Chemistry Which one of following is not a property of pure quartz ? Options:A. Coloured solidB. BrittleC. HardD. All of aboveView AnswerA. Coloured solid 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________________?