MCQ
Which compound gives yellow ppt. with iodine and alkali
- A$2-$ hydroxy ethane
- ✓Acetophenone
- CMethyl acetone
- DAcetamide

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$\frac{2}{3} Al_2 O_3 \rightarrow \frac{4}{3} Al + O_2$
$\Delta _rG = + 960\, kJ\, mol^{-1}$
The potential difference needed for the electrolytic reduction of aluminium oxide $(Al_2O_3)$ at $500^oC$ is at least ........ $V$.