On treatment with strong NaOH at 613K, p-chlorotoluene gives:

A solution of a metal salt gives a gelatinous white precipitate on treatment with aqueous ammonia in presence of ammonium chloride. The precipitate on treatment with strong NaOH solution, dissolves giving a colourless solution. The metal ion in the salt is

CrO_(3) on treatment with NaOH solution produces

Phenol on treatment with diethyl sulphate in presence of NaOH gives

Chloral on treatment with aqueous NaOH produces

p-Chlorotoluene on nitration given

An organic compound "A" on treatment with benzene sulphonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is