`underline (A) overset( 4 K OH, O_(2))to 2underline (B) underset(("Green"))(+2H_(2)O)`
`3 underline(B) overset(4HCl) to 2 underline (C) underset(("Puple"))(+ MnO _(2) +) 2 H _(2)O `
`2 underline (C) overset(H_(2) O, KI) to2 underline (A) + 2KOH+ underline(D)`
In the above sequence of reaction `underline (A) and underline (D)` respectively, are:

Options

A. `KI and K MnO _(4)`
B. `MnO _(2) and KIO _(3)`
C. `KIO_(3)and MnO _(2)`
D. `KI and K_(2) MnO _(4)`

Answer

B

Explanation

`underset((A))(MnO _(2))overset(4K OHO _(2))to underset((B))underset(("Green"))(2K_(2)MnO _(4))+ 2H_(2)O`
`2K_(2)underset((B))(MnO _(4))+ 4 HCl to underset((A))(2MnO _(2))+ 2KOH+ KIO_(3)`
`underset((C))(2KMnO _(4))+ H _(2)O + KI to underset((A))(2MnO_(2))+ 2KOH+ KIO_(3)`