A commercial ion-exchange resin is made from 88 wt% styrene and 12 wt% divinylbenzene. Estimate the maximum ion-exchange capacity in eq/kg resin (same as meq/g resin).

Explain the concept of extractive distillation for the separation of toluene and isooctane using suitable solvent  and support your answer with neat sketch

Which of the following statements about recrystallisation of metals are true? Select one or more: a. Recrystallisation leads to an enhanced plastic deformability b. Cold working can change the recrystallisation temperature C. It leads to the formation of cold-worked grains with high dislocation density d. It leads to the formation of new grains with no or few dislocations The recrystallisation temperature is equal to the melting temperature Recrystallisation leads to an increase in yield strength e. f.

Discuss the miscellaneous applications of polymers (coatings, adhesives, films and foams) and advanced polymeric materials (Ultra-High-Molecular-Weight Polyethylene, Liquid Crystal Polymers, and thermoplastic elastomers)