Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyWhich of the following is $NOT$ used for the extraction of $Al$?
- AVan Arkel method
- BContact process
- CBayer's process
- DHall-Heroult process
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Column-$I$ Column-$II$ $A$. Metal which occurs in the native state in nature is $P$. $Hg$ $B$. The oxide of metal that can be commercially reduced by Aluminothermic reduction process is $Q$. $Ti$ $C$. van Arkel method is used for preparing ultrapure metal of $R$. $Cr$ $D$. Auto reduction process is employed for the sulphide ore of $S$. $Ag$
| Column-$I$ | Column-$II$ |
| $A$. Metal which occurs in the native state in nature is | $P$. $Hg$ |
| $B$. The oxide of metal that can be commercially reduced by Aluminothermic reduction process is | $Q$. $Ti$ |
| $C$. van Arkel method is used for preparing ultrapure metal of | $R$. $Cr$ |
| $D$. Auto reduction process is employed for the sulphide ore of | $S$. $Ag$ |
Medium
View SolutionSteel contains
Easy
View SolutionMatch List-$I$ with List-$II$ and select the correct answer using the codes given below the lists.
List-$I$ List-$II$ $I$. Cyanide process $A$. Ultrapure $Ge$ $II$. Floatation process $B$. Pine oil $III$. Electrolytic reduction $C$. Extraction of $Al$ $IV$. Zone refining $D$. Extraction of $Au$
| List-$I$ | List-$II$ |
|---|---|
| $I$. Cyanide process | $A$. Ultrapure $Ge$ |
| $II$. Floatation process | $B$. Pine oil |
| $III$. Electrolytic reduction | $C$. Extraction of $Al$ |
| $IV$. Zone refining | $D$. Extraction of $Au$ |
MediumAIIMS 2013
View SolutionThe advantage$(s)$ of using $O_2$ rather than air in the steel industry is(are):
$(I)$ There is a faster conversion,so a given plant can produce more steel in a day.
$(II)$ Larger quantities can be handled.
$(III)$ It gives a purer product,and the surface is free from nitrides.
$(I)$ There is a faster conversion,so a given plant can produce more steel in a day.
$(II)$ Larger quantities can be handled.
$(III)$ It gives a purer product,and the surface is free from nitrides.
Medium
View SolutionMetals are extracted by other methods through the formation of complexes. The complexes formed in these methods are: $I$: Cyanide process,$II$: Mond process,$III$: Photographic fixing process.
Difficult
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