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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 701. |
Write the name and structural formula of the polymer used in making of non-stick cookwares. |
| Answer» Teflon : `[--F_2C-CF_2--]_n` | |
| 702. |
Write the name and structural formula of the polymer used in making of non-stick cookwares.A. PVCB. teflonC. rayonD. isoprene |
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Answer» Correct Answer - B Teflon (polytetrafluoroethylene) is a polymer of tetrafluoroethylene and is used for non-stick utensils coating . `CF_(2)=CF_(2) overset("Polymerisation")to [--CF_(2)-CF_(2)--]_(n)` |
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| 703. |
The biodegradable polymer belonging to polymamide group is-A. dextronB. nylon-2-nylon-6C. nylon-6,6D. PHBV |
| Answer» Correct Answer - B | |
| 704. |
Neoprene is the polymer ofA. vinyl chlorideB. chloropreneC. butadieneD. propene |
| Answer» Correct Answer - B | |
| 705. |
Monomer of Teflon is-A. FCIC = CCIFB. `Cl_2C=C Cl_2`C. `F_2C=CF_2`D. `FCIC=CF_2` |
| Answer» Correct Answer - C | |
| 706. |
Relation belween number of average molecular mass `(overline(M)_(n))` and weight of average molecular mass `(overline(M)_(w))` of synthetid polymers isA. `overline(M)_(n) lt overline(M)_(w)`B. `overline(M)_(n) gt overline(M)_(w)`C. `overline(M)_(n)overline(M)_(w)`D. `overline(M)_(n)gt M_(w)` |
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Answer» Correct Answer - A Polydispersity index (PDI) of polymer=`overline(M)_(w)/overline(M)_(n)` For natural polymers, PDI = 1, i.e. `overline(M)_(w) = overline(M)_(n)` For synthetic polymers PDI = 1, i.e. `overline(M)_(w) gt overline(M)_(n)` |
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| 707. |
Which of the following structures represents neoprene polymers?A. B. C. D. |
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Answer» Correct Answer - B Neoprene, a synthetic polymer, is a homopolymer of chloroprene: `underset("Chloroprene")(nH_(2)C=underset(CI)underset(|)(C)-CH=)CH_(2)overset("Polymerization")rarr[underset("Neoprene")(CH_(2)-underset(CI)underset(|)(C)=CH-)CH_(2)]_(n)` |
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| 708. |
Structure of some important polymers are given. Which one represents Buna-S?A. `(-CH_(2)-overset(CH_(3))overset(|)C=CH-CH_(2)-)_(n)`B. `(-CH_(2)-CH=CH-CH_(2)-underset(C_(6)H_(5))underset(|)(CH)-CH_(2)-)_(n)`C. `(-CH_(2)-CH=CH-CH_(2)-underset(CN)underset(|)(CH)-CH_(2)-)_(n)`D. `(-CH_(2)-overset(Cl)overset(|)C=CH-CH_(2)-)_(n)` |
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Answer» Correct Answer - B |
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| 709. |
Natural rubber isA. all trans-polyisopreneB. chloropreneC. buna-SD. all cis-polyisoprene |
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Answer» Correct Answer - D |
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| 710. |
Which one of the following structures represents the neoprene polymer?A. `(-CH_(2)-underset(Cl)underset(|)C=CH-CH_(2)-)_(n)`B. `(-CH_(2)-underset(CN)underset(|)(CH)-)_(n)`C. `(-CH_(2)-underset(Cl)underset(|)(CH)-)_(n)`D. `(-underset(C_(6)H_(5))underset(|)(CH)-CH_(2)-)_(n)` |
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Answer» Correct Answer - A |
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| 711. |
Which of the following structures represents neoprene polymers?A. `-"("CH_(2)-underset(Cl)underset(|)C=CH-CH_(2)-")"_(n)`B. `-"("CH_(2)-overset(CN)overset(|)CH-")"_(n)`C. `-"("CH_(2)-overset(Cl)overset(|)CH-")"_(n)`D. `-"("underset(C_(6)H_(5))underset(|)(CH)-CH_(2)-")"_(n)` |
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Answer» Correct Answer - A Neoprene (synthetic rubber) is a polymer of chloroprne , i.e. 2-chloro-1,3-butadiene. `nH_(2)C=underset(("chloroprene"))underset("2-chloro-1,3 butadiene")underset(Cl)underset(|)(C)-underset(H)underset(|)C=CH_(2)overset("Polymerisation")to` `-[CH_(2)-underset(("synthetic rubber"))underset("Neoprene")underset(Cl)underset(|)(C)=underset(H)underset(|)C-H_(2)-]_(n)` |
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| 712. |
Which of the following structures represents neoprene polymer?A. `[--CH_(2)-overset(CN)overset(|)(C)H--]_(n)`B. `[-CH_(2)-overset(Cl) overset(|)C=CH-CH_(2)--]_(n)`C. `[--CH_(2)-overset(Cl)overset(|)(C)H--]_(n)`D. `[--overset(C_(6)H_(5))overset(|)(CH)-CH_(2)--]_(n)` |
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Answer» Correct Answer - B Neoprene polymer is `[--CH_(2)-overset(Cl)overset(|)(C)=CH-CH_(2)--]_(n)` |
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| 713. |
In which of the following polymers , empirical formula resembles with monomer ?A. BakeliteB. teflonC. nylon-66D. Dacron |
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Answer» Correct Answer - B In addition homopolymers such as teflon , empirical formula resembles with monomer . |
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| 714. |
Name the monomer and chemical formula of protein. |
