JEE Chemistry Polymers MCQs Set 08

Download JEE MCQs for JEE Chemistry: Polymers

Access targeted multiple-choice questions for Polymers designed to align with the latest JEE academic syllabus for JEE Chemistry. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.

Chapter-wise Objective Questions: Polymers

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: The monomers used in the production of nylon-66 are
(a) hexamethylenediamine and ethylene glycol
(b) adipic acid and ethylene glycol
(c) adipic acid and hexamethylenediamine
(d) dimethyl terephthalate and ethylene glycol
Show Answer & Explanation

Answer: (c) adipic acid and hexamethylenediamine

Explanation:
1. Nylon-66 has six carbons in the diamine and six in the diacid.

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: A raw material used in making nylon is
(a) adipic acid
(b) butadiene
(c) ethylene
(d) methyl methacrylate
Show Answer & Explanation

Answer: (a) adipic acid

Explanation:
1. Adipic acid is the diacid used in nylon-66.

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: Nylon is formed when a dicarboxylic acid is treated with a
(a) dihydric alcohol
(b) polyhydric alcohol
(c) diamine
(d) diester
Show Answer & Explanation

Answer: (c) diamine

Explanation:
1. Diacid plus diamine gives amide links.
2. A dihydric alcohol would give a polyester.

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: Vinyl chloride can be converted into PVC. In this reaction the catalyst used is
(a) peroxides
(b) cuprous chloride
(c) anhydrous zinc chloride
(d) anhydrous AlCl3
Show Answer & Explanation

Answer: (a) peroxides

Explanation:
1. Free-radical addition polymerisation is initiated by peroxides.

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: Terylene is
(a) an addition polymer with a benzene ring in every repeating unit
(b) a condensation polymer with a benzene ring in every repeating unit
(c) an addition polymer with two carbon atoms in every repeating unit
(d) a condensation polymer with two nitrogen atoms in every repeating unit
Show Answer & Explanation

Answer: (b) a condensation polymer with a benzene ring in every repeating unit

Explanation:
1. Terylene is a polyester of terephthalic acid, so each repeating unit has a benzene ring and it is a condensation polymer.
2. It contains no nitrogen.

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: Teflon is a polymer of the monomer
(a) monofluoroethylene
(b) trifluoroethylene
(c) difluoroethylene
(d) tetrafluoroethylene
Show Answer & Explanation

Answer: (d) tetrafluoroethylene

Explanation:
1. Teflon is polytetrafluoroethylene, from CF2=CF2.

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: Acetate rayon is made from
(a) acetic acid
(b) glycerol
(c) starch
(d) cellulose
Show Answer & Explanation

Answer: (d) cellulose

Explanation:
1. Cellulose is acetylated with acetic anhydride to give cellulose acetate.

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: The compound required along with methanal for the formation of a thermosetting polymer is
(a) benzene
(b) phenylamine
(c) benzaldehyde
(d) phenol
Show Answer & Explanation

Answer: (d) phenol

Explanation:
1. Phenol and methanal give bakelite.

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: Which polymer is formed from chloroethene?
(a) teflon
(b) polyethene
(c) PVC
(d) nylon
Show Answer & Explanation

Answer: (c) PVC

Explanation:
1. Chloroethene is vinyl chloride, the monomer of PVC.

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: The catalyst used for the polymerisation of olefins is
(a) Ziegler-Natta catalyst
(b) Wilkinson's catalyst
(c) Pd catalyst
(d) Zeise's salt catalyst
Show Answer & Explanation

Answer: (a) Ziegler-Natta catalyst

Explanation:
1. Ziegler-Natta catalyst, TiCl4 with an aluminium alkyl, gives stereoregular polyolefins.

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: Rayon yarns are obtained from
(a) polymethylene
(b) polyesters
(c) cellulose
(d) styrene
Show Answer & Explanation

Answer: (c) cellulose

Explanation:
1. Rayon is regenerated cellulose.

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 one of the following monomers gives the polymer neoprene on polymerisation?
(a) CF2=CF2
(b) CH2=CHCl
(c) CCl2=CCl2
(d) CH2=C(Cl)-CH=CH2
Show Answer & Explanation

Answer: (d) CH2=C(Cl)-CH=CH2

Explanation:
1. Neoprene is polychloroprene, from 2-chlorobuta-1,3-diene.

