Chapter Questions
Polymer formation from monomers starts by:(a) Condensation reaction between monomers(b) Coordination reaction between monomers(c) Conversion of monomer to monomer ions by protons(d) Hydrolysis of monomers
On the basis of mode of formation, polymers can be classified:(a) As addition polymers only(b) As condensation polymers only(c) As co-polymers(d) Both addition and condensation polymers
Which of the following is a chain growth polymer?(a) Proteins(b) Starch(c) Nucleic acid(d) Polystyrene
The repeating units of PTFE are:(a) $\mathrm{F}_{2} \mathrm{C}=\mathrm{CF}_{2}$(b) $\mathrm{FCl} \mathrm{C}=\mathrm{CF}_{2}$(c) $\mathrm{F}_{3} \mathrm{C}-\mathrm{CF}_{3}$(d) $\mathrm{Cl}_{2} \mathrm{CH}-\mathrm{CH}_{3}$
Low density polythene is prepared by:(a) Free radical polymerization(b) Cationic polymerization(c) Anionic polymerization(d) Ziegler-Natta polymerization
Which among the following is a synthetic polymer?(a) Phenol-formaldehyde resin(b) Proteins(c) Polysaccharides(d) Natural rubber
The abbreviation PDI refers to:(a) Poly diagonal index(b) Application of polymer(c) Name of the polymer(d) Poly dispersity index of polymer
Which pair of species given below produce bakelite?(a) Phenol, methanol(b) Phenol, $\mathrm{NaOH}$(c) Phenol, urea(d) Phenol, formaldehyde
Treatment of rubber with sulphur is:(a) Annealing(b) Vulcanization(c) Quenching(d) None of these
Teflon, styrene and neoprene are all:(a) Monomers(b) Co-polymers(c) Homopolymers(d) Condensation polymers
Which of the following contains isoprene units?(a) Natural rubber(b) Nylon-6,6(c) Polyethylene(d) Dacron
PVC as obtained after polymerization is:(a) Soft and pliable(b) Hard, brittle and transparent(c) Hard and infuseable(d) None of these
Which of the following polymers does not involve cross linkages?(a) Melmac(b) Bakelite(c) Polythene(d) Vulcanized rubber
The compound used in the manufacture of terylene is:(a) Ethylene(b) Vinyl chloride(c) Ethylene glycol(d) Adipic acid
The best way to prepare polyisobutylene is:(a) Coordination polymerization(b) Free radical polymerization(c) Cationic polymerization(d) Anionic polymerization
In the preparation of PTFE, the catalyst used is:(a) $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CO}\right)_{2} \mathrm{O}_{2}$(b) $\mathrm{FeSO}_{A}$(c) $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{~S}_{2} \mathrm{O}_{8}$(d) Both A and C
Which of the following is not made of polyamides?(a) Nylon(b) Natural silk(c) Wool(d) Artificial silk
Which of the following are Biodegradable polymers?(a) Nylon-2, Nylon-6 (b) Dextron(c) PHBV(d) All of these
Which of the following is a fully fluorinated polymer?(a) Neoprene(b) Teflon(c) Thiokol(d) PVC
PVC is formed by polymerization of:(a) 1 -chloroethene(b) Ethane(c) Propene(d) 1-chloropropane
Synthetic polymer prepared from caprolactum is known as:(a) Teflon(b) Nylon-6(c) Nylon-6, 10(d) Terylene
Which one of the following is not an example of chain growth polymer?(a) Neoprene(b) Buna-S(c) PMMA(d) Glyptal
Urethane is:
Nylon threads are made of:(a) Polyester polymer(b) Polyamide polymer(c) Polyvinyl polymer(d) Polyethylene polymer
Glyptal polymer is obtained from glycerol by reacting with:(a) Malonic acid(b) Phthalic acid(c) Maleic acid(d) Acetic acid
Synthetic human hair wigs are made from a co-polymer of vinylchloride and acrylonitrile and is called:(a) Poly Vinyl Chloride(b) Cellulose(c) Poly Vinyl cyanide(d) Dynel
Soft drinks and baby feeding bottles are generally made up of:(a) Polyamide(b) Polystyrene(c) Polyester(d) Polyurea
