Related Mcqs:

1. 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

2. 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

3. 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

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. Addition polymerisation is not involved in the manufacture of_______________?

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

6. Condensation polymerisation is not involved in the manufacture of_________________?

   A. Teflon
   B. Polythene
   C. Terylene
   D. Nylon

7. 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

8. 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

9. Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ______________ ° C?

   A. -20
   B. 50
   C. 250
   D. 500

10. Polycondensation reaction of polymerisation ___________________?

    A. Does not produce linear polymers
    B. Produces only thermoplastic material
    C. Produces epoxy polymers
    D. Does not need any catalyst