Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
DifficultMatch List-$I$ with List-$II$ (Both having metallurgical terms):
List-$I$ List-$II$ $A$. Concentration of $Ag$ ore $I$. Reverberatory furnace $B$. Blast furnace $II$. Pig iron $C$. Blister copper $III$. Leaching with dilute $NaCN$ solution $D$. Froth floatation method $IV$. Sulfide ores
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
|---|---|
| $A$. Concentration of $Ag$ ore | $I$. Reverberatory furnace |
| $B$. Blast furnace | $II$. Pig iron |
| $C$. Blister copper | $III$. Leaching with dilute $NaCN$ solution |
| $D$. Froth floatation method | $IV$. Sulfide ores |
Choose the correct answer from the options given below:
- A$A-IV, B-III, C-II, D-I$
- B$A-IV, B-I, C-III, D-II$
- C$A-III, B-II, C-I, D-IV$
- D$A-III, B-IV, C-I, D-II$
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Select the incorrect statement.
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Concentrated sodium hydroxide can separate a mixture of
Medium
View SolutionThe correct statement$(s)$ related to processes involved in the extraction of metals is(are):
$(A)$ Roasting of Malachite produces Cuprite.
$(B)$ Calcination of Calamine produces Zincite.
$(C)$ Copper pyrites is heated with silica in a reverberatory furnace to remove iron.
$(D)$ Impure silver is treated with aqueous $KCN$ in the presence of oxygen followed by reduction with zinc metal.
$(A)$ Roasting of Malachite produces Cuprite.
$(B)$ Calcination of Calamine produces Zincite.
$(C)$ Copper pyrites is heated with silica in a reverberatory furnace to remove iron.
$(D)$ Impure silver is treated with aqueous $KCN$ in the presence of oxygen followed by reduction with zinc metal.
Which of the following statements is correct?
Medium
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