Chemistry Arsenic oxides are removed by passing through_________________? Options:A. Ferric hydroxideB. Sodium hydroxideC. Calcium hydroxideD. Aluminium hydroxideView AnswerA. Ferric hydroxide Continue Reading Previous: By which method the molecular mass of benzene was determined as 78.108 ?Next: Water gas heated at 450?C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce________________?