Non sulphonated hard bakelites are not used for making _______________________?

Related Mcqs:

1. Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is_________________?

   A. Chloroethane
   B. Chloroprene
   C. Isoprene
   D. None of these

2. Which of the following polymers is used for making a non stick coating on frying pans ?

   A. Bakelite
   B. Teflon
   C. Perspex
   D. PVC

3. _______________________ is not a condensation polymer ?

   A. Teflon
   B. Nylon-66
   C. Dacron
   D. Polystyrene

4. ____________ polymer is used for making unbreakable crockery?

   A. Thermoplastic
   B. Melamine
   C. Addition
   D. None of these

5. Rexine (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten_______________?

   A. Teflon
   B. Bakelite
   C. SBR
   D. PVC

6. Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically_________________?

   A. Polymethyl methacrylate (PMMA)
   B. Polytetrafluroethylene (PTFE)
   C. Polycarbonates
   D. Phenolic resins

7. Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but____________________?

   A. Polyacrylonitrile
   B. Polyamide
   C. Saturated polyester
   D. Alkyd resin

8. Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?

   A. Is a synthetic polymer
   B. Does not stick to the wound unlike cotton
   C. Can absorb over 90% of its own weight of water
   D. Both B. and C.

9. Polystyrene is a light, transparent, thermoplastic material used for making __________________?

   A. Toys and combs
   B. Packaging bags
   C. Non-sticking utensils
   D. Electrical insulation

10. Neoprene is rendered non-inflammable, because of_____________________?

    A. Its cross-linked structure
    B. Its linear chain structure
    C. The presence of chlorine atoms in its monomer
    D. The absence of chlorine atoms in its monomer