Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E. (poly chloro tetra fluoro ethylene). It is also called ________________?

Related Mcqs:

1. Poly-tetra-fluoro ethylene (PTFE) is known as_________________?

   A. Dacron
   B. Teflon
   C. Bakelite
   D. Celluloid

2. Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?

   A. PVC
   B. Bakelite
   C. PTFE
   D. Epoxy resin

3. Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800 ?

   A. 50000
   B. 51600
   C. 49200
   D. 50800

4. In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is________________?

   A. Terylene
   B. Polybutadiene
   C. PVC
   D. Polypropylene

5. Polymerisation of poly functional monomers produces polymers having_________________?

   A. Good mechanical strength
   B. Low viscosity
   C. Low melting point
   D. None of these

6. Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by _______________, which decompose to give free radicals?

   A. Organic peroxides
   B. Sulphuric acid
   C. Hydrofluoric acid
   D. None of these

7. Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is __________________?

   A. Nylon-66
   B. Teflon
   C. Polyester
   D. Bakelite

8. In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of__________________?

   A. Cross linked polystyrene
   B. Phenol formaldehyde resins
   C. Polyesters
   D. Polyamides

9. A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of_______________________?

   A. Siloxane elastomers
   B. Polyamides
   C. Vinyl polymers
   D. Urea-formaldehyde resins

10. Poly Vinyl chloride (PVC) is a ________________ material?

    A. Thermoplastic
    B. Thermosetting
    C. Fibrous
    D. Chemically active