A polymer of ethylene chloride and sodium poly sulphide is:(a) Thiokol(b) Melamine(c) Glyptal(d) Perlon $\mathrm{L}$
Plexiglas (PMMA) is a polymer of:(a) Methyl methacrylate(b) Methyl acrylate(c) Acrylic acid(d) None of these
Dimethyl phthalate and ethylene glycol react to form:(a) Nylon-6(b) Nylon-6,6(c) Dacron(d) Neoprene
Which of the following is not an example of addition polymer?(a) Polystyrene(b) Nylon(c) PVC(d) Propylene
Latex can be coagulated with:(a) $\mathrm{CH}_{3} \mathrm{COOH}$(b) $\mathrm{H}_{2} \mathrm{O}$(c) $\mathrm{CH}_{3} \mathrm{OH}$(d) All of these
Which is used for the formation of nylon-6, $6 ?$(a) Phthalic acid(b) Sulphurous acid(c) Sulphur hexafluoride(d) Adipic acid
Which of the following is a polyamide?(a) Teflon(b) Nylon $-6,6$(c) Terylene(d) Bakelite
Ziegler-Natta catalyst is:(a) $\mathrm{K}\left[\mathrm{PtCl}_{3}\left(\mathrm{C}_{2} \mathrm{H}_{4}\right)\right]$(b) $\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{RhCl}$(c) $\mathrm{Al}_{2}\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{6}+\mathrm{TiCl}_{4}$(d) $\mathrm{Fe}\left(\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$
Synthetic human hair wigs are made from a copolymerof vinyl chloride and acrylonitrile and is called:(a) Dynel(b) Cellulose(c) PVC(d) Polyacrylonitrile
Ebonite is:(a) Natural rubber(b) Synthetic rubber(c) Highly vulcanized rubber(d) Polypropene
Nylon- $-6,10$ is a polymer of:(a) Caprolactam(b) Hexamethylene and sebacic acid(c) Hexamethylene and adipic acid(d) None of these
Which is not a macromolecule?(a) DNA(b) Starch(c) Palmitate(d) Insulin
The monomer unit of polyvinyl chloride has the formula:(a) $\mathrm{CH}_{3}-\mathrm{CH}_{2} \mathrm{Cl}$(b) $\mathrm{CH}_{2}=\mathrm{CH}_{2}$(c) $\mathrm{CHCl}=\mathrm{CHCl}$(d) $\mathrm{CH}_{2}=\mathrm{CHCl}$
Teflon is a polymer of:(a) Tetrafluorethylene(b) Tetraiodoethylene(c) Tetrabromoethylene(d) Tetrachloroethylene
The turbidity of a polymer solution measures:(a) Light transmitted by the solution(b) Light scattered by the solution(c) A light absorbed by solution(d) None of these
If $\mathrm{N}_{1}, \mathrm{~N}_{2}, \mathrm{~N}_{3} \ldots \mathrm{N}_{\mathrm{i}}$ are the number of molecules withmolecular masses $\mathrm{M}_{1}, \mathrm{M}_{2}, \mathrm{M}_{3} \ldots \mathrm{M}_{\mathrm{i}}$ respectively, thenthe number average molecular mass $\left(\underline{\mathrm{M}}_{\mathrm{w}}\right)$ is given by:(a) $\frac{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}^{2}}{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}}$(b) $\frac{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}}{\sum \mathrm{N}_{\mathrm{i}}}$(c) $\frac{\sum M_{i}^{2}}{\sum N_{i}}$(d) $\frac{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}}{\sum \mathrm{M}_{\mathrm{i}}}$
Orlon has a unit of:(a) Glycol(b) Isoprene(c) Vinyl cyanide(d) Acrolein
Which of the following is a biodegradable polymer?(a) Cellulose(b) Nylon-6(c) Polythene(d) Polyvinyl chloride
The substance used to harden the rubber for tyre manufacture is:(a) $\mathrm{CaC}_{2}$(b) Wax(c) Carbon black(d) 1,3 -butadiene
Which of the following is not correct regarding terylen?(a) Synthetic fibre(b) Thermosetting plastic(c) Step-growth polymer(d) Condensation polymer
Perlon is another name of:(a) Nylon-6, 10(b) Nylon-44(c) Nylon-6, 6(d) Nylon-6
Cellulose is a condensation polymer of:(a) $\alpha$ -galactose(b) $\alpha$ -glucose(c) $\beta$ -glucose(d) $\beta$ -galactose
