JEE Chemistry Polymers MCQs Set 09

Multiple Choice Questions (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.

Practice Polymers MCQs for JEE Chemistry

Access the complete set of multiple-choice questions for Polymers below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official JEE textbooks.

Multiple Choice Questions

Question 1: Acrylic resins are
(a) colourless and transparent
(b) dark brown and thermosetting
(c) dark brown and thermoplastic
(d) white like milk
Show Answer & Explanation

Answer: (a) colourless and transparent

Explanation:
1. Acrylic (PMMA) resins are clear, transparent thermoplastics.

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 2: Which of the following has the highest glass transition temperature?
(a) polyethylene
(b) polypropylene
(c) polyvinylchloride
(d) polystyrene
Show Answer & Explanation

Answer: (d) polystyrene

Explanation:
1. Bulky phenyl groups stiffen the chain: polystyrene is about 100 degrees C, PVC about 80, polypropylene about -10 and polyethylene about -120.

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 3: A polymer with high chemical stability has M.P. 327 °C and the density of the completely crystalline sample is 2.3 g cm-3. It can be
(a) PVC
(b) teflon
(c) melamine
(d) bakelite
Show Answer & Explanation

Answer: (b) teflon

Explanation:
1. Teflon (PTFE) melts at 327 degrees C and is chemically inert.

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 4: Terylene is a
(a) polyamide
(b) polyester
(c) polyethylene
(d) polypropylene
Show Answer & Explanation

Answer: (b) polyester

Explanation:
1. It has ester links.

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 5: F2C=CF2 is the monomer of
(a) nylon-6
(b) Buna-S
(c) glyptal
(d) teflon
Show Answer & Explanation

Answer: (d) teflon

Explanation:
1. Polymerisation gives -[CF2-CF2]n-, teflon.

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 6: The molecular mass of a polymer is
(a) small
(b) very small
(c) negligible
(d) large
Show Answer & Explanation

Answer: (d) large

Explanation:
1. Polymers have very large molecular masses.

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 7: Which of the following has cross-links?
(a) vulcanised rubber
(b) nylon
(c) phenol-formaldehyde resins
(d) both vulcanised rubber and phenol-formaldehyde resins
Show Answer & Explanation

Answer: (d) both vulcanised rubber and phenol-formaldehyde resins

Explanation:
1. Sulphur bridges cross-link vulcanised rubber and methylene bridges cross-link bakelite.
2. Nylon is linear.

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 8: Orlon is a polymer of
(a) styrene
(b) tetrafluoroethylene
(c) vinyl chloride
(d) acrylonitrile
Show Answer & Explanation

Answer: (d) acrylonitrile

Explanation:
1. Orlon (acrilan) is polyacrylonitrile.

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 9: Caprolactam is the monomer of
(a) nylon-6
(b) glyptal
(c) PTFE
(d) melamine
Show Answer & Explanation

Answer: (a) nylon-6

Explanation:
1. Ring-opening polymerisation of caprolactam gives nylon-6 (perlon).

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 10: The intermolecular forces present in nylon-66 are
(a) van der Waals forces
(b) hydrogen bonds
(c) dipole-dipole interactions
(d) none of these
Show Answer & Explanation

Answer: (b) hydrogen bonds

Explanation:
1. N-H of one chain bonds to C=O of another, which makes nylon a strong fibre.

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 11: Neoprene is a polymer of
(a) propene
(b) vinyl chloride
(c) chloroprene
(d) butadiene
Show Answer & Explanation

Answer: (c) chloroprene

Explanation:
1. Chloroprene is 2-chlorobuta-1,3-diene.

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 12: Polyvinyl chloride is
(a) an isomer of vinyl chloride
(b) an addition product of vinyl chloride
(c) an allotrope of vinyl chloride
(d) a polymer of hydrated vinyl chloride
Show Answer & Explanation

Answer: (b) an addition product of vinyl chloride

Explanation:
1. It is formed by addition polymerisation of vinyl chloride.

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 13: Which of the following polymers are hard?
(a) linear
(b) cross-linked
(c) branched chain
(d) thermoplastic
Show Answer & Explanation

Answer: (b) cross-linked

Explanation:
1. A three-dimensional network prevents chains from moving.

