Match the reactions in Column I with nature of the reactions `//` type of the products in Column II.

Options

A. `" "(p)` Tumbull's blue pigment
B. `BaCl_(2)+K_(2)Cr_(2)O_(7)+H_(2)SO_(4)rarr" "(q)` Schwitzer's reagent
C. `FeSO_(4)+K_(3)[Fe(CN)_(6)]rarr" "®` Chromyl chloride test
D. `Cu(OH)_(2)+NH_(4)OH+(NH_(4))_(2)SO_(4)rarr" "(s)`Photography

Answer

(A-s),(B-r),(C-p),(D-q)

Explanation

O.N. of Cr in X `(FeO.Cr_(2)O_(3))=+3`
O.N. of Cr in Z `Na_(2)Cr_(2)O_(7))=+6`