MCQ
The Hinsberg's method is used for
- APreparation of primary amines
- BPreparation of secondary amines
- CPreparation of tertiary amines
- ✓Separation of amine mixtures
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Reason : Conc. $HNO_3$ reacts with metal and first produces a metal nitrate and nascent hydrogen. The nascent hydrogen then further reduces $HNO_3$ to $NO_2$.
$2CrO_4^{2 - } + 2{H^ + } \to C{r_2}O_7^{2 - } + {H_2}O$