`{:("Column I","Column II"),((A)2NO_(2)overset("Cool")to,(p)"One of the products is a mixed anhydride ." ),((B)CIO_(2)+O_(3)overset(H^(+))to,(q)"One of the products is an acidic oxide."),((C)K_(4)[Fe(CN)_(6)]+H_(2)SO_(4)("conc".)+H_(2)Ooverset(Delta)to,(r)"The oxidation state of the central atom of one of the products is +6."),((D)KOH+O_(3)to,(s)"One of the products is a colourless paramagnetic gas".):}`

Answer

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

Explanation

(A) `2NO_(2)overset("Cool")toN_(2)O_(4)` colourless solid //liquid, acidic, mixed anhydride of `HNO_(2)and HNO_(3)`.
`2CIO_(2)+2O_(3)overset(H^(+))toCI_(2)O_(6)`(yellow solid)`+2O_(2)`, acidic,mixed anhydride of `HCIO_(3) and HCIO_(4)`
(C) `K_(4)[Fe(CN)_(6)]+6H_(2)O+6H_(2)SO_(4)overset(Delta)to2K_(2)SO_(4)+FeSO_(4)+3(NH_(4))_(2)SO_(4)+6COuarr`
(D) `2KOH+5O_(3)to2KO_(3)("orange solid")+5O+H_(2)O`