What $\%$ of ' $^{\prime} \mathrm{S}$ ' is used in the Vulcanization of Rubber?(a) $5 \%$(b) $25 \%$(c) $30 \%$(d) $55 \%$
Toluene di-isocyanate is used to prepare:(a) Polyamides(b) Polyurethanes(c) Polycarbonates(d) Polyesters
Which of the following is an elastomer?(a) Dacron(b) Melamine(c) Vulcanized rubber(d) Polystyrene
Natural silk is a:(a) Polychloroprene(b) Polypeptide(c) Polyacrylonitrile(d) Polysaccharide
Synthetic rubber (neoprene) is:(a) Polyamide(b) Polyester(c) Poly halodiene(d) Polysaccharide
A polymer of prop-2-ene nitrile is called:(a) Tetron(b) Saran(c) Orlon(d) Dacron
Which one of the following pairs of monomers is used in the manufacture of 'Dacron'?(a) Acrylonitrile and vinyl acetate(b) Tetephthalic acid and ethylene glycol(c) Phthalic acid and ethylene glycol(d) Adipic acid and hexamethylene diamine
Which can be used as monomer in a polymerization reaction?(a) $\mathrm{C}_{2} \mathrm{H}_{4}$(b) $\mathrm{C}_{2} \mathrm{H}_{6}$(c) $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{Cl}$(d) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Cl}$
Consider the following sequence of reactions. $\mathrm{HC} \equiv \mathrm{CH} \stackrel{(1) \mathrm{CuCl}, \mathrm{NH}_{\mathrm{A}} \mathrm{Cl},(2) \mathrm{HCl}}{\longrightarrow}(\mathrm{X})$$\stackrel{\text { Polymerization }}{\longrightarrow}(\mathrm{Y})$The polymer (Y) is:(a) PVC(b) Saran(c) Neoprene(d) Chloroprene
Which of the following is biodegradable polymer of polyamide class?(a) Dextran(b) Nylon-2-Nylon-6(c) Nylon-6, 6(d) PHBV
Which of the following is chemical name of 'melamine"?(a) $1,3,5$ -triamino- $2,4,6$ -triazine(b) $2,4,6$ -triamino- $1,3,5$ -triazine(c) 2 -amino- $1,3,5$ -triazine(d) 2,4 -diamino $-1,3,5$ -triazine
Which of the following is not correctly matched here? Polymer Structure
Peroxide initiated polymerizations occur via:(a) Hydrocarbon combustion(b) Natural process synthesis(c) Isomeric saponification(d) Free radical chain propagation
Which of the following statement is incorrect?(1) Vinyon is a copolymer of vinyl chloride and vinyl acetate(2) Saran is a copolymer of vinyl chloride and vinylidene chloride(3) Butyl rubber in a copolymer of isobutylene and isoprene(a) 1 and 2(b) 2 only(c) 1 only(d) None is incorrect
Which of the following can be remelted time and again without producing any change?(a) Bakelite(b) Urea formaldehyde resin(c) PVC(d) Melamine formaldehyde resin
Which is not a polymer?(a) Sucrose(b) Enzyme(c) Starch(d) Teflon
Which one of the following pairs is not correctly matched?(a) Teflon: Thermally stable cross linked polymer of phenol and formaldehyde(b) Synthetic rubber: A copolymer of butadiene and styrene(c) Terylene: Condensation polymer of terephthalic acid and ethylene glycol(d) Perspex: A homopolymer of methyl methacrylate
In a polymer sample $30 \%$ of molecules have a molecular mass $20,000,40 \%$ have 30,000 and the rest $60,000 .$ What is the weight average molecular mass of the polymer?(a) 40,300(b) 30,600(c) 43,333(d) 50,400
Which of the following are correct here?(1) ABS plastic(2) Contains three monomers(3) A polymer of acrylonitrile, butadiene and styrene(a) 1 and 2(b) 3 only(c) 2 only(d) 1,2 and 3
Polymer used in bullet proof glass is:(a) PMMA(b) Lexan(c) Nomex(d) Kevlar
Which of the following statement is correct?(a) Vinyon is a copolymer of vinyl chloride and vinyl acetate(b) Saran is a copolymer or vinyl chloride and vinylidene chloride(c) Butyl rubber in a copolymer of isobutylene and isoprene(d) All are correct
