Which of the following polymers is used to manufacture clothes for firefighters ?

Options

A. Thiokol
B. Kevlar
C. Nomex
D. Dynel

Answer

C

Explanation

Nomex is a flame - resistant polymer and it is used to manufacture clothes for fire fighters. It is prepared by condensation of m-phenylenediamine and isopthalamide monomers.
`*` Thiokol is obtained by the condensation copolymerisation of ethylene dichloride and sodium tetrasulphide `(Na_(2)S_(4))`. It is used as binder in solid rocket fuel.
`*` Kevlar is obtained by condensation copolymerisation of terephthalic acid and diaminobenzene. It is used for making bullet proof vests.
`*` Dynel is a copolymer of acrylonitrile and vinyl chloride monomers. it is used for making synthetic hair wigs.