2-C(CH3)(COOCH3)]n-
(d) -[CF2-CF2]n-
Show Answer & Explanation

Answer: (a) -[CO-(CH2)4-CO-NH-(CH2)6-NH]n-

Explanation:
1. Adipic acid (four CH2 between two CO) and hexamethylenediamine (six CH2 between two NH) give the first unit.
2. Option b is nylon-6, c is PMMA and d is teflon.

Teacher's Note:
1. Learn the reactivity order of acid derivatives: acyl chloride, anhydride, ester, amide.
2. Most questions of this type are solved by recalling the standard reagent and product pair.

Question 7: PVC is a polymer of
(a) CH2=CH2
(b) CH2=CH-Cl
(c) CH2=CH-CH2Cl
(d) CH3-CH=CH-Cl
Show Answer & Explanation

Answer: (b) CH2=CH-Cl

Explanation:
1. Vinyl chloride is CH2=CHCl.

Teacher's Note:
1. Always link acid strength to the stability of the carboxylate ion.
2. Electron-withdrawing groups increase acidity and electron-donating groups decrease it.

Question 8: PVC is used for
(a) manufacture of cosmetics
(b) manufacture of tyres
(c) manufacture of non-stick pans
(d) manufacture of plastic pipes
Show Answer & Explanation

Answer: (d) manufacture of plastic pipes

Explanation:
1. PVC is rigid, tough and a good insulator, so it is used in pipes.

Teacher's Note:
1. Note the name reaction and write its equation once in your notebook.
2. Such one-step recall questions are common in the JEE and NEET style papers.

Question 9: Polythene is a resin obtained by polymerisation of the monomer unit
(a) butadiene
(b) ethylene
(c) isoprene
(d) propylene
Show Answer & Explanation

Answer: (b) ethylene

Explanation:
1. Polythene is poly(ethylene).

Teacher's Note:
1. Count carbons before and after the reaction to avoid mistakes in chain-length changes.
2. Check whether the reagent is a reducing, oxidising or dehydrating agent before choosing the product.

Question 10: A cationic polymerisation chain ends in -CH2-C(CH3)2-CH2-C(CH3)2+. The monomer is
(a) H2C=C(CH3)2
(b) (CH3)2C=C(CH3)2
(c) CH3CH=CHCH3
(d) CH3CH=CH2
Show Answer & Explanation

Answer: (a) H2C=C(CH3)2

Explanation:
1. The repeating unit -CH2-C(CH3)2- comes from isobutylene, CH2=C(CH3)2.

Teacher's Note:
1. Eliminate options by checking functional groups on both sides of the reaction.
2. Only one option will have the correct functional group and carbon skeleton.

Question 11: The monomer of nylon-6 is
(a) HO-CH2-CH2-OH with terephthalic acid
(b) caprolactam, with a little water to start the reaction
(c) F2C=CF2
(d) H2C=CH2
Show Answer & Explanation

Answer: (b) caprolactam, with a little water to start the reaction

Explanation:
1. Nylon-6 forms by ring-opening of caprolactam.
2. Option a is terylene, c is teflon and d is polythene.

Teacher's Note:
1. Revise the physical properties such as hydrogen bonding and boiling points together with the chemistry.
2. Compare similar compounds in pairs when you are asked to rank them.

Question 12: Which of the following is teflon?
(a) -[CH2-CH2]n-
(b) -[CH2-CH(CH3)]n-
(c) -[CF2-CF2]n-
(d) -[CHF-CFCl]n-
Show Answer & Explanation

Answer: (c) -[CF2-CF2]n-

Explanation:
1. Teflon is made of CF2 units, the fully fluorinated polymer.

Teacher's Note:
1. Learn the reactivity order of acid derivatives: acyl chloride, anhydride, ester, amide.
2. Most questions of this type are solved by recalling the standard reagent and product pair.

Question 13: Thermosetting plastics are
(a) soluble in water
(b) soluble in alcohol
(c) soluble in benzene
(d) insoluble
Show Answer & Explanation

Answer: (d) insoluble

Explanation:
1. The cross-linked network does not dissolve in solvents.

Teacher's Note:
1. Always link acid strength to the stability of the carboxylate ion.
2. Electron-withdrawing groups increase acidity and electron-donating groups decrease it.

Question 14: Cellulose is
(a) (C6H10O5)n
(b) (C3H3N3)n
(c) (C3H6N6)n
(d) (C12H22O11)n
Show Answer & Explanation

Answer: (a) (C6H10O5)n

Explanation:
1. Cellulose is a polymer of glucose units C6H10O5.

Teacher's Note:
1. Note the name reaction and write its equation once in your notebook.
2. Such one-step recall questions are common in the JEE and NEET style papers.

