Related Mcqs:

1. Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the _____________ fibres?

   A. Acrylic
   B. Polyester
   C. Nylon 6:6
   D. Polypropylene

2. In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?

   A. Bakelite (phenol formaldehyde)
   B. Polyester
   C. Polythene
   D. Nylon-6

3. In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for _______________ fibres?

   A. Polythene
   B. PVC
   C. Rayon
   D. Polyvinyl acetate

4. _______________________ is not a condensation polymer ?

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

5. Which of the following is an inorganic polymer ?

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

6. Which of the following polymers does not belong to the class of Polyacrylate polymer ?

   A. PMMA
   B. Polyacrylonitrile
   C. Poly Ethyl acrylate
   D. None of these

7. Which of the following is a polymer of Hexamethylene diamine and adipic acid ?

   A. Nylon-6
   B. Nylon-66
   C. Nylon-6, 10
   D. Epoxy resin

8. In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer ?

   A. PTFE
   B. Buna-S
   C. PMMA
   D. Polycaprolactam

9. Which of the following low molecular weight (<104), soft & waxy polymer is used in „chewing gum‟ ?

   A. Cellulose acetate
   B. Polyvinyl acetate
   C. Thiokol
   D. PVC

10. Which of the following is not a polymer of two monomers ?

    A. Teflon
    B. Bakelite
    C. SBR
    D. None of these