| Answer» Amino acid `(H_2N-undersetunderset(R ) | CH-COOH)` | |
| 715. |
Name the monomers of novolac |
| Answer» Phenol and formaldehyde | |
| 716. |
STATEMENT-1 : Celuloso is a natural polymer STATEMENT-2 : Amylose is a natural polymer STATEMENT-3 : Polyethene is a nalural polymerA. TTFB. TFTC. FFTD. TTT |
| Answer» Correct Answer - A | |
| 717. |
Which of the following in not a condensation polymer?A. Nylon-66B. PTFEC. DacronD. Glyptal |
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Answer» Correct Answer - B |
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| 718. |
Which of the following features is true about low density polythene ?A. Highly branched structureB. ToughC. Poor conductor of electricityD. All of the above |
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Answer» Correct Answer - D LDP has highly branched structure , is chemically inert , tough and a bad conductor of electricity . |
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| 719. |
Low density polythene is prepared byA. free radical polymerisationB. cationic polymerisationC. anionic polymerisationD. Ziegler-Natta polymerisation |
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Answer» Correct Answer - A Ethene on free radical polymerisation gives low density polythene . |
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| 720. |
Name the monomers used in the preparation of glyptal |
| Answer» Phthalic anhydride and glycerol | |
| 721. |
The monomer unit of polyethene is:A. `CF_(2) = CF_(2)`B. `CH_(2) = CH_(2)`C. `CH_(2) = CHCl`D. `CH_(2)=CHCN` |
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Answer» Correct Answer - B |
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| 722. |
Nylon-66 is not a:A. Condensation polymerB. polyamideC. homopolymerD. copolymer |
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Answer» Correct Answer - C Homopolymer . |
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| 723. |
What is natural rubber ?A. cis -1 4-polyuisopreneB. Trans-1,-4 -polyisopreneC. neopreneD. Butyl rubber |
| Answer» Correct Answer - A | |
| 724. |
In the addition polymerisation, the molecules of the different monomers add together to form aA. chain-growth polymerB. HomopolymerC. copolymerD. (a), (b) and (c) |
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Answer» Correct Answer - C When the molecules of the different monomers add together in the addition polymerisation , they form a copolymer . |
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| 725. |
Natural rubber is:A. PolyisopreneB. Polyvinyl chlorideC. PolychloropreneD. Polyfluoroethylene |
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Answer» Correct Answer - A |
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| 726. |
Which of the following statement is wrongA. PVC stands for polyvinyl chlorideB. PTFE stand for teflonC. Buna -N stand for natural rubberD. PAN stands for polyacrylonitrile |
| Answer» Correct Answer - C | |
| 727. |
....A... is used as substitute for wool in the making of commercial fibres . Here , A refers toA. PolyacrylonitrileB. teflonC. bakeliteD. HDP |
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Answer» Correct Answer - A Polyacrylonitrile is used as a substitute for wool in the making of commercial fibre. |
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| 728. |
The main point of difference between buna-N and buna-S isA. the former is homopolymer whereas the later is copolymerB. former contains buta-1,3-diene but later does notC. former contains acrylonitrile but later containsD. All of the above |
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Answer» Correct Answer - C Buna-N and buna-S both are synthetic rubber and copolymers. The difference lies in their composition . Buna-N constituents are buta-1,3-diene and acrylonitrile. Buna-S constituents are buta-1, 3-diene and styrene . |
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| 729. |
Which of the following is chian growth polymer ?A. Nylon -26B. PVCC. Nylon -66D. Nylon -6 |
| Answer» Correct Answer - B | |
| 730. |
Which one is a synthetic polymer?A. StarchB. SilkC. proteinD. Neoprene |
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Answer» Correct Answer - D |
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| 731. |
The polymer which undergoes environment degradation by microorganism is known asA. chain growth polymerB. chain step polymerC. biodegradable polymerD. non- biodegradable polymer |
| Answer» Correct Answer - C | |
| 732. |
Which of the following is a natural polymer?A. BakeliteB. CelluloseC. PVCD. Nylon |
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Answer» Correct Answer - B |
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| 733. |
Which of the following is a biodegradable polymer?A. celluloseB. PolytheneC. Polyvinyl chlorideD. Nylon-6 |
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Answer» Correct Answer - A Cellulose in a biodegradable polymer . |
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| 734. |
