MCQ
Primary amines react with nitrous acid to yield
- AInsoluble nitrite salts
- BYellow oily layer
- ✓Nitrogen gas
- DAzo dye
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[${\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{O}} =$ mass $- 18$ isotope of oxygen]


$1$. propanal
$2$. trichloroethanal
$3$. methanal
$4$. ethanal
$5$. benzaldehyde
