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 Multiple Choice QuestionsMultiple Choice Questions

71.

Bakelite is the condensation polymer of

  • C6H5OH and caprolactum

  • HCHO and phthalic acid

  • C6H5OH and HCHO

  • HCHO and ethylene glycol


72.

Monomer of polymer 

  • 2-methylpropene

  • styrene

  • propene

  • ethene


73.

Bakelite is polymer of phenol and

  • HCOOH

  • HCOOCH3

  • HCHO

  • CH3COOH


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74.

Bisphenol and epichlorohydrin condensed in presence of NaOH forming

  • Resins

  • Rubber

  • Foam

  • Polyester


A.

Resins

Epoxy resins are obtained by copolymeristation of epichlorohydrin and bisphenol A. These resins have good adhesive strength.


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75.

Natural rubber is a polymer of monomer isoprene. During polymerisaton

  • 1, 4 addition takes place

  • 1, 2 addition takes place

  • 1,3 addition takes place

  • both double bonds are converted into single bond


76.

Select the correct statement

  • Orlon is an addition polymer

  • Dacron is an addition polymer

  • Orlon is a condensation polymer

  • The monomers of orlon is styrene


77.

Which of the following polymers can be used for lubrication and as an insulator?

  • SBR

  • PVC

  • PTFE

  • PAN


78.

Among the following which one is condensation polymer?

  • Orlon

  • Melamine

  • Teflon

  • PMMA


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79.

The hard plastic covers of telephones are made from polymers of

  • acrylonitrile

  • styrene

  • fluoromethane

  • phenol and formaldehyde


80.

Which one of the following monomers gives the polymer neoprene on polymerisation?

  • CH2=CH-Cl

  • CCl2=CCl2

  • CH2=CCl-CH=CH2

  • CF2=CF2


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