Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
MediumIdentify the products of the reaction: $4FeCr_2O_4 + 8Na_2CO_3 + 7O_2 \rightarrow ?$
- A$Na_2CrO_4 + Fe_3O_4 + CO_2$
- B$Na_2CrO_4 + Fe_2O_3 + CO_2$
- C$Na_2Cr_2O_7 + Fe_2O_3 + CO_2$
- D$Na_2Cr_2O_7 + Fe_2O_3 + CO$
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Similar Questions
Which of the following alloys is used for ultra-high speed flight?
The process of the extraction of copper from copper pyrites involves:-
$(I)$ Froth floatation $(II)$ Calcination $(III)$ Roasting $(IV)$ Self reduction $(V)$ Smelting $(VI)$ Liquation $(VII)$ Electrorefining
$(I)$ Froth floatation $(II)$ Calcination $(III)$ Roasting $(IV)$ Self reduction $(V)$ Smelting $(VI)$ Liquation $(VII)$ Electrorefining
Medium
View SolutionMatch Column-$I$ with Column-$II$.
Column-$I$ Column-$II$ $P$. Nitriding $I$. Process of heating steel to redness and then cooling it very slowly $Q$. Annealing $II$. Process of heating steel in presence of $NH_3$ and producing hard coating of Iron Nitride on the surface of steel $R$. Tempering $III$. Process of heating steel to redness and then cooling it suddenly by plunging it into water or oil $S$. Quenching $IV$. Process of heating quenched steel to a temperature well below redness and then cooling it slowly
| Column-$I$ | Column-$II$ |
|---|---|
| $P$. Nitriding | $I$. Process of heating steel to redness and then cooling it very slowly |
| $Q$. Annealing | $II$. Process of heating steel in presence of $NH_3$ and producing hard coating of Iron Nitride on the surface of steel |
| $R$. Tempering | $III$. Process of heating steel to redness and then cooling it suddenly by plunging it into water or oil |
| $S$. Quenching | $IV$. Process of heating quenched steel to a temperature well below redness and then cooling it slowly |
Difficult
View SolutionMatch List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Bronze $I$. $Cu, Ni$ $B$. Brass $II$. $Fe, Cr, Ni, C$ $C$. $UK$ silver coin $III$. $Cu, Zn$ $D$. Stainless Steel $IV$. $Cu, Sn$
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $A$. Bronze | $I$. $Cu, Ni$ |
| $B$. Brass | $II$. $Fe, Cr, Ni, C$ |
| $C$. $UK$ silver coin | $III$. $Cu, Zn$ |
| $D$. Stainless Steel | $IV$. $Cu, Sn$ |
Match the following processes in List-$I$ with their respective applications in List-$II$:
List-$I$ List-$II$ $A$. Van Arkel method $P$. Purification of titanium $B$. Solvay process $Q$. Manufacture of $Na_2CO_3$ $C$. Bassemerisation $S$. Reduction of copper $D$. Hall-Herault process $R$. Reduction of aluminium
| List-$I$ | List-$II$ |
| $A$. Van Arkel method | $P$. Purification of titanium |
| $B$. Solvay process | $Q$. Manufacture of $Na_2CO_3$ |
| $C$. Bassemerisation | $S$. Reduction of copper |
| $D$. Hall-Herault process | $R$. Reduction of aluminium |
Medium
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