Which reagent is used for converting propylene to polypropylene?(a) $\mathrm{TiCl}_{3}+\mathrm{K} / \mathrm{THF}$(b) $\mathrm{TiCl}_{3}+\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{4} \mathrm{~Pb}$(c) $\mathrm{TiCl}_{3}+\left(\mathrm{CH}_{3}\right)_{2} \mathrm{Mg}$(d) $\mathrm{TiCl}_{3}+\mathrm{CH}_{3}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{Li}$
The $\%$ of sulphur in Ebonite is:(a) $10-15 \%$(b) $15-20 \%$(c) $5-10 \%$(d) $20-30 \%$
Which of the following polymer can be used for lubrication and as an insulator?(a) SBR(b) PVC(c) PTFE(d) PAN
Polyacrylonitrile, characterized by the:<smiles>N#CN</smiles>0$-\mathrm{CH}_{2} \mathrm{CH}$ - repeating unit is made from which of the following monomer?(a) $\mathrm{CH}_{2}=\mathrm{CHCN}$(b) $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CN}$(c) $\mathrm{HOCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$(d) $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CHCN}$
Caprolactam a starting material for the manufacture of nylon 6 , is prepared by sulphuric acid catalysed reaction of:
The monomer used for the manufacture of PVC is obtained by the addition of:(a) $\mathrm{Cl}_{2}$ to ethylene(b) $\mathrm{Cl}_{2}$ to acetylene(c) $\mathrm{HCl}$ to ethylene(d) HCl to acetylene in presence of $\mathrm{Hg}^{2+}$ salts
Which of the following are condensation polymers?(1) PAN(2) Neoprene(3) Polystyrene(4) Poly (ethylene terephthalate)(a) 1 and 4 only(b) 3 and 4 only(c) 2 and 3 only(d) 4 only
The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000 . The poly dispersity index of the polymer is:(a) $<1$(b) $>1$(c) 1(d) 0
Polymerization using Zeigler-Natta catalysis is advantageous over free radical polymerization because:(a) It gives highly branched polymer with a high degree of crystallinity(b) It gives linear polymer molecules permitting stereochemical control(c) It can lead to living polymers via anionic polymerization(d) It permits step reaction polymerization resulting in a highly cross linked polymer
Which of these polymer has the weakest intermolecular force of attraction?(a) Nylon(b) P.V.C(c) Natural Rubber(d) Cellulose
Bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an example of:(a) Free radical reaction(b) Aromatic nucleophilic substitution (c) Aromatic electrophilic substitution(d) Aldol reaction
Which is are correct about PMMA here?(1) It is called plexiglass.(2) It is hard and transparent.(3) For it is formation peroxide is used.(4) It is co-polymer.(a) 1,2(b) 2,3(c) $1,2,3$(d) $1,2,3,4$
Which is true about polymers?(1) Polymers have low molecular weight(2) Polymers have high viscosity(3) Polymers scatter light(4) Polymers do not carry any charge(a) 1,2 and 3(b) 1,2 and 4(c) 2,3 and 4(d) 1,3 and 4
Which of these polymers involve crons linkages?(1) Bakelite(2) Polythene(3) Melmac(4) Vulcanized Rubber(a) $1,3,4$(b) 2 only(c) 3,4(d) 1,4
Which of the following statements is correct about polymers?(1) Polymers are substances made up of recurring structural units, each of which can be regarded as derived from a specific compound called a monomer(2) Polymers made from a single monomeric species are called homopolymers, whereas, those made up of two or more different monomeric species are called copolymers.(3) Very often, polymers are macromolecules, and a sample of a given polymer is characteristically a mixture of molecules with different molecular weights(a) 1 and 2 only(b) 1 and 3 only(c) 1,2 and 3(d) 2 only