Nylon-66 is obtained from:A. adipic acid and hexamethylene diamineB. phenol and formaldehydeC. terephthalic acid and ethylene glycolD. sebacic acid and hexamethylene |
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Answer» Correct Answer - A Nylon-6,6 is obtained by condensation copolymerisation of adipic acid and hexamethylene diamine . |
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| 735. |
Cis isoprene is used for makingA. poly propeneB. PVCC. Butyl rubberD. dacron |
| Answer» Correct Answer - C | |
| 736. |
Which of the following is correct examples of condensation polymers-A. nylon, Buna-SB. teflon, Buna-NC. nylon 6,6, dacronD. neoprene, Buna-S |
| Answer» Correct Answer - C | |
| 737. |
Glyptal polymer is obtained from glycerol on reacting with:A. malonic acidB. phthalic acidC. maleric acidD. acetic acid |
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Answer» Correct Answer - B |
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| 738. |
Nylon 2 ,6 is prepared fromA. glycine and `epsilon` caprolactumB. glycine and hexamethylene diamineC. glycine and 3 -hydroxybutanoic acidD. glycine and `omega` -amino caproic acid |
| Answer» Correct Answer - D | |
| 739. |
Dextron isA. polyesterB. PolyamideC. polycelluloseD. polypropylene |
| Answer» Correct Answer - A | |
| 740. |
Which of the following in not biodegradable polymer ?A. DextronB. polyetheneC. PVCD. Nylon -6 |
| Answer» Correct Answer - A | |
| 741. |
Which of the following polymer is biodegradable ?A. `(--CH_(2)-underset(Cl) underset(|)(C)=CH-CH_(2)--)_(n)`B. `(--CH_(2)-CH=CH-CH_(2)-CH_(2)-overset(CN)overset(|)(C)H--)_(n)`C. `(--O-underset(CH_(3))underset(|)(C)H-CH_(2)-underset(O)underset(||)(C)-O-underset(CH_(2)CH_(3)) underset(|)(C)H-CH_(2)-underset(O)underset(||)(C)--)_(n)`D. `[--overset(H)overset(|)N-(CH_(2))_(6)-overset(H)overset(|)N-overset(O)overset(||)(C)-(CH_(2))_(4)-overset(O)overset(|)(C)--]_(n)` |
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Answer» Correct Answer - D `[--overset(H)overset(|)N-(CH_(2))_(6)-overset(H)overset(|)N-overset(O)overset(||)(C)-(CH_(2))_(4)-overset(O)overset(|)(C)--]_(n)` is a biodegradable polymer . |
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| 742. |
Isoprene is-A. 3-methyl-1,2-butadieneB. 2-methyl-1,3-butadieneC. 3-chloro-1,2-butadieneD. 2-chloro-1,3-butadiene |
| Answer» Correct Answer - B | |
| 743. |
Nylon-66 is obtained from:A. Hexamethylene diamine and adipic acidB. Phenol and formaldehydeC. Propylene and adipic acidD. Adipic acid and phthalic acid |
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Answer» Correct Answer - A |
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| 744. |
Regarding cross-linked or network polymers, which of the following statements is incorrect?A. They contain covalent bonds between various linear polymer chainsB. They are formed from bi-and tri-functional monomersC. Examples are bakelite and melamineD. They contain strong covalent bonds in their polymer chains |
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Answer» Correct Answer - D It is incorrect satement. Cross linked polymers contain strong covalent bonds between the various linear chains |
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| 745. |
Which of the following is dextron ,A. `[-CH_2-overset(O)overset(||)C-]_n`B. `[-O -underset(CH_3)underset(|)CH-COO-CH_2-CO-]_n`C. `[-overset(O)overset(||)C-NH-(CH_2)_5-]_n`D. `[CH_2-overset(Cl)overset(|) CH-]_n` |
| Answer» Correct Answer - B | |
| 746. |
Which of the following is not biodegradable polymer ?A. Polyhydroxy butyrate -co-`beta` -hydroxy valerateB. polyglycolic acidC. Nylon -2,6D. Nylon -6,6 |
| Answer» Correct Answer - D | |
| 747. |
Glyptal is a polymer ofA. ethylene glycolB. ethylene glycol and phthalic acidC. ethylene glycol and adipic acidD. caprolactum |
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Answer» Correct Answer - B |
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| 748. |
What is the similarity between buna-N and PHBV ?A. Both are copolymersB. Both are biodegradableC. Both have one same monomeric unitD. Peroxide catalyst is used in their preparation . |
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Answer» Correct Answer - A Both Buna-N and PHBV are compolymers. |
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| 749. |
PHBV is prepared fromA. glycolic acidB. 3 -hydroxy butanoic acid and 3-hydroxy pentanoic acidC. glycine and `omega` amino caproic acidD. glycine and 3 -hydroxy butanoic acid |
| Answer» Correct Answer - B | |
| 750. |
PHBV stands forA. Poly `beta`-hydroxybutyrate valerateB. Poly -hydroxybutyrate valerateC. Poly `beta`-hydroxy butyrate-co-`beta`-hydroxyvalerateD. Poly `alpha`-hydroxy butyrate-co-`beta`-hydroxyvalerate |
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Answer» Correct Answer - C PHBV stand fro poly-`beta`-hydroxybutyrate co`-beta`-hydroxyvalerate. It is a biodegradable polymer. |
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