Polystyrene supportedt-butyl chromate reagents were prepared using divinylbenzene as the crosslinking agent. The extent of crosslinking was varied from 2 to 20% (2, 5, 10, 15 and 20%). These polystyrene systems appeared to be amenable to structural variations for studying the effect of the nature and extent of crosslinking on the reactivity of the attached functional groups. Polystyrene supportedt-butyl chromates, having varying crosslink densities, were used to oxidise alcohols to the carbonyl compounds. Reagents prepared from 2% crosslinked resins gave better results. A regular decrease in the extent of functionalization was noticed as the degree of crosslinking was increased and the capacity of the functional group was found to be minimum for 20% crosslinked resin.