Chemistry - Salt Analysis Question with Solution | TestHub

(A) I⁻ + conc. H₂SO₄ (hot) → violet vapours of I₂ Correct statement

(Iodide is oxidized to iodine, violet fumes)

(B) Griss–Ilosvay test → formation of red azo dye Correct statement

(C) Lowest temperature zone of Bunsen flame is just above luminous flame Incorrect

Actual lowest temperature zone is outermost non-luminous region, not above luminous flame.

(D) Fe²⁺ + NH₄SCN → brown colour Incorrect

Brown/red color with thiocyanate is given by Fe³⁺ (not Fe²⁺).

Therefore incorrect statements are:

C and D