(a) Name an ore of zinc.
(b) Which process is applied to concentrate it?
(c) How is concentrated ore changed to oxide?
Name an ore of zinc other than zinc oxide. Also, name the process by which this ore can be converted into zinc oxide? [2 MARKS]
An ore is concentrated by froth flotation method. That concentrated ore will be converted to its oxide form by ___ process.
(a) Name the methods by which concentrated ore is converted to metallic oxide.
(b) State three objectives achieved during the roasting of ores.
Give the principles of:
(a) hydrolytic method, (b) froth floatation,
(c) electromagnetic separation.
Which metal can be extracted from each one of the following ores:
(a) bauxite (b) calamine (c) haematite.
Some metallic oxides can be reduced by hydrogen,carbon and carbon monoxide and some cannot.Explain.
Distinguish between :
(a) a mineral and an ore,
(b) an ore and a metallic compound.
Define the term 'metallurgy'. State the processes involved in metallurgy.