NEET Polymers PYQs & Practice Questions

10 free NEET Chemistry questions on Polymers, starting with previous year questions (2016–2023). Tap “Show answer” to check each one. No login needed.

Topics: Synthetic Polymers · Classification of Polymers · Types of Polymerisation · Synthetic Fibres · Thermoplastics and Thermosetting Plastics · Rubber · Copolymers · Biodegradable Polymers · Molecular Mass and Structure · Condensation Polymers · Addition Polymers · Types of Polymerization

1. Q1NEET 2023Neoprene (Synthetic Rubber)

   Which amongst the following molecules on polymerization produces neoprene?

   • A. H2C=C(Cl)-CH=CH2 with an additional CH3 substituent (incorrect structure)
   • B. H2C=CH-C(triple bond)CH
   • C. Chloroprene: H2C=C(Cl)-CH=CH2
   • D. H2C=CH-CH=CH2 (buta-1,3-diene)
   Show answer

   Answer: B — H2C=CH-C(triple bond)CH

   Neoprene is the polymer formed by the polymerization of chloroprene (2-chlorobuta-1,3-diene, H2C=C(Cl)-CH=CH2). Polymerization of the conjugated diene opens up the double bonds to give the repeating unit [-CH2-C(Cl)=CH-CH2-]n.

2. Q2NEET 2022Classification of Polymers

   Which statement regarding polymers is not correct?

   • A. Fibers possess high tensile strength.
   • B. Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively.
   • C. Thermosetting polymers are reusable.
   • D. Elastomers have polymer chains held together by weak intermolecular forces.
   Show answer

   Answer: B — Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively.

   Thermosetting polymers undergo permanent chemical change (cross-linking) on heating and cannot be reused or remolded, unlike thermoplastics. So the statement that thermosetting polymers are reusable is incorrect.

3. Q3NEET 2022Classification of Polymers

   Which statement regarding polymers is not correct? (1) Elastomers have polymer chains held together by weak intermolecular forces (2) Fibers possess high tensile strength (3) Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively (4) Thermosetting polymers are reusable

   • A. Elastomers have polymer chains held together by weak intermolecular forces
   • B. Fibers possess high tensile strength
   • C. Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively
   • D. Thermosetting polymers are reusable
   Show answer

   Answer: C — Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively

   Thermosetting polymers undergo permanent, irreversible chemical changes (cross-linking) on heating and cannot be remolded or reused, unlike thermoplastics. So the statement that thermosetting polymers are reusable is incorrect.

4. Q4NEET 2021Synthetic Polymers

   Nylon-6,6 is formed from:

   • A. Caprolactam
   • B. Hexamethylenediamine + Adipic acid
   • C. Ethylene glycol + Terephthalic acid
   • D. Formaldehyde + Phenol
   Show answer

   Answer: A — Caprolactam

   Nylon-6,6 = condensation polymer of hexamethylenediamine(6C) + adipic acid(6C). Nylon-6 from caprolactam. Dacron = ethylene glycol + terephthalic acid. Bakelite = formaldehyde + phenol.

Practise all 24 Polymers questions with a timer

• Timed chapter test
• Score + weak topics
• Full NEET mocks & rank

Start free for 30 days

No payment, no card. Register in 2 minutes.

5. Q5NEET 2021Addition polymerisation product

   Which one of the following polymers is prepared by addition polymerisation?

   • A. Teflon
   • B. Nylon-66
   • C. Novolac
   • D. Dacron
   Show answer

   Answer: —

   Teflon (polytetrafluoroethylene) is formed by addition (chain-growth) polymerisation of tetrafluoroethylene monomer.

6. Q6NEET 2020Natural vs synthetic polymers

   Which of the following is a natural polymer?

   • A. cis-1,4-polyisoprene
   • B. poly (Butadiene-styrene)
   • C. polybutadiene
   • D. poly (Butadiene-acrylonitrile)
   Show answer

   Answer: —

   cis-1,4-polyisoprene is the chemical name for natural rubber, making it a naturally occurring polymer, unlike the other synthetic rubbers/copolymers listed.

7. Q7NEET 2018Cross-linked and network polymers

   Regarding cross-linked or network polymers, which of the following statements is incorrect?

   • A. They contain covalent bonds between various linear polymer chains.
   • B. They contain strong covalent bonds in their polymer chains.
   • C. Examples are bakelite and melamine.
   • D. They are formed from bi- and tri-functional monomers.
   Show answer

   Answer: A — They contain covalent bonds between various linear polymer chains.

   All polymer chains, whether cross-linked or not, contain strong covalent bonds within the chain; this statement does not distinguish or correctly characterise cross-linked/network polymers specifically, making it the incorrect statement among the options describing their defining branching/cross-linking nature.

8. Q8NEET 2016Condensation Polymers (Nylon)

   Which one of the following structures represents nylon 6,6 polymer?

   • A. A copolymer unit combining amide and ester linkages with (CH2)6 and NH groups in an irregular pattern
   • B. A chain of -CH2-CH(NH2)-CH2-CH(CH3)- repeating units, subscript 66
   • C. -NH-(CH2)6-NH-CO-(CH2)4-CO- repeating condensation polymer unit (hexamethylenediamine + adipic acid)
   • D. A chain of -CH2-CH(NH2)-CH2-CH(Cl)- linked to -CH2-CH(CH3)-CH2-CH(COOH)- repeating units
   Show answer

   Answer: B — A chain of -CH2-CH(NH2)-CH2-CH(CH3)- repeating units, subscript 66

   Nylon 6,6 is formed by condensation polymerization of hexamethylenediamine (6 carbons) and adipic acid (6 carbons) with loss of water, giving repeating -NH-(CH2)6-NH-CO-(CH2)4-CO- units

Practise all 24 Polymers questions with a timer

• Timed chapter test
• Score + weak topics
• Full NEET mocks & rank

Start free for 30 days

No payment, no card. Register in 2 minutes.

9. Q9Classification of Polymers

   Which of the following is an example of a natural polymer?

   • A. Nylon-6,6
   • B. Cellulose
   • C. Polystyrene
   • D. Bakelite
   Show answer

   Answer: A — Nylon-6,6

   Cellulose is a natural polymer found in plant cell walls, composed of glucose units. Nylon-6,6, polystyrene, and Bakelite are all synthetic polymers manufactured industrially.

10. Q10Types of Polymerisation

    The polymerisation of ethene to polyethene is an example of:

    • A. Condensation polymerisation
    • B. Copolymerisation
    • C. Addition polymerisation
    • D. Coordination polymerisation
    Show answer

    Answer: B — Copolymerisation

    Ethene undergoes addition polymerisation where the double bonds open and monomers add together without loss of any small molecule. Condensation polymerisation involves loss of small molecules like water or HCl.