XdiH2SO4−−−−−→boiYZndust−−−−→ΔQ if one mole Y on ozonolysis yields three moles of ethan dial, X and Q respectively are
Naphthalene, Phenol
Benzene sulphonic acid, Nitrobenzene
Benzene sulphonic acid, Phenol
Phenol, Toulene
X=C6H5−SO3HQ=C6H5−OH
Compound A on sulphonation with oleum forms benzene sulphonic acid, which on heating with NaOH and acidification yields phenol. What is Compound A?