Which of the following combinations shall give rod azo dye with HNO_(2)? (II) (KMnO_(4)+dil. H_(2)SO_(4)) (IV) (FeSO_(4)+dil. CH_(3)COOH)

Which of the following combinations shall give rod azo dye with HNO_(2

1.	Which of the following combinations shall give rod azo dye with HNO_(2)? (II) (KMnO_(4)+dil. H_(2)SO_(4)) (IV) (FeSO_(4)+dil. CH_(3)COOH)
Answer» REACTION with (I) FOLLOWED by reaction with (II) Reaction with (II) followed by reaction with (I) Reaction with only (III) Reaction with only (IV) Answer :A