Polymers PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Polymers · Set 1 (Q1-30)
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1. $The polymer, which can be stretched and retains its original status on releasing the force is$ (1) $Bakelite$ (2) $Nylon 6,6$ (3) $Buna-N$ (4) $Terylene$ 2. $The formation of which of the following polymers involves hydrolysis reaction ?$ (1) $Bakelite$ (2) $Nylon 6,6$ (3) $Terylene$ (4) $Nylon 6$ 3. $Which from following polymers is obtained from C_{2} F_{4} ?$ (1) $PVC$ (2) $Polyisobutylene$ (3) $Polyacrylonitrile$ (4) $Teflon$ 4. $Which among the following polymers has high tensile strength and is used to obtain tyre cords?$ (1) $Teflon$ (2) $PHBV$ (3) $Nylon-6$ (4) $Dacron$ 5. $A polymer sample contains 3 molecules of molar mass 10^{3}, 3 molecules of molar mass 500 and 4 molecules of molar mass 200 . What is its weight average molecular mass?$ (1) $530$ (2) $737.7$ (3) $834.4$ (4) $821.6$ 6. $Which one ofthe following is used to make ‘non‐stick’cookware7.$ (1) $Polyethylene terephthalate$ (2) $Polytetrafluoroethylene$ (3) $PVC$ (4) $Polystyrene (1997)$ 7. $Which of the following statements about low density polythene is FALSE?$ (1) $It is a poor conductor of electricity.$ (2) $Its synthesis required dioxygen or a peroxide initiator as a catalyst.$ (3) $It is used in the manufacture of buckets, dust-bins etc.$ (4) $Its synthesis requires high pressure.$ 8. $Identify the condensation polymers from the following PHBV, Buna-N, Neoprene, Nylon-6, Glyptal A B C D E$ (1) $A, B, D$ (2) $B, C, D$ (3) $B, C, E$ (4) $A, D, E$ 9. $Match the following: List-I (polymer) (A) Bakelite (B) Natural rubber (C) Glyptal (D) Nylon 2-Nylon 6 List-II (Monomer/s) (I) 2-Methyl-1,3-butadiene (II) Glycine + Aminocaproic acid (III) Phenol + formaldehyde (IV) Phthalic acid + ethylene glycol The correct answer is$ (1) $A - IV, B - I, C - II, D - III$ (2) $A - III, B - I, C - IV, D - II$ (3) $A - III, B - II, C - IV, D - I$ (4) $A - II, B - III, C - I, D - IV$ 10. $The correct match between item I and item II is: Item - I Item - II A. Natural rubber (I) 1, 3-butadience +styrene B. Neoprene (II) 1, 3-butadience +acrylonitrile C. Buna-N (III) Chloroprene D. Buna-S (IV) Isoprene$ (1) $(A)-(III), (B)-(IV), (C)-(I), (D)-(II)$ (2) $(A)-(IV), (B)-(III), (C)-(II), (D)-(I)$ (3) $(A)-(III), (B)-(IV), (C)-(II), (D)-(I)$ (4) $(A)-(IV), (B)-(III), (C)-(I), (D)-(II)$ 11. $Which of the following vinyl derivatives is the most reactive towards anionic polymerisation?$ (1) $CH_{2} = CH - CH_{2} - CH_{3}$ (2) $CH_{2} = CH - CH_{2} - OE$ (3) $CH_{2} = CH - Cl$ (4) $CH_{2} = CH - C \equiv N$ 12. $Correct statement for thermoplastic polymer is$ (1) $it does not become soft on heating under pressure$ (2) $it cannot be remoulded$ (3) $it is either linear or branched chain polymer$ (4) $it is cross-linked polymer.$ 13. $Which of the following polymers is not obtained by condensation polymerization?$ (1) $Buna- N$ (2) $Nylon 6$ (3) $Bakelite$ (4) $Nylon 6,6$ 14. $Whichoneofthefollowingmonomersgives the polymer neoprene on polymerization7.$ (1) $C H_{2} = C H C l$ (2) $C C 1_{2} = C C l_{2}$ (3) $C H_{2} = C (C l) - C H = C H_{2}$ (4) $C F_{2} = C F_{2} (2003)$ 15. $In which of the following pairs the polymer is correctly matched with the forces possessed by them. A. Neoprene Weak intermolecular forces B. Terylene Hydrogen bonding C. Polystyrene Very weak intermolecular forces D. Polythene Hydrogen bonding$ (1) $B, C$ (2) $C, D$ (3) $A, B$ (4) $A, D$ 16. $A polymer contains 50 molecules with molecular mass 5000,100 molecules with molecular mass 10,000 and 50 molecules with molecular mass 15,000 . Calculate number average molecular mass?