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In which of the following reactions, oxy...

In which of the following reactions, oxygen is not liberated?

A

Reaction of HOCl with `H_(2)O_(2)`

B

Reaction of acidified `KMnO_(4)" with "H_(2)O_(2)`

C

Reaction of iodine with `H_(2)O_(2)` in basic medium

D

Reaction of lead sulphide with `H_(2)O_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
(i) `2HOCl+H_(2) O_(2)to2H_(2)O+Cl_(2)(g)+O_(2)(g)`
(ii) `3H_(2)O_(2)+2KMnO_(4)to3O_(2)+2MnO_(2)+2KOH+2H_(2)O`
(iii) `H_(2)O_(2)+I_(2)to2HI+O_(2)`
(iv) `PbS+4H_(2)O_(2)toPbSO_(4)+4H_(2)O`
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