Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
MediumThe 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
- A$I, III, IV, V$
- B$I, III, IV, VII$
- C$I, III, IV, V, VII$
- D$I, II, IV, V, VII$
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Similar Questions
One of the constituents of German silver is:
Match List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Concentration of gold ore $I$. Aniline $B$. Leaching of alumina $II$. $NaOH$ $C$. Froth stabiliser $III$. $SO_2$ $D$. Blister copper $IV$. $NaCN$
Choose the correct answer from the options given below.
| List-$I$ | List-$II$ |
|---|---|
| $A$. Concentration of gold ore | $I$. Aniline |
| $B$. Leaching of alumina | $II$. $NaOH$ |
| $C$. Froth stabiliser | $III$. $SO_2$ |
| $D$. Blister copper | $IV$. $NaCN$ |
Choose the correct answer from the options given below.
List-$I$ shows reactions involved in the metallurgy of $Pb$ (lead) and List-$II$ shows the names of the processes. Match List-$I$ with List-$II$ and select the correct code for your answer.
List-$I$ List-$II$ $(P) \ PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ $(1) \ \text{Smelting}$ $(Q) \ PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ $(2) \ \text{Self reduction}$ $(R) \ PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ $(3) \ \text{Calcination}$ $(S) \ PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ $(4) \ \text{Roasting}$
| List-$I$ | List-$II$ |
| $(P) \ PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ | $(1) \ \text{Smelting}$ |
| $(Q) \ PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ | $(2) \ \text{Self reduction}$ |
| $(R) \ PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ | $(3) \ \text{Calcination}$ |
| $(S) \ PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ | $(4) \ \text{Roasting}$ |
Medium
View SolutionThe percentage of silver in 'German silver' is:
Easy
View SolutionWhich of the following changes involve more than two metallurgical processes?
Medium
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