Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
DifficultSelect the correct matching:
- APyro metallurgy: Extraction of $Fe$
- BPyro metallurgy: Extraction of $Fe$
- CHydro metallurgy: Extraction of $Au$
- DAll above are correct
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Similar Questions
One of the constituents of German silver is:
By annealing,steel
Easy
View SolutionWhat is the approximate ratio of roasted ore,coke and limestone respectively in the charge to be added into the blast furnace for the extraction of iron?
In which of the following metals extraction,impurities are removed as slag?
$i.$ $Al$ $\quad$ $ii.$ $Fe$
$iii.$ $Cu$ $\quad$ $iv.$ $Zn$
The correct option is
$i.$ $Al$ $\quad$ $ii.$ $Fe$
$iii.$ $Cu$ $\quad$ $iv.$ $Zn$
The correct option is
Consider the following:
Statement-$I$ : In the extraction of $Al$ by Hall-Heroult process,pure $Al_2O_3$ mixed with $Na_3AlF_6$ lowers its melting point and increases conductivity.
Statement-$II$ : Zirconium metal is purified by zone refining method.
Statement-$I$ : In the extraction of $Al$ by Hall-Heroult process,pure $Al_2O_3$ mixed with $Na_3AlF_6$ lowers its melting point and increases conductivity.
Statement-$II$ : Zirconium metal is purified by zone refining method.
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