Question 15: Starch consists of two fractions: one is alpha-amylose and the other is
(a) amylopectin
(b) glycogen
(c) pectin amide
(d) alginic acid
Show Answer & Explanation

Answer: (a) amylopectin

Explanation:
1. Starch is about 20 percent amylose (linear) and 80 percent amylopectin (branched).

Teacher's Note:
1. Count carbons before and after the reaction to avoid mistakes in chain-length changes.
2. Check whether the reagent is a reducing, oxidising or dehydrating agent before choosing the product.

Question 16: The process of heat-softening, moulding and cooling to rigidity can be repeated for
(a) thermoplastics
(b) thermosetting plastics
(c) both of these
(d) none of these
Show Answer & Explanation

Answer: (a) thermoplastics

Explanation:
1. Thermoplastics can be remelted and remoulded.

Teacher's Note:
1. Eliminate options by checking functional groups on both sides of the reaction.
2. Only one option will have the correct functional group and carbon skeleton.

Question 17: In elastomers, the intermolecular forces are
(a) nil
(b) weak
(c) strong
(d) very strong
Show Answer & Explanation

Answer: (b) weak

Explanation:
1. Weak forces allow elastomers to be stretched and then recover.

Teacher's Note:
1. Revise the physical properties such as hydrogen bonding and boiling points together with the chemistry.
2. Compare similar compounds in pairs when you are asked to rank them.

Question 18: Cellulose is a polymer of
(a) fructose
(b) ribose
(c) glucose
(d) sucrose
Show Answer & Explanation

Answer: (c) glucose

Explanation:
1. It is a polymer of D-glucose units.

Teacher's Note:
1. Learn the reactivity order of acid derivatives: acyl chloride, anhydride, ester, amide.
2. Most questions of this type are solved by recalling the standard reagent and product pair.

Question 19: Which of the following polymers has an ester linkage?
(a) nylon-66
(b) PVC
(c) terylene
(d) SBR
Show Answer & Explanation

Answer: (c) terylene

Explanation:
1. Terylene is a polyester.

Teacher's Note:
1. Always link acid strength to the stability of the carboxylate ion.
2. Electron-withdrawing groups increase acidity and electron-donating groups decrease it.

Question 20: Acrilan is a hard, horny and high melting material. Which of the following represents its structure?
(a) -[CH2-CHCl]n-
(b) -[CH2-CH(CN)]n-
(c) -[CH2-C(CH3)(COOCH3)]n-
(d) -[CH2-CH(COOC2H5)]n-
Show Answer & Explanation

Answer: (b) -[CH2-CH(CN)]n-

Explanation:
1. Acrilan is polyacrylonitrile, which has a cyano group on every other carbon.

Teacher's Note:
1. Note the name reaction and write its equation once in your notebook.
2. Such one-step recall questions are common in the JEE and NEET style papers.

Question 21: Which of the following has amide links?
(a) protein
(b) nylon
(c) peptide
(d) all of these
Show Answer & Explanation

Answer: (d) all of these

Explanation:
1. Proteins and peptides have amide (peptide) links, and so does nylon.

Teacher's Note:
1. Count carbons before and after the reaction to avoid mistakes in chain-length changes.
2. Check whether the reagent is a reducing, oxidising or dehydrating agent before choosing the product.

Question 22: Which of the following is a polyamide?
(a) teflon
(b) nylon-66
(c) terylene
(d) bakelite
Show Answer & Explanation

Answer: (b) nylon-66

Explanation:
1. Nylon-66 has repeating amide links.

Teacher's Note:
1. Eliminate options by checking functional groups on both sides of the reaction.
2. Only one option will have the correct functional group and carbon skeleton.

Question 23: Which of the following is a fully fluorinated polymer?
(a) neoprene
(b) teflon
(c) thiokol
(d) PVC
Show Answer & Explanation

Answer: (b) teflon

Explanation:
1. Teflon has only C-F bonds.

Teacher's Note:
1. Revise the physical properties such as hydrogen bonding and boiling points together with the chemistry.
2. Compare similar compounds in pairs when you are asked to rank them.

Question 24: Three-dimensional molecules with cross-links are formed in the case of a
(a) thermoplastic
(b) thermosetting plastic
(c) both of these
(d) neither of these
Show Answer & Explanation

Answer: (b) thermosetting plastic

Explanation:
1. Cross-linking gives thermosetting plastics.

Teacher's Note:
1. Learn the reactivity order of acid derivatives: acyl chloride, anhydride, ester, amide.
2. Most questions of this type are solved by recalling the standard reagent and product pair.

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FAQs

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