Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyMatch the items of List-$I$ with those of List-$II$ and choose the correct option given below.
List-$I$ List-$II$ $A$. Calcination $1$. Galena $B$. Roasting $2$. Magnetite $C$. Magnetic separation $3$. Pyrometallurgy $D$. Carbon reduction of metal oxide $4$. Malachite
| List-$I$ | List-$II$ |
| $A$. Calcination | $1$. Galena |
| $B$. Roasting | $2$. Magnetite |
| $C$. Magnetic separation | $3$. Pyrometallurgy |
| $D$. Carbon reduction of metal oxide | $4$. Malachite |
- A$A-4, B-1, C-3, D-2$
- B$A-4, B-1, C-2, D-3$
- C$A-2, B-4, C-3, D-2$
- D$A-3, B-2, C-1, D-4$
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Similar Questions
Match the following:
List-$I$ List-$II$ $A. Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$ $I. \text{Roasting}$ $B. Ni(CO)_4 \xrightarrow{230^{\circ}C} Ni + 4CO$ $II. \text{Calcination}$ $C. Fe_2O_3 \cdot 3H_2O \xrightarrow{\Delta} Fe_2O_3 + 3H_2O$ $III. \text{Vapour phase refining}$ $D. 2PbS + 3O_2 \rightarrow 2PbO + 2SO_2$ $IV. \text{Electrolysis}$ $V. \text{Leaching}$
The correct answer is:
| List-$I$ | List-$II$ |
| $A. Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$ | $I. \text{Roasting}$ |
| $B. Ni(CO)_4 \xrightarrow{230^{\circ}C} Ni + 4CO$ | $II. \text{Calcination}$ |
| $C. Fe_2O_3 \cdot 3H_2O \xrightarrow{\Delta} Fe_2O_3 + 3H_2O$ | $III. \text{Vapour phase refining}$ |
| $D. 2PbS + 3O_2 \rightarrow 2PbO + 2SO_2$ | $IV. \text{Electrolysis}$ |
| $V. \text{Leaching}$ |
The correct answer is:
Which of the following processes is $NOT$ involved in the extraction of metal from cassiterite $(SnO_2)$ ore?
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