Answer:
Option C
Explanation:
Nomex is a flame-resistant polymer and it is used to manufacture clothes for firefighters.It is prepared by condensation of
m-phenylenediamine and isopthalamide monomers.
. Thiokol is obtained by the condensation co-polymerisation of ethylene dichloride and sodium tetrasulphide (Na2 S4). It is used as binder in solid rocket fuel.
. Kevlar is obtained by condensation co-polymerisation of terephthalic acid and 1,4- diaminobenzene.It is used for making bulletproof vests.
. Dynel is a copolymer of acrylonitrile and vinyl chloride monomers.It is used for making synthetic hair wigs.
