MCQ
Which of the following is non-aromatic ?
- APyrrole
- BThiophene
- CFuran
- ✓Pyran
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$(i)$ ${C_6}{H_5}{N^ + } \equiv NC{l^ - }$ $(ii)$ ${C_6}{H_5}{N^ + } \equiv N$
$(iii)$ ${{\overset{\centerdot }{\mathop{C}}\,}_{6}}{{H}_{5}}$ $(iv)$ $C_6H_5Cl$

| List $I$ (Fuels) | List $II$ (Composition) |
| $A.$ Water gas | $i.$ A mixture of $CO$ and $N_2$ |
| $B.$ Producer gas | $ii.$ Methane |
| $C.$ Coal gas | $iii.$ A mixture of $CO$ and $H_2$ |
| $D.$ Natural gas | $iv.$ A mixture of $CO$, $H_2$, $CH_4$ and $CO_2$ |
$A\,-\,B\,-\,C\,-\,D$ Respectively