Advertisements
Advertisements
Question
Bauxite has the composition
Options
\[\ce{Al2O3}\]
\[\ce{Al2O3.{n}H2O}\]
\[\ce{Fe2O3.2H2O}\]
None of these
Advertisements
Solution
\[\ce{Al2O3.{n}H2O}\]
APPEARS IN
RELATED QUESTIONS
Out of C and CO, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
What is the role of limestone in the extraction of iron from its oxides?
What is the role of coke in the extraction of iron from its oxides?
Indicate the principle behind the method used for the refining of zinc.
The chemical formula of willemite is __
(a) ZnS
(b) ZnCO3
(c) ZnO
(d) Zn2SiO4
A current liberates 0.50 g of hydrogen in 2 hours. The weight of copper (at. wt. = 63.5) deposited at the same time by the same current through copper sulphate solution is ______.
Carbonate ore of iron is ____________.
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
In the extraction of aluminium by Hall-Heroult process, purified \[\ce{Al2O3}\] is mixed with \[\ce{CaF2}\] to:
(i) lower the melting point of \[\ce{Al2O3}\].
(ii) increase the conductivity of molten mixture.
(iii) reduce \[\ce{Al^{3+}}\] into \[\ce{Al(s)}\].
(iv) acts as catalyst.
Write the chemical reactions involved in the extraction of gold by cyanide process. Also give the role of zinc in the extraction.
