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  • Question
  • Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used


  • Options
  • A. for surface coating of automobiles & air crafts.
  • B. for fibre making.
  • C. as plasticiser for PVC & nitrocellulose.
  • D. for film forming materials.

  • Correct Answer
  • for fibre making. 


  • Polymer Technology problems


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    • 1. Vulcanisation of raw rubber makes it

    • Options
    • A. soft
    • B. less elastic
    • C. plastic
    • D. tacky
    • Discuss
    • 2. Amino resins are used in paper treatment to improve its

    • Options
    • A. wet tear and bursting strength.
    • B. folding endurance
    • C. wet rub resistance
    • D. all (a), (b) & (c)
    • Discuss
    • 3. Plastic articles are normally produced by __________ moulding.

    • Options
    • A. green sand
    • B. injection
    • C. shell
    • D. dry sand
    • Discuss
    • 4. Valcunisation of rubber decreases its

    • Options
    • A. tensile strength.
    • B. resistance to organic solvents.
    • C. tackiness.
    • D. working temperature range.
    • Discuss
    • 5. Alkyd resin can not be used for making

    • Options
    • A. plasticiser
    • B. paint & varnish
    • C. fibres
    • D. film forming materials
    • Discuss
    • 6. Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.

    • Options
    • A. epoxy
    • B. phenol formaldehyde
    • C. urea formaldehyde
    • D. melamine formaldehyde
    • Discuss
    • 7. Polypropylene compared to polythene is

    • Options
    • A. harder
    • B. stronger
    • C. lighter
    • D. all (a), (b) and (c)
    • Discuss
    • 8. Pick out the wrong statement.

    • Options
    • A. Cold SBR is superior as compared to hot SBR.
    • B. Polymerisation temperature can modify the properties of SBR.
    • C. Production of cold SBR employs lower pressure as compared to that of hot SBR.
    • D. None of these.
    • Discuss
    • 9. Pick out the wrong statement.

    • Options
    • A. Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre.
    • B. Crimp is a measure of the difference between the length of the straightened and unstraightend fibre.
    • C. Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning.
    • D. Nylon fibres have greater water absorption capacity than polyester fibres.
    • Discuss
    • 10. In case of a ball mill,

    • Options
    • A. coarse feed requires a larger ball.
    • B. fine feed requires a larger ball.
    • C. operating speed should be more than the critical speed.
    • D. none of these
    • Discuss


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