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Match List-I with List-II and select the correct answer by using the codes given below the list:   List-I (Name of Polymer)   List-II (Uses)  (a)  Polystyrene (i) For making combs and computer discs  (b) Polyvinyl Chloride (ii) As insulator, wrapping material and television cabinets  (c) Urea-formaldehyde resin  (iii) Manufacture of raincoats and vinyl flooring  (d) Bakelite (iv)  For making unbreakable cups and laminated sheets

Match List-I with List-II and select the correct answer by using the codes given below the list:   List-I (Name of Polymer)   List-II (Uses)  (a)  Polystyrene (i) For making combs and computer discs  (b) Polyvinyl Chloride (ii) As insulator, wrapping material and television cabinets  (c) Urea-formaldehyde resin  (iii) Manufacture of raincoats and vinyl flooring  (d) Bakelite (iv)  For making unbreakable cups and laminated sheets Correct Answer (a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)

Explanation:

  • Polystyrene (PS): It is a synthetic aromatic polymer made from the monomer styrene, which is a liquid petrochemical.
    • Polystyrene polymer is used in the Manufacture of toys, radio and television cabinets, wrapping material, etc. 
  • Polyvinyl chloride ((C2H3Cl)n):
    • PVC stands for Polyvinyl chloride.
    • It is widely used as a thermoplastic.
    • It is a synthetic polymer made from the polymerization of vinyl chloride.
    • It comes in two basic forms i.e rigid and flexible.
    • Because of its hardness, it is used in a variety of applications in building and construction, health care, automobiles, vinyl flooring etc.
  • Bakelite is a Polymer, made up of the monomer of Formaldehyde + Phenol.
    • Due to its excellent insulating properties, it is used for making switches.
    • High resistance to electricity and heat.
    • It is used in electrical insulators, radio and telephone casings, CDs and such diverse products as kitchenware, jewellery, pipe stems, children's toys, and firearms.
  • Urea-formaldehyde resin
    • Any of a class of synthetic resins obtained by chemical combination of urea (a solid crystal obtained from ammonia) and formaldehyde (a highly reactive gas obtained from methane).
    • Urea-formaldehyde resins are used mostly as adhesives for the bonding of plywood, particleboard, moulds, laminated sheets, unbreakable containers and other structured wood products.

Hence,

  • Polystyrene                      → As insulator, wrapping material and television cabinets.
  • Polyvinyl Chloride            → Manufacture of raincoats and vinyl flooring.
  • Urea-formaldehyde resin → For making unbreakable cups and laminated sheets.
  • Bakelite                            → For making combs and computer discs

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