Which is correct about Gutta parcha rubber?(1) A very hard material(2) A synthetic polymer(3) A trans 1,4 -polyisoprene polymer(a) 2 only(b) 3 only(c) 1 and 3 only(d) 1,2 and 3
Match the following: List 11. Coordination polymerization2. Free radical polymerization3. Addition polymerization4. Natural rubber List 2(1) Polypeptide(2) Nylon-6, 6(3) Zeigler-Natta(4) Azobis isobutyronitrile(5) cis-1,4-polyisoprene
Which of the following statements about polymers is correct?(1) The ratio of the weight average and number average molecular masses, $\overline{\mathrm{M}}_{\mathrm{w}} / \overline{\mathrm{M}}_{\mathrm{a}}$, is called poly dispersion index (P.D.I.) (2) The number average molecular mass, $\overline{\mathrm{M}}_{\mathrm{w}}$ and the weight average molecular mass $\overline{\mathrm{M}}_{\mathrm{w}}$ are expressed by the equations$$\overline{\mathrm{M}}_{\mathrm{w}}=\frac{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}}{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}} \text { and } \overline{\mathrm{M}}_{\mathrm{w}}=\frac{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}^{2}}{\sum \mathrm{N}_{\mathrm{i}} \mathrm{M}_{\mathrm{i}}}$$Here, $\mathrm{N}_{\mathrm{i}}$ is the number of molecules of molecular mass $\mathrm{M}_{\mathrm{i}}$ of the species $\mathrm{i}$.(3) Some physical properties such as freezing point, vapour pressure and osmotic pressure are related directly to $\mathrm{M}$ whereas some other physical properties like light scattering, sedimentation and diffusion constant are related directly to $\mathrm{M}_{w^{*}}$(a) 1 and 2(b) 2 and 3(c) 1 and 3(d) 1,2 and 3
Match the following: List 1 (Polymer)1. Bakelite2. Dacron3. Nylon-664. Buna-S List 2 (Polymerizing units)(1) Butadiene and styrene(2) Phenol and methanal(3) 1,2 -dihydrooxyethane and dimethyl terephthalate(4) Urea and methanal(5) 1,6 -hexanedioic acid and 1 , 6 -diamino hexane
What is the order of decreasing reactivity of the following monomers towards anionic polymerization?(1) $\mathrm{CH}_{2}=\mathrm{CHCN}$(2) $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}_{2}$(3) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}=\mathrm{CH}_{2}$(a) $1>2>3$(b) $3>2>1$(c) $2>3>1$(d) $3>1>2$
Match the following:List $\mathbf{1}$1. Phenol + formaldehyde2. Terephthalic acid $+$ ethylene glycol3. Caprolactam4. Butadiene $+$ styrene List 2(1) Synthetic rubber(2) Bakelite(3) Nylon-66(4) Terylene
The product $(\mathrm{Y})$ is:
A sample of a polymer has 200 molecules of molar mass 1000 each, 300 molecules of molar mass 10,000 each and 500 molecules of molarmass 1,00000 . The weight average molecular mass of this polymer is?(a) 55394(b) 49553(c) 94553(d) 35594
Poly ethylene glycol is formed as a result of:(a) Free Radical Polymerisation of Epoxides(b) Cationic polymerisation of Epoxides(c) Anionic polymerisation of Epoxides(d) Can be any of these
Which is/are correct about Kevlar here?(1) It is a polyamide(2) It is used in making bullet proof vests etc(3) It is homopolymer formed by addition reaction(4) It is polymer of Terephthalic acid and 1,4 diamino benzene.(a) $1,2,3$(b) $1,2,4$(c) $2,3,4$(d) $1,2,3,4$
Which is/are correct about Spandex?(1) It is a Polyurethane(2) It is a flexible Polymer(3) It is a Polymer of Toluene 2,6 diisocyanate and glycol(4) It is a Polymer of Ammonium carbonate(a) $1,2,3$(b) $2,3,4$(c) $1,2,4$(d) $1,2,3,4$
Sarona is:(a) Polymer of Propane 1,3 diol and Terephathalic acid(b) It is a natural polymer(c) It is a biodegradable polymer(d) All of these