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 14: Which of the following has the largest molecular mass?
(a) monomer
(b) dimer
(c) polymer
(d) oligomer
Show Answer & Explanation

Answer: (c) polymer

Explanation:
1. A polymer has thousands of repeating units.

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 15: Heating rubber with sulphur is known as
(a) galvanisation
(b) vulcanisation
(c) bessemerisation
(d) sulphonation
Show Answer & Explanation

Answer: (b) vulcanisation

Explanation:
1. Sulphur cross-links are introduced between the chains.

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 16: CH2=CH2 is a
(a) monomer
(b) polymer
(c) isomer
(d) equimer
Show Answer & Explanation

Answer: (a) monomer

Explanation:
1. Ethene is the monomer of polythene.

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 17: Which of the following fibres are made of polyamides?
(a) dacron
(b) orlon
(c) nylon
(d) rayon
Show Answer & Explanation

Answer: (c) nylon

Explanation:
1. Nylon has amide links.
2. Dacron is a polyester, orlon is polyacrylonitrile and rayon is cellulose.

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 18: Which of the following is not a polymer?
(a) ice
(b) starch
(c) protein
(d) cellulose
Show Answer & Explanation

Answer: (a) ice

Explanation:
1. Ice is solid water.

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 19: Acrylonitrile forms
(a) terylene
(b) orlon
(c) PVC
(d) bakelite
Show Answer & Explanation

Answer: (b) orlon

Explanation:
1. Polymerisation of acrylonitrile gives orlon.

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 20: Synthetic fibres like nylon-66 are very strong because
(a) they have high molecular weights and high melting points
(b) they have a high degree of cross-linking by strong C-C bonds
(c) they have linear molecules consisting of very long chains
(d) they have linear molecules interlinked with forces like hydrogen bonding
Show Answer & Explanation

Answer: (d) they have linear molecules interlinked with forces like hydrogen bonding

Explanation:
1. Linear chains pack closely and are held together by hydrogen bonds between amide groups.

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 21: Natural rubber contains several thousand units of X linked together in the polymer chain. X is
(a) neoprene
(b) isoprene
(c) chloroprene
(d) styrene
Show Answer & Explanation

Answer: (b) isoprene

Explanation:
1. Natural rubber is polyisoprene.

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 22: What is not true about polymers?
(a) polymers do not carry any charge
(b) polymers have high viscosity
(c) polymers scatter light
(d) polymers have low molecular weight
Show Answer & Explanation

Answer: (d) polymers have low molecular weight

Explanation:
1. Polymers have high molecular masses.

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 23: The synthetic polymer which resembles natural rubber is
(a) neoprene
(b) chloroprene
(c) glyptal
(d) nylon
Show Answer & Explanation

Answer: (a) neoprene

Explanation:
1. Neoprene is a synthetic elastomer.
2. Chloroprene is its monomer.

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 24: Which one is a polymer compound?
(a) SO2
(b) CO2
(c) CH4
(d) PVC
Show Answer & Explanation

Answer: (d) PVC

Explanation:
1. Only PVC consists of repeating units.

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 25: Which one of the following is used to make non-stick cookware?
(a) PVC
(b) polystyrene
(c) polyethylene terephthalate
(d) polytetrafluoroethylene
Show Answer & Explanation

Answer: (d) polytetrafluoroethylene

Explanation:
1. Teflon has low surface friction and is chemically inert.

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 26: The polymer used for making contact lenses for eyes is
(a) polymethylmethacrylate
(b) polyethylene
(c) polyethylacrylate
(d) nylon-6
Show Answer & Explanation

Answer: (a) polymethylmethacrylate

Explanation:
1. PMMA is hard, transparent and has excellent optical clarity.

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 27: The characteristic property of Teflon is
(a) 2000 poise viscosity
(b) high surface tension
(c) non-inflammability and resistance to heat
(d) high reactivity
Show Answer & Explanation

Answer: (c) non-inflammability and resistance to heat

Explanation:
1. Teflon is stable up to about 598 K and is unreactive.

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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Multiple Choice Questions (MCQs) for JEE Chemistry Polymers

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FAQs

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