An organic compound (A) of molecular. Weight `135` on boiling with `NaOH` extracts a gas which gives dense white fumes on bringing a rod dipped in `HCl` near it. The alkaline solution thus obtained on acidification gives the precipitate of a compound `(B)`, having molecular weight `136`. treatment of `(A)` with `HNO_(2)` also yields `(B)`, whreas its treatement with `Br_(2)//KOH` gives (C). compound (C) reacts with cold `HNO_(2)` to give `(D)` which gives red colour with ceric ammonium nitrate. on the other hand, `(E)` and isomer of `(A)` on boiling with dilute `HCl` gives an acid `(F)`, havign molecular wheight `136`. on oxidation followed by heating, `(F)` gives an anhydride `(G)` which condenses with benzene in the presence of `AlCl_(3)` to give anthraquinone. give structures of `(A)` to `(G)` with proper reasoning.

Explanation