The cyclopentadienyl anion is:

What are the various steps of electrophilic substitution of benzene?

$A$ compound $X$ formed after heating coke with lime reacts with water to give $Y$,which on passing over red hot iron at $873 \ K$ produces $Z$. The compound $Z$ is:

In electrophilic aromatic substitution reaction,the nitro group is meta-directing because it

The correct order of reactivity towards Electrophilic Substitution Reaction $(E.S.R.)$ for the following compounds is:
$(i)$ Toluene
(ii) $m$-Methoxytoluene
(iii) Benzaldehyde
(iv) $p$-Nitrobenzaldehyde

Which of the following has the lowest heat of combustion?