MCQ
Aromatic compounds burn with sooty flame because
- AThey have a ring structure of carbon atoms
- BThey have a relatively high percentage of hydrogen
- ✓They have a relatively high percentage of carbon
- DThey resist reaction with oxygen of air
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$H - C\, \equiv CH\,\xrightarrow[{(ii)\,C{H_3}C{H_2}Br}]{{(i)\,NaN{H_2}\,/\,liq.\,N{H_3}}}\,X$
$\xrightarrow[{(ii)\,C{H_3}C{H_2}Br}]{{(i)\,NaN{H_2}\,/\,liq.\,N{H_3}}}\,Y$
$X$ and $Y$ are