MCQ
Acetaldehyde cannot give:
- AIodoform test
- ✓Lucas test
- CBenedict test
- DTollens test
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$Pt ( s )\left| H _2( s )( latm )\right| H ^{+}\left( aq ,\left[ H ^{+}\right]=1\right)|| Fe ^{3+}( aq ), Fe ^{2+}( aq ) \mid \operatorname{Pt}( s )$
Given : $E _{ Fe ^{3+} / e ^{2 *}}^0=0.771\,V$ and $E _{ H ^{+}+\frac{1}{2} H _2}^0=0 V , T =298\,K$
If the potential of the cell is $0.712\,V$ the ratio of concentration of $Fe ^{2+}$ to $Fe ^{2+}$ is $........$.(Nearest integer)
|
LIST $-I$ (Cell) |
LIST $-II$ (Use/Property/Reaction) |
|
$A$ Leclanche cell |
$I$ Converts energy of combustion into electrical energy |
| $B$ Ni-Cd cell | $II$ Does not involve any ion in solution and is used in hearing aids |
| $C$ Fuel cell | $III$ Rechargeable |
|
$D$ Mercury cell |
$IV$ Reaction at anode $\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+2 \mathrm{e}^{-}$ |
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