Easy
Aluminium has a great affinity for oxygen and its oxidation is an exothermic process. This fact is made use of in
- APreparing thin foils of aluminium
- BMaking utensils
- CPreparing duralumin alloy
- DThermite welding
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Mark the wrong statement.
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View SolutionThe best quality of steel is manufactured by which of the following processes?
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View SolutionExplain the Hall-Heroult process.
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View Solution$I$. $FeCr_2O_4 + NaOH + \text{air} \rightarrow (A) + Fe_2O_3$
$II$. $(A) + (B) \rightarrow Na_2Cr_2O_7$
$III$. $Na_2Cr_2O_7 + X \xrightarrow{\Delta} Cr_2O_3$
$IV$. $Cr_2O_3 + Y \xrightarrow{\Delta} Cr$
High temperature $(> 1000 \ ^\circ C)$ electrolytic reduction is necessary for isolating:
$II$. $(A) + (B) \rightarrow Na_2Cr_2O_7$
$III$. $Na_2Cr_2O_7 + X \xrightarrow{\Delta} Cr_2O_3$
$IV$. $Cr_2O_3 + Y \xrightarrow{\Delta} Cr$
High temperature $(> 1000 \ ^\circ C)$ electrolytic reduction is necessary for isolating:
The Ellingham diagram represents a plot of:
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