Zn
Fe
Ag
Ca
The metal that is used as a catalyst in the hydrogenation of oils is
The metal that is usually extracted from sea water is
The metal used to galvanise iron to protect it from rusting is
The metal used to recover copper from a solution of copper sulphate is
The metal which reacts most violently with with cold water is
The metallurgical process in which a metal is obtained in a fused state is called
The metals commonly used for electroplating are
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
The method that cannot be used for removing permanent hardness of water is
The mineral containing both magnesium and calcium is
