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Polymers Test - 2

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Polymers Test - 2
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Weekly Quiz Competition
  • Question 1
    4 / -1

    For macromolecules to form, one more of the following criteria are essential

    Solution

    Macromolecule is made by joining smaller molecules(monomers)by covalent bond formation.

  • Question 2
    4 / -1

    One of the statements below is not true for the classification of polymers can be classified on the basis of their

    Solution

    Polymer cannot be classified on the basis of their resistance to different agents.

  • Question 3
    4 / -1

    Identify the type of polymer. —A—B—B—A—A—A—B—A—

    Solution

    This is copolymer is polymer made up of different monomers.

  • Question 4
    4 / -1

    Which of the following polymers have tetrafluoroethene monomer units?

    Solution

    Teflon has CF2=CF2 as monomer unit.

  • Question 5
    4 / -1

    Cellulose acetate (rayon) and cellulose nitrate are __________ polymers

    Solution

    It is semi synthetic polymer.

  • Question 6
    4 / -1

    One of the following rubbers is used in making oil seals, tank lining, etc.

    Solution

    Buna N is used in making oil seals , tank linings.

  • Question 7
    4 / -1

    Which of the following polymer can be formed by using the monomer unit represented below?

    Solution

    Nylon – 6, 6 Caprolactum is monomer of nylon 6.

  • Question 8
    4 / -1

    Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?

    Solution

    Since we are getting monosubstituted alkyl halide so it is neopentane.

  • Question 9
    4 / -1

    Polythene is not one of the following?

    Solution

    Polymer is not semi synthetic. It is synthetic.

  • Question 10
    4 / -1

    Melamine is

    Solution

  • Question 11
    4 / -1

    Nylon – 2 – Nylon – 6 is

    Solution

    They both are biodegradable polymer.

  • Question 12
    4 / -1

    Which of the following statements about low density polythene is FALSE?

    Solution

    Low density polythene : It is obtained by the polymerisation of ethene under high presure of 1000-2000 atm. at a temp. of 350 K to 570 K in the pressure of traces of dioxygen or a peroxide initiator (cont). Low density polythene is chemically inert and poor conductor of electricity. It is used for manufacture squeeze bottles. toys and flexible pipes.

  • Question 13
    4 / -1

    One of the following is used in speciality packaging, orthopaedic devices and in controlled release of drugs.

    Solution

    PHBV [Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)] find its applications in controlled release of drugs, medical implants and repairs, speciality packaging, orthopaedic devices and manufacturing bottles for consumer goods.

  • Question 14
    4 / -1

    Formation of Buna – S, involves polymerization of

    Solution

    Buna S involves the polymerization of 1, 3 butadiene and styrene.

  • Question 15
    4 / -1

    In the following reaction, the polymer formed is ?

    Solution

    These monomers form PHBV.

  • Question 16
    4 / -1

    Dacron is manufactured by heating a mixture of ethylene glycol and terephthalic acid with one of the Conditions given below.

    Solution

    Dacron is manufactured by heating a mixture of ethylene glycol and terephthalic acid at 420 to 460K in presence of SnO3 as catalyst.

  • Question 17
    4 / -1

    Painting material among the following is

    Solution

    Painting material is Gyptal.

  • Question 18
    4 / -1

    Which one of the following is not a condensation polymer?

    Solution

    The correct answer is Option B.
    Neoprene is not a condensation polymer. It is an additional polymer.
    Neoprene is made from monomer chloroprene (2-chlorobuta-1,3-diene). 
    Dacron, Melamine and Glyptal are condensation polymers.
    Dacron ( also known as terylene) is a polyester made by condensation polymerisation of ethylene glycol and dimethyl terephthalate.
    Glyptal is a copolymer of ethylene glycol and phthalic acid.
    Melamine ( or formaldehyde melamine polymer) is obtained from condensation polymerisation of melamine with formaldehyde.

  • Question 19
    4 / -1

    The below molecule is called?

    Solution

    This polymer is polyvinylchloride.

  • Question 20
    4 / -1

    In vulcanisarion of rubber,

    Solution

    In vulcanization of rubber sulphur crosslinking is introduced.

  • Question 21
    4 / -1

    Bakelite is used for making

    Solution

    Bakelite is used in making electrical switches.

  • Question 22
    4 / -1

    The correct name of the polymer below is: 

    Solution

    The correct answer is Option B.
    Novolac
    -> Linear structure formed as a product of condensation reaction between phenol and formaldehyde with excess of phenol.
    -> It is used in paints

  • Question 23
    4 / -1

    Rubber tree is found in

    Solution

    Rubber tree is found in India.

  • Question 24
    4 / -1

     

    Which of the following monomers form biodegradable polymers?

     

    Solution

     

     

    Poly-β−hydroxybutyrate co-β− valerate (PHBV). It is obtained by the copolymerization of 3−hydroxybutyric acid and 3−hydroxypentanoic acid. PHBV is used in specially packaging orthopedic devices and in controlled release of drugs. PHBV undergoes bacterial degradation in the environment.

     

     

  • Question 25
    4 / -1

    Which polymers occur naturally in nature

    Solution

    Starch and cellulose occur naturally.

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