logo

CuriousTab

CuriousTab

Discussion


Home Chemical Engineering Polymer Technology Comments

  • Question
  • Molecular weights of plastics ranges from


  • Options
  • A. 1000 to 5000
  • B. 5000 to 1000
  • C. 20000 to 25000
  • D. 109 to l011

  • Correct Answer
  • 20000 to 25000 


  • Polymer Technology problems


    Search Results


    • 1. __________ polymer is used for making unbreakable crockery.

    • Options
    • A. Thermoplastic
    • B. Melamine
    • C. Addition
    • D. none of these
    • Discuss
    • 2. Thermosetting polymers as compared to thermoplastic polymers

    • Options
    • A. are formed by addition polymerisation.
    • B. have three dimensional structure.
    • C. have linear structure.
    • D. none of these.
    • Discuss
    • 3. Identify the group in which all the polymers mentioned can be used to make fibres.

    • Options
    • A. Butadiene copolymers, Polyamides, Urea aldehyde
    • B. Cellulose derivatives, Polyisoprene, Polyethylene
    • C. Cellulose derivatives, Polyamides, Polyurathane
    • D. Polypropylene, Poly vinyl chloride, Silicon
    • Discuss
    • 4. Thermal pyrolysis of ethylene dichloride produces

    • Options
    • A. trichlorethylene
    • B. vinyl chloride
    • C. ethanol amine
    • D. ethylene oxide
    • Discuss
    • 5. Non sulphonated hard bakelites are not used for making

    • Options
    • A. ion-exchange resins
    • B. fountain pen barrels
    • C. formica table tops
    • D. combs
    • Discuss
    • 6. A copolymer of vinyl and vinylidine chloride is called

    • Options
    • A. treylene
    • B. orlon
    • C. saran
    • D. dacron
    • Discuss
    • 7. In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.

    • Options
    • A. polythene
    • B. PVC
    • C. rayon
    • D. polyvinyl acetate
    • Discuss
    • 8. Benzoyl chloride is not used as a catalyst in the manufacture of

    • Options
    • A. polystyrene
    • B. polyvinyl acetate
    • C. polypropylene
    • D. polyvinyl chloride-co-vinylacetate
    • Discuss
    • 9. Polythene is a/an

    • Options
    • A. addition polymerisation product.
    • B. condensation polymerisation product.
    • C. thermosetting material.
    • D. none of these.
    • Discuss
    • 10. Teflon is

    • Options
    • A. phenol formaldehyde
    • B. an inorganic polymer
    • C. polytetra florouethylene (PTFE)
    • D. a monomer
    • Discuss


    Comments

    There are no comments.

Enter a new Comment