A colours substance 'A' `(C_(6)H_(7))` is sparingly soluble in water and gives a water soluble comound 'B' on treating with mineral acid. On reaction wih `CHCl_(3)` and alcoholic potash 'A' produces an obnoxious smell due to the formation of compound 'C'. Reaction of 'A' with benzensulphonyl chloride gives compound 'D' which is soluble in alkali. WIth `NaNO_(2)` and HCl, 'A' forms compound 'E' which reacts with phenol in alkaline medium to give an orange dye 'F'. Identify compounds 'A' to'F'.

Explanation