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प्रश्न
Bauxite has the composition
पर्याय
\[\ce{Al2O3}\]
\[\ce{Al2O3.{n}H2O}\]
\[\ce{Fe2O3.2H2O}\]
None of these
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उत्तर
\[\ce{Al2O3.{n}H2O}\]
APPEARS IN
संबंधित प्रश्न
Write the names and chemical formulae of any one ore of iron.
In the extraction of Al, impure Al2O3 is dissolved in conc. NaOH to form sodium aluminate and leaving impurities behind. What is the name of this process?
Differentiate between “minerals” and “ores”.
Draw a neat, well labelled diagram of electrolytic cell for extraction of aluminium
Copper has the face centred cubic structure. The coordination number of each ion is:
How will you convert the following:
[Ag(CN)2]− to Ag
Which among the following statement is correct?
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.
Identify a mineral for the major source of boron from the following list?
Calamine and Malachite, respectively, are the ores of ______.
