MCQ
The reaction in which $NaCN/C_2H_5OH/HOH$ is used is:
- APerkin reaction
- ✓Benzoin condensation
- CReimer-Tieman reaction
- DRosenmunds reduction
$2 C _6 H -5 CHO \stackrel{ KCN \text {, water, ehanol }}{\longrightarrow} C _6 H _5 CHOHCOC_{6 } \mathrm { H } _ { 5 }$
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$\text { A } \quad\quad\quad\quad\quad \text { B } \quad\quad\quad\text { C } \quad\quad\quad\quad\text { D }$
$1 \times 10^{-4} \quad 2 \times 10^{-4} \quad 0.1 \times 10^{-4} \quad 0.2 \times 10^{-4}$
(Where $E$ is the electromotive force)
Which of the above half cells would be preferred to be used as reference electrode?