Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
DifficultThe molar mass of the water-insoluble product formed from the fusion of chromite ore $(FeCr_2O_4)$ with $Na_2CO_3$ in the presence of $O_2$ is $..........$ $g \ mol^{-1}$.
- A$260$
- B$160$
- C$360$
- D$460$
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Similar Questions
German silver does not contain
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 SolutionThe important advantage$(s)$ of Lintz and Donawitz $(L.D.)$ process for the manufacture of steel is (are):
Metals 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
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
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