Easy
In the cyanide process involving extraction of silver,zinc is used industrially as an
- AOxidising agent
- BReducing agent
- CSolvent
- DSolvating agent
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Similar Questions
Match the extraction processes listed in Column $I$ with metals listed in Column $II$:
Column $I$ Column $II$ $A$. Self reduction $P$. Lead $B$. Carbon reduction $Q$. Silver $C$. Complex formation and displacement by metal $R$. Copper $D$. Decomposition of iodide $S$. Boron
| Column $I$ | Column $II$ |
| $A$. Self reduction | $P$. Lead |
| $B$. Carbon reduction | $Q$. Silver |
| $C$. Complex formation and displacement by metal | $R$. Copper |
| $D$. Decomposition of iodide | $S$. Boron |
Which statement is incorrect regarding the Hall-Heroult process for the metallurgy of aluminium?
$1$. Use of $Na_3AlF_6$ lowers the melting point of $Al_2O_3$.
$2$. Steel vessel with a lining of carbon acts as the cathode.
$3$. Graphite is used as the anode.
$4$. Carbon dioxide gas is generated at the cathode.
$1$. Use of $Na_3AlF_6$ lowers the melting point of $Al_2O_3$.
$2$. Steel vessel with a lining of carbon acts as the cathode.
$3$. Graphite is used as the anode.
$4$. Carbon dioxide gas is generated at the cathode.
Carbon and $CO$ gas are used to reduce which of the following pairs of metal oxides for the extraction of metals?
Which metal is added to recover $Au$ from $[Au(CN)_2]^-$?
Medium
View SolutionThe reduction of an oxide by aluminium is called:
Difficult
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