Why is the formation of sulphate in calcination sometimes advantageous?
Sulphates are usually water soluble and the gangue remains insoluble. Therefore, the desired metal is leached away as soluble sulphate from insoluble gangue.
Titanium is a metal of modern times. It is obtained as oxide. Why it could not be extracted earlier despite its wide occurence?
Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?
What criterion is followed for the selection of the stationary phase in chromatography?
What is the role of cryolite in the metallurgy of aluminium?
Why is zinc not extracted from zinc oxide through reduction using CO?
What is the role of graphite rod in the electrometallurgy of aluminium?
Predict conditions under which Al might be expected to reduce MgO.
Define the term gangue or matrix.
Mock Test Series