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: Terylene is the polymer of
(a) ethylene glycol and terephthalic acid
(b) melamine and formaldehyde
(c) vinyl chloride and formaldehyde
(d) hexamethylenediamine and adipic acid
Show Answer & Explanation

Answer: (a) ethylene glycol and terephthalic acid

Explanation:
1. Esterification gives the polyester terylene.

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: The compound used in the manufacture of terylene is
(a) ethylene
(b) vinyl chloride
(c) ethylene glycol
(d) adipic acid
Show Answer & Explanation

Answer: (c) ethylene glycol

Explanation:
1. Ethylene glycol is one of the two monomers of terylene.

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: PVC is made by the polymerisation of
(a) ethylene
(b) 1-chloropropene
(c) propene
(d) 1-chloroethene
Show Answer & Explanation

Answer: (d) 1-chloroethene

Explanation:
1. 1-Chloroethene is 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 16: The condensation product of caprolactam is
(a) nylon-6
(b) nylon-66
(c) nylon-60
(d) nylon-6,10
Show Answer & Explanation

Answer: (a) nylon-6

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

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: Which of the following is resistant to boiling aqua regia?
(a) polythene
(b) perspex
(c) teflon
(d) bakelite
Show Answer & Explanation

Answer: (c) teflon

Explanation:
1. Teflon is inert to all common chemicals, including aqua regia.

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: Which of the following is a synthetic polymer?
(a) rubber
(b) perspex
(c) protein
(d) cellulose
Show Answer & Explanation

Answer: (b) perspex

Explanation:
1. Perspex is synthetic polymethyl methacrylate.
2. Rubber, protein and cellulose are natural.

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: The mass average molecular mass and number average molecular mass of a polymer are 40000 and 30000 respectively. The polydispersity index of the polymer will be
(a) less than 1
(b) greater than 1
(c) 1
(d) 0
Show Answer & Explanation

Answer: (b) greater than 1

Explanation:
1. PDI = Mw/Mn = 40000/30000 = 1.33, which is greater than 1.

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: In the process of forming mercerised cellulose, the swelling of cellulose is caused by
(a) water
(b) Na2CO3
(c) aqueous NaOH
(d) aqueous HCl
Show Answer & Explanation

Answer: (c) aqueous NaOH

Explanation:
1. Mercerisation treats cotton with concentrated aqueous NaOH.

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: Rayon is
(a) natural silk
(b) artificial silk
(c) a natural plastic or rubber
(d) a synthetic plastic
Show Answer & Explanation

Answer: (b) artificial silk

Explanation:
1. Rayon is regenerated cellulose fibre, also called artificial silk.

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: As the molecular weight of a polymer increases, its tensile strength
(a) increases
(b) decreases
(c) remains unchanged
(d) is uncertain
Show Answer & Explanation

Answer: (a) increases

Explanation:
1. Longer chains give greater intermolecular attraction and entanglement, so strength rises.

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: Triethyl aluminium and titanium chloride used in the plastic industry are a
(a) vulcaniser
(b) plasticiser
(c) Ziegler-Natta catalyst
(d) telomer
Show Answer & Explanation

Answer: (c) Ziegler-Natta catalyst

Explanation:
1. Al(C2H5)3 + TiCl4 is the Ziegler-Natta catalyst.

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: Glyptals are chiefly employed in
(a) toy making
(b) surface coating
(c) photofilm making
(d) electrical insulators
Show Answer & Explanation

Answer: (b) surface coating

Explanation:
1. Glyptal alkyd resins are used in paints and lacquers.

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 25: The sterile gauze used in medicine is obtained by oxidising cellulose with
(a) nitrogen
(b) KMnO4
(c) nitrogen dioxide
(d) potassium chlorate
Show Answer & Explanation

Answer: (c) nitrogen dioxide

Explanation:
1. Oxidised cellulose, which is absorbable, is made with NO2.

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 26: Ethylene-propylene rubber (EPR) is
(a) unsaturated, stereoregular
(b) saturated, stereoregular
(c) atactic, unsaturated
(d) syndiotactic, unsaturated
Show Answer & Explanation

Answer: (b) saturated, stereoregular

Explanation:
1. Ethene and propene both lose their double bonds on polymerisation, leaving a saturated chain made with a stereospecific catalyst.

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 27: Neoprene, a synthetic rubber, contains which of the following elements besides C and H?
(a) N
(b) O
(c) Cl
(d) F
Show Answer & Explanation

Answer: (c) Cl

Explanation:
1. Neoprene is polychloroprene.

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.

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FAQs

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