Chapter 30

Match the following: List I List II (Polymer) \(\quad\) (Polymerizing units) 1\. Bakelite (i) Butadiene and styrene 2\. Dacron (ii) Phenol and methanal 3\. Nylon-66 (iii) 1,2 -dihydrooxyethane and dimethyl terephthalate 4\. Buna-S (iv) Urea and methanal (v) 1 , 6-hexanedioic acid and 1,6 -diamino hexane The correct matching is: \(\begin{array}{llll}1 & 2 & 3 & 4\end{array}\) (a) (iii) (v) (ii) (iv) (b) (ii) (iii) (iv) (i) (c) (iv) (iii) (v) (i) (d) (ii) (iii) (v) (i)

Match the following: List I List II 1\. Phenol+formaldehyde (i) Synthetic rubber 2\. Terephthalic acid \(+\) (ii) Bakelite ethylene glycol 3\. Caprolactam (iii) Nylon-66 4\. Butadiene \(+\) styrene (iv) Terylene The correct matching is: 1 \(\begin{array}{lll}2 & 3 & 4\end{array}\) (a) (iv) (ii) (iii) (i) (b) (ii) (iv) (iii) (i) (c) (iii) (ii) (i) (iv) (d) (ii) (iii) (iv) (i)

Which of the following is a polyamide? [2005] (a) Teflon (b) Nylon-6, 6 (c) Terylene (d) Bakelite

Which of the following is a fully fluorinated polymer? [2005] (a) Neoprene (b) Teflon (c) Thiokol (d) PVC

Buna \(-\mathrm{N}\) synthetic rubber is copolymer of: [2009] (a) \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\) and \(\mathrm{H}_{5} \mathrm{C}_{6}-\mathrm{CH}=\mathrm{CH}_{2}\) (b) \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CH}-\mathrm{CN}\) and \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\) (c) \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CH}-\mathrm{CN}\) and C=CC(=C)C C=CC(=C)Cl (d) \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CH}-\mathrm{C}=\mathrm{CH}_{2}\) and \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)

The polymer containing strong intermolecular forces e.g., hydrogen bonding is (a) Teflon (b) nylon 6,6 (c) polystyrene (d) natural rubber

The species which can best serve as an initiator for the cationic polymerization is [2012] (a) \(\mathrm{AlCl}_{3}\) (b) \(\mathrm{HNO}_{3}\) (c) \(\mathrm{Li} \mathrm{AlH}_{4}\) (d) BuLi

Which polymer is used in the manufacture of paints and lacquers? [2017] (a) Bakelite (b) Glyptal (c) Polypropene (d) Poly vinyl chloride

Which of the following statements about low density polythene is false? [2016] (a) It is poor conductor of electricity (b) Its synthesis requires oxygen or a Peroxide indicator as a Catalyst (c) Its synthesis requires high Pressure (d) It is used in the manufacture of buckets, dustbins etc.