Gutta percha rubber is_________________?

A. Soft & tacky at room temperature
B. An isomer of natural rubber
C. A thermosetting resin
D. Recovered by coagulation of rubber latex

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

The only natural thermoplastic resin, which is a product of animal life is ____________________?

A. Rosin
B. Shellac
C. Amber
D. Copal

Nylon-66 is a polyamide of __________________?

A. Hexamethylene diamine and adipic acid
B. Adipic acid and methyl amine
C. Vinyl chloride and formaldehyde
D. None of these

Commercial production of polypropylene employs _____________ polymerisation?

A. Emulsion
B. Suspension
C. Solution
D. Bulk

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

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

Nylon-6 is a_________________?

A. Polyamide
B. Thermosetting resin
C. Polyester
D. None of these

Adipic acid is an intermediate in the manufacture of _____________________?

A. Perspex
B. Nylon-66
C. Polystyrene
D. Bakelite

Styrene butadiene rubber is commercially manufactured by__________________?

A. Bulk polymerisation
B. Suspension polymerisation
C. Solution polymerisation
D. Emulsion polymerisation