Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyWhat is the appropriate process for the extraction of lead from low-grade ore (impurity level is high)?
- A$g$ $\rightarrow b$ $\rightarrow d$ $\rightarrow e$
- B$a$ $\rightarrow c$ $\rightarrow d$
- C$a$ $\rightarrow c$ $\rightarrow e$
- D$a$ $\rightarrow c$ $\rightarrow f$
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Similar Questions
The electrochemical extraction of aluminum from bauxite ore involves:
What is Thomas slag?
Easy
View SolutionThe 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 SolutionRefractory materials are generally used in furnaces because
Easy
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
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