321070
Consider the following isolation/purification processes.
(I) Heating impure metal with \(\mathrm{I_{2}}\) at 150 \(\mathrm{200^{\circ} \mathrm{C}}\) and passing the resulting volatile iodide on hot tungsten filament at \(\mathrm{1400^{\circ} \mathrm{C}}\) to get the pure metal.
(II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide to get the metal.
(III) Electrolysis of the molten electrolyte containing metal oxide and cryolite or fluorspar to obtain the metal.
The processes used for obtaining aluminium, titanium and lead are respectively:
321072
Match the columns I with column II and mark the appropriate choice
Column I
Column II
A
\(\mathrm{\begin{array}{l}\mathrm{Fe}_{2} \mathrm{O}_{3} \cdot \mathrm{xH}_{2} \mathrm{O}(\mathrm{s}) \stackrel{\Delta}{\longrightarrow} \\\mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+\mathrm{xH}_{2} \mathrm{O}(\mathrm{g})\end{array}}\)
P
\({\text{Slag formation }}\)
B
\(\mathrm{\mathrm{FeO}+\mathrm{SiO}_{2} \rightarrow \mathrm{FeSiO}_{3}}\)
Q
\(\mathrm{\begin{array}{l}\text { Reduction of } \\\text { iron oxide }\end{array}}\)
C
\(\mathrm{\begin{array}{l}\text { Discharge gas } \\\text { produced during this } \\\text { process is utilised in } \\\text { manufacture of } \\\mathrm{H}_{2} \mathrm{SO}_{4}\end{array}}\)
R
\({\text{Calcination}}\)
D
\({\text{F}}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}}{\text{ + 3C}} \to {\text{2Fe + 3CO}}\)
S
\({\text{Roasting}}\)
321070
Consider the following isolation/purification processes.
(I) Heating impure metal with \(\mathrm{I_{2}}\) at 150 \(\mathrm{200^{\circ} \mathrm{C}}\) and passing the resulting volatile iodide on hot tungsten filament at \(\mathrm{1400^{\circ} \mathrm{C}}\) to get the pure metal.
(II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide to get the metal.
(III) Electrolysis of the molten electrolyte containing metal oxide and cryolite or fluorspar to obtain the metal.
The processes used for obtaining aluminium, titanium and lead are respectively:
321072
Match the columns I with column II and mark the appropriate choice
Column I
Column II
A
\(\mathrm{\begin{array}{l}\mathrm{Fe}_{2} \mathrm{O}_{3} \cdot \mathrm{xH}_{2} \mathrm{O}(\mathrm{s}) \stackrel{\Delta}{\longrightarrow} \\\mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+\mathrm{xH}_{2} \mathrm{O}(\mathrm{g})\end{array}}\)
P
\({\text{Slag formation }}\)
B
\(\mathrm{\mathrm{FeO}+\mathrm{SiO}_{2} \rightarrow \mathrm{FeSiO}_{3}}\)
Q
\(\mathrm{\begin{array}{l}\text { Reduction of } \\\text { iron oxide }\end{array}}\)
C
\(\mathrm{\begin{array}{l}\text { Discharge gas } \\\text { produced during this } \\\text { process is utilised in } \\\text { manufacture of } \\\mathrm{H}_{2} \mathrm{SO}_{4}\end{array}}\)
R
\({\text{Calcination}}\)
D
\({\text{F}}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}}{\text{ + 3C}} \to {\text{2Fe + 3CO}}\)
S
\({\text{Roasting}}\)
321070
Consider the following isolation/purification processes.
(I) Heating impure metal with \(\mathrm{I_{2}}\) at 150 \(\mathrm{200^{\circ} \mathrm{C}}\) and passing the resulting volatile iodide on hot tungsten filament at \(\mathrm{1400^{\circ} \mathrm{C}}\) to get the pure metal.
(II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide to get the metal.
(III) Electrolysis of the molten electrolyte containing metal oxide and cryolite or fluorspar to obtain the metal.
The processes used for obtaining aluminium, titanium and lead are respectively:
321072
Match the columns I with column II and mark the appropriate choice
Column I
Column II
A
\(\mathrm{\begin{array}{l}\mathrm{Fe}_{2} \mathrm{O}_{3} \cdot \mathrm{xH}_{2} \mathrm{O}(\mathrm{s}) \stackrel{\Delta}{\longrightarrow} \\\mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+\mathrm{xH}_{2} \mathrm{O}(\mathrm{g})\end{array}}\)
P
\({\text{Slag formation }}\)
B
\(\mathrm{\mathrm{FeO}+\mathrm{SiO}_{2} \rightarrow \mathrm{FeSiO}_{3}}\)
Q
\(\mathrm{\begin{array}{l}\text { Reduction of } \\\text { iron oxide }\end{array}}\)
C
\(\mathrm{\begin{array}{l}\text { Discharge gas } \\\text { produced during this } \\\text { process is utilised in } \\\text { manufacture of } \\\mathrm{H}_{2} \mathrm{SO}_{4}\end{array}}\)
R
\({\text{Calcination}}\)
D
\({\text{F}}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}}{\text{ + 3C}} \to {\text{2Fe + 3CO}}\)
S
\({\text{Roasting}}\)
321070
Consider the following isolation/purification processes.
(I) Heating impure metal with \(\mathrm{I_{2}}\) at 150 \(\mathrm{200^{\circ} \mathrm{C}}\) and passing the resulting volatile iodide on hot tungsten filament at \(\mathrm{1400^{\circ} \mathrm{C}}\) to get the pure metal.
(II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide to get the metal.
(III) Electrolysis of the molten electrolyte containing metal oxide and cryolite or fluorspar to obtain the metal.
The processes used for obtaining aluminium, titanium and lead are respectively:
321072
Match the columns I with column II and mark the appropriate choice
Column I
Column II
A
\(\mathrm{\begin{array}{l}\mathrm{Fe}_{2} \mathrm{O}_{3} \cdot \mathrm{xH}_{2} \mathrm{O}(\mathrm{s}) \stackrel{\Delta}{\longrightarrow} \\\mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+\mathrm{xH}_{2} \mathrm{O}(\mathrm{g})\end{array}}\)
P
\({\text{Slag formation }}\)
B
\(\mathrm{\mathrm{FeO}+\mathrm{SiO}_{2} \rightarrow \mathrm{FeSiO}_{3}}\)
Q
\(\mathrm{\begin{array}{l}\text { Reduction of } \\\text { iron oxide }\end{array}}\)
C
\(\mathrm{\begin{array}{l}\text { Discharge gas } \\\text { produced during this } \\\text { process is utilised in } \\\text { manufacture of } \\\mathrm{H}_{2} \mathrm{SO}_{4}\end{array}}\)
R
\({\text{Calcination}}\)
D
\({\text{F}}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}}{\text{ + 3C}} \to {\text{2Fe + 3CO}}\)
S
\({\text{Roasting}}\)