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Polymers Test - 33

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Polymers Test - 33
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Example of a biodegradable polymer pair is:
    Solution

  • Question 2
    1 / -0
    __________ is used for making parachutes and stockings.
    Solution
    Nylon is the strongest man-made fiber prepared by polymerizing amide molecules.
    Nylon is used in the making of different types of clothes, ropes, sleeping bags, parachutes, tents etc because the fiber of nylon is stronger than a steel wire of the same thickness.
  • Question 3
    1 / -0
    Sulphur is used for vulcanization of rubber to make it:
    Solution
    Sulphur is used for vulcanization of rubber to make it more strong, tough and elastic. Note: Natural rubber is soft, sticky and has less tensile strength.
  • Question 4
    1 / -0
    Nylon-6 is manufactured from which of the following?
    Solution
    Nylon-6 is manufactured from the monomer called caprolactum. The monomer caprolactum is heated at 533 K in an inert atmosphere, it polymerises to give nylon-6.

  • Question 5
    1 / -0
    A condensation polymer among the following polymers is:
    Solution
    Teflon, Polystrene, and PVC are addition polymers. while Dacron (also called Terylene) is a condensation polymer. Condensation polymer is defined as a polymer that is formed by the combination of two or more monomer units and the elimination of water takes place.
    In dacron, ethylene glycol and terephthalic acid reacts and removal of water molecule takes place,

    Hence, dacron is an example of condensation polymer.Hence, D is correct.
  • Question 6
    1 / -0
    The s-block element used as a catalyst in the manufacture of Buna-S rubber is :
    Solution
    The s-block element used as a catalyst in the manufacture of Buna-S rubber is sodium ($$Na$$) metal. Buna-S or styrene butadiene rubber (SBR) is a copolymer of styrene and 1,3-butadiene.
  • Question 7
    1 / -0
    Which of the following is not true?
    Solution
    Natural rubber has cis configuration at every double bond.
  • Question 8
    1 / -0
    Teflon constitutes:
    Solution
    Teflon is the brand name of Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene. The constituents of tetrafluoroethylene are carbon and fluorine formula is $$ (C_2F_4)_n$$. 

  • Question 9
    1 / -0
    Which one of the following is not a correct match?
    Solution
    Acrylonitrile $$(CH_2=CHCN)$$ is the monomer unit of orlon polymer.

  • Question 10
    1 / -0
    Bakelite is a _________.
    Solution
    Bakelite is phenol-formaldehyde resin. It is obtained by the condensation polymer of phenol and formaldehyde.

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