$ (1) $5,000$ (2) $75,000$ (3) $10,000$ (4) $20,000$ 17. $Which from the following polymers is used to obtain plastic dinner ware?$ (1) $Bakelite$ (2) $Teflon$ (3) $Melamine-formaldehyde$ (4) $Polyacrylonitrile$ 18. $Vulcanization of rubber is carried out by heating a mixture of:$ (1) $isoprene and styrene$ (2) $neoprene and sulphur$ (3) $isoprene and sulphur$ (4) $neoprene and styrene$ 19. $The monomers of nylon-6,6(X) and terylene (Y) are$ (1) (2) (3) (4) 20. $Regarding cross‐linked or network polymers, which of the following statements is incorrect?.$ (1) $They contain covalent bonds between various linear polymer chains.$ (2) $They are formed from bi‐ and tri‐ functional monomers.$ (3) $Examples are bakelite and melamine.$ (4) $They contain strong covalent bonds in their polymer chains. (NEET2018)$ 21. $A biodegradable polyamide can be made from:$ (1) $Glycine and isoprene$ (2) $Hexamethylene diamine and adipic acid$ (3) $Glycine and aminocaproic acid$ (4) $Styrene and caproic acid$ 22. $Identify the correct statement from the following with respect to high density polythene$ (1) $TiCl_{4} and Et_{3} Al used as catalyst for preparation$ (2) $Obtained by the polymerization of ethene at 350 - 570 K$ (3) $Has highly branched structure$ (4) $Chemically active$ 23. $Of the following which one is classified as polyester polymer?$ (1) $Terylene$ (2) $Bakelite$ (3) $Melamine$ (4) $Nylon‐6,6(2011)$ 24. $Which of the following is a natural polymer?$ (1) $Nylon$ (2) $Teflon$ (3) $Linen$ (4) $Orlon$ 25. $Which one of the following is an example of thermosetting polymer7.$ (1) $(- C H_{2} - C (C l) = C H - C H_{2} -)_{n}$ (2) $(- C H_{2} - C H (C l) -)_{n}$ (3) $(- N H - (C H_{2})_{6} - N H - C (= O) - (C H_{2})_{4} - C (= O) -)_{n}$ (4) $(2014)$ 26. $Consider the Assertion and Reason below: Assertion(A) : Ethene polymerized in the presence of Ziegler Natta Catalyst at high temperature and pressure is used to make buckets and dustbins. Reason (R):High density polymers are closely packed and are chemically inert. Choose the correct answer from the following:$ (1) $Both (A) and (R) are correct and (R) is the correct explanation of (A).$ (2) $Both (A) and (R) are correct but (R) is not the correct explanation of (A.)$ (3) $(A) is correct but (R) is wrong.$ (4) $(A) and (R) both are wrong.$ 27. $Which compound forms linear polymer due to H‐bond?.$ (1) $H_{2} O$ (2) $N H_{3}$ (3) $H F$ (4) $H C l (2000)$ 28. $Match the following List - I List - II (Polymer Type) (Example) (A) Fibre (I) Bakelite(B) Elastomer (II) Polystyrene(C) Thermosetting (III)Neoprene polymer(D) Thermoplastic (IV) Dacron polymer The correct answer is$ (1) $A - III, B - IV, C I, D II$ (2) $A-IV, B - III, C-I, D - II$ (3) $A-II, B - I, C-IV, D - III$ (4) $A-IV, B - I, C-II, D - III$ 29. $Given below are two statements, one is Assertion (a) and other is Reason (R). Assertion (a) : Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties. Reason (R) : The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with coiled structure. In the light of the above statements, choose the correct one from the options given below$ (1) $Both (a) and (R) are true and (R) is the correct explanation of (a)$ (2) $Both (a) and (R) are true but (R) is not the correct explanation of (a).$ (3) $(a) is true but (R) is false.$ (4) $(a) is false but (R) is true.$ 30. $Poly dispersity index of a polymer is 1.25 If M_{n} is 800 , what is its M_{w} ?$ (1) $850$ (2) $900$ (3) $950$ (4) $1000$