Give reasons for the following: (i) Gold and silver are used for jewellery making. (ii) carbonate and sulphide ores are usually converted into oxides prior to reduction during the process of extraction.
i) Gold and silver are used for jewellery making because these are lustrous (shiny) metals. ii) Carbonate and sulphide ores are usually converted into oxides prior to reduction during the process of extraction because oxides are easy to reduce than carbonates and sulphides.
