Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
MediumIdentify the reaction that does $NOT$ occur in a blast furnace.
- A$2Fe_2O_3 + 3C \rightarrow 4Fe + 3CO_2$
- B$CO_2 + C \rightarrow 2CO$
- C$CaCO_3 \rightarrow CaO + CO_2$
- D$CaO + SiO_2 \rightarrow CaSiO_3$
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Similar Questions
Percentage of silver in German silver is (in $\%$)
Correctly match the List-$I$ with List-$II$:
List-$I$ List-$II$ $(P) \ [M(CN)_2]^-$ $(1) \ Ni$ (during refining of metal) $(Q) \ [M(CO)_4]$ $(2) \ Ti$ (during refining of metal) $(R) \ MI_4$ $(3) \ Pb$ (during roasting of ore) $(S) \ MO$ $(4) \ Ag$ (during leaching of ore)
| List-$I$ | List-$II$ |
| $(P) \ [M(CN)_2]^-$ | $(1) \ Ni$ (during refining of metal) |
| $(Q) \ [M(CO)_4]$ | $(2) \ Ti$ (during refining of metal) |
| $(R) \ MI_4$ | $(3) \ Pb$ (during roasting of ore) |
| $(S) \ MO$ | $(4) \ Ag$ (during leaching of ore) |
Medium
View SolutionAmong the following compounds,the number of those present in copper matte is $......$
$A.$ $CuCO_3$
$B.$ $Cu_2S$
$C.$ $Cu_2O$
$D.$ $FeO$
$A.$ $CuCO_3$
$B.$ $Cu_2S$
$C.$ $Cu_2O$
$D.$ $FeO$
Which among the following statement$(s)$ is(are) true for the extraction of aluminium from bauxite?
$A$. Hydrated $Al_2O_3$ precipitates,when $CO_2$ is bubbled through a solution of sodium aluminate.
$B$. Addition of $Na_3AlF_6$ lowers the melting point of alumina.
$C$. $CO_2$ is evolved at the anode during electrolysis.
$D$. The cathode is a steel vessel with a lining of carbon.
$A$. Hydrated $Al_2O_3$ precipitates,when $CO_2$ is bubbled through a solution of sodium aluminate.
$B$. Addition of $Na_3AlF_6$ lowers the melting point of alumina.
$C$. $CO_2$ is evolved at the anode during electrolysis.
$D$. The cathode is a steel vessel with a lining of carbon.
DifficultIIT 2020
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
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