Which from following polymers is used to prepare shoe soles?

Step-by-step solution

Buna-N is the correct choice due to its favorable properties for shoe sole manufacturing. As a copolymer of 1,3-butadiene and acrylonitrile, it offers high resistance to oils, fuels, and chemicals, alongside good abrasion resistance and elasticity. By contrast, polyacrylamide is employed in water treatment and electrophoresis, Perspex serves as a transparent glass substitute, and Glyptal functions as a resin in paints and varnishes—none possess the durability or chemical resistance required for shoe soles. Thus, Bu