Class X Which of the following metals is present in the anode mud during the electrolytic refining of copper? Sodium Aluminium Gold Iron An element reacts with oxygen to give a compound with a high melting point. The compound is soluble in water. The element is likely to be calcium carbon iron silicon Which among the following alloys contain non-metal as one of its constituents? Brass Amalgam Gun metal None of these The bronze medals are made up of Cu and Zn Zn and Ni Cu and Sn Cu, Zn, Tn Silver articles becomes black on prolonged exposure to air. This is due to the formation of Ag2O Ag2S AgCN Ag2O and Ag2S Do you really want to submit this quiz? Cancel Submit Quiz
