Which one of the following gives sooty flame on combustion?

Which one of the following gives sooty flame on combustion?
  1. $\mathrm{C}_2 \mathrm{H}_4$
  2. $\mathrm{CH}_4$
  3. $\mathrm{C}_2 \mathrm{H}_6$
  4. $\mathrm{C}_6 \mathrm{H}_6$

Solution

Aromatic compounds, e.g., $\mathrm{C}_6 \mathrm{H}_6$ give sooty flame on combustion.

Asked in: AP EAMCET 2014

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