Polymers PYQs Set 4 (PDF)

Set 4 of 6 · Questions 91-120 of 153

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Polymers · Set 4 (Q91-120)
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91. $Natural rubber has$ (1) $alternate c i s ‐and trans‐configuration$ (2) $random c i s ‐and trans‐configuration$ (3) $all c i s ‐configuration$ (4) $all trans‐configuration. (NEET‐I2016)$ 92. $Which is true about Buna-N?$ (1) $It is a linear polymer of 1, 3-butadiene.$ (2) $It is obtained by copolymerization of 1, 3- butadiene and styrene.$ (3) $It is obtained by copolymerization of 1, 3- butadiene and acrylonitrile.$ (4) $The suffix N in Buna-N stands for its natural occurrence$ 93. $Bulletproof helmets are made from$ (1) $lexan$ (2) $saran$ (3) $glyptal$ (4) $thiokol.$ 94. $In polymer Buna-S; 'S' stands for :$ (1) $Styrene$ (2) $Sulphur$ (3) $Strength$ (4) $Sulphonation$ 95. $The monomers for Bakelite are$ (1) $phenol and formaldehyde$ (2) $acetone and formaldehyde$ (3) $chloroprene and phenol$ (4) $acetaldehyde and methanol.$ 96. $Identify homopolymer from following.$ (1) $Polyacrylonitrile$ (2) $Glyptal$ (3) $Polycarbonate$ (4) $Buna-s$ 97. $Intermolecular forces in nylon- 6,6 are$ (1) $dipole-dipole interactions$ (2) $hydrogen bonding$ (3) $van der Waal's forces$ (4) $ionic bonds$ 98. $Which statement is correct?$ (1) $Buna-S is a synthetic and linear thermosetting polymer$ (2) $Neoprene is addition copolymer used in plastic bucket manufacturing$ (3) $Synthesis of Buna-S needs nascent oxygen.$ (4) $Buna-N is a natural polymer.$ 99. $Natural rubber is a polymer of$ (1) $styrene$ (2) $ethyne$ (3) $butadiene$ (4) $isoprene. (1999)$ 100. $Monomer of Novolacis :$ (1) $3-Hydroxybutanoic acid$ (2) $phenol and melamine$ (3) $o-Hydroxymethylphenol$ (4) $1 3-Butadiene and styrene$ 101. $Orlon fibres are made up of :$ (1) $Polyacrylonitrile$ (2) $Polyesters$ (3) $Polyamide$ (4) $Cellulose$ 102. $Monomers of nylon 2-nylon 6 are$ (1) (2) (3) (4) 103. $Which of the following is a biodegradable polymer ?$ (1) $(- H N - (C H_{2})_{6} N H C O - (C H_{2})_{4} - C (= O) -)_{n}$ (2) $(- H N - (C H_{2})_{5} C O N H - C H_{2} - C (= O) -)_{n}$ (3) $(- H N - (C H_{2})_{5} - C (= O) -)_{n}$ (4) 104. $Which of the following polymer is used in paints?$ (1) $Gutta percha$ (2) $Melamine$ (3) $Buna-S$ (4) $Novolac$ 105. $The polymer used in making handles of cookers and frying pans is$ (1) $bakelite$ (2) $nylon-2-nylon-6$ (3) $orlon$ (4) $polyvinyl chloride.$ 106. $Type of reaction involved in the initial step in the formation of bakelite$ (1) $electrophilic substitution$ (2) $electrophilic addition$ (3) $nucleophilic substitution$ (4) $nucleophilic addition$ 107. $The copolymer formed by addition polymerization of styrene and acrylonitrile in the presence of peroxide is :$ (1) $[- C (C_{6} H_{5}) (C H_{3}) - C H (C N) - C H_{2} -]_{n}$ (2) $[- C H_{2} - C H (C_{6} H_{5}) - C H_{2} - C H (C N) -]_{n}$ (3) $[- C H_{2} - C H (C_{6} H_{5}) - C H (C N) - C H_{2} -]_{n}$ (4) $[- C H (C_{6} H_{5}) - C H_{2} - C H_{2} - C H (C N) -]_{n}$ 108. $Which of the following is an example of polyester?$ (1) $Butadiene-styrene copolymer$ (2) $Melamine polymer$ (3) $Neoprene$ (4) $Poly- β -hydroxybutyrate-co- β -hydroxy valerate$ 109. $The polymer obtained with methylene bridges by condensation polymerisation$ (1) $PVC$ (2) $buna-S$ (3) $polyacrylonitrile$ (4) $bakelite$ 110. $Which one of the following is an example of thermosetting polymers ?$ (1) $Neoprene$ (2) $Buna-N$ (3) $Nylon 6, 6$ (4) $Bakelite$ 111. $Observe the following polymers. I. PHBV II. Nylon-2-nylon-6 III. Glyptal IV. Bakelite Biodegradable polymer(s) from the above is/are$ (1) $III$ (2) $I and II$ (3) $IV$ (4) $III and IV$ 112. $The polymer that is used as a substitute for wool in making commercial fibres is$ (1) $melamine$ (2) $nylon‐6, 6$ (3) $polyacrylonitrile$ (4) $buna‐N(OdishaNEET2019)$ 113. $Match the following : List I (A) Teflon (B) Anionic polymerisation (C) Cationic polymerisation (D) Thermosetting polymer List II I. SnCl_{2} II. C_{2} F_{4} III. Bakelite IV. Polystyrene V. RLi The correct answer is A B C D$ (1) $II I V III$ (2) $II V I IV$ (3) $II V I III$ (4) $V II I IV$ 114. $Match List I with List II List I (Name of polymer) A. Glyptal B. Neoprene C. Acrilan D. LDP List II (Uses) I. Flexible pipes II. Synthetic wool III. Paints and Lacquers IV. Gaskets Choose the correct answer from the options given below :-$ (1) $A-III B-II C-IV, D-I$ (2) $A-III,B-IV,C-II,D-I$ (3) $A-III, B-IV, C-L D-II$ (4) $A-IIL B-I, C-IV, D-II$ 115. $Structure of some important polymers are given. Which one represents Buna-S ?$ (1) $(- C H_{2} - C (C H_{3}) = C H - C H_{2} -)_{n}$ (2) $(- C H_{2} - C H = C H - C H_{2} - C H (C_{6} H_{5}) - C H_{2} -)_{n}$ (3) $(- C H_{2} - C H = C H - C H_{2} - C H (C N) - C H_{2} -)_{n}$ (4) $(- C H_{2} - C (C l) = C H - C H_{2} -)_{n}$ 116. $Which of the following is not a semi-synthetic polymer?$ (1) $Cis-polyisoprene$ (2) $Cellulose nitrate$ (3) $Cellulose acetate$ (4) $Vulcanised rubber$ 117. $The polymer formed on heating Novolac with formaldehyde is :$ (1) $Bakelite$ (2) $Polyester$ (3) $Melamine$ (4) $Nylon6, 6$ 118. $Which from following polymers is classified as fibres depending on intermolecular forces?$ (1) $Vulcanized rubber$ (2) $Buna-s$ (3) $Terylene$ (4) $Polystyrene$ 119. $Which one of the following is not a condensation polymer?.$ (1) $Melamine$ (2) $Glyptal$ (3) $Dacron$ (4) $Neoprene(2012)$ 120. $How many of the following polymers are addition polymer (i) Polyvinyl chloride (ii) Terylene (iii) Teflon (iv) Neoprene (v) Buna-S (vi) Nylon-6,6 (vii) Natural rubber (viii) Bakelite$