In a basic medium `H_2O_2` exhibits which of the following reactions?
A. `Mn^(2+) to Mn^(4+) `
(B) `I_2 to I^(-)`
(C) `PbS to PbSO_4`
Choose the most appropriate answer from the options given below:

Options

A. (A) only
B. A, B only
C. B only
D. A, C Only

Answer

B

Explanation

In basic medium, oxidising action of `H_(2)O_(2)`
`Mn^(2+) + H_(2)O_(2) to Mn^(+4) + 2OH^(-)`
In basic medium, reducing action of `H_(2)O_(2)`
`I_(2)+ H_(2)O_(2) + 2OH^(-) to 2I^(-) + 2H_(2)O + O_(2)`
In acidic medium, oxidising action of `H_(2)O_(2)`
`Pb(s) + 4H_(2)O (aq) to PbSO_(4)(aq) + 4H_(2)O(l)`
Hence, correct option (b).