Related Mcqs:

1. 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

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. 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

4. 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

5. 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

6. 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

7. 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

8. Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces________________?

   A. Epoxy resin
   B. Polyamide
   C. Alkyd resin
   D. Phenolic resin

9. Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?

   A. 7 kgf/cm2 and 70 °C
   B. 1000 kgf/cm2 and 100°C
   C. 7 kgf/cm2 and 700°C
   D. 1 kgf/cm2 (gage) and 70°C

10. Addition polymerisation is not involved in the manufacture of_______________?

    A. Low density polythene
    B. Poly vinyl chloride
    C. Polystyrene
    D. Polyhexamethylene adipamide