Question

(a) List two differences between calcination and roasting in tabular form.\n \n(b) Which method will you use to reduce the following ? Explain by giving a suitable example. (i) oxides of less reactive metals (ii) oxides of moderately reactive metals (iii) oxides of highly reactive metals

Answer 1

a) in calcination heating in done in the absence of air while CO2 is released in it
In roasting heating is done in the presence of air and SO2 is released