Which of the following can act as an oxidising agent as well as a reducing agent? 1. `H_(2)O_(2)`, 2. `H_(2)S`, 3. `SO_(2)`, 4. `HNO_(2)`A. `1,2,3`B. `2,3,4`C. `1,3,4`D. All

Which of the following can act as an oxidising agent as well as a redu

1.	Which of the following can act as an oxidising agent as well as a reducing agent? 1. `H_(2)O_(2)`, 2. `H_(2)S`, 3. `SO_(2)`, 4. `HNO_(2)`A. `1,2,3`B. `2,3,4`C. `1,3,4`D. All
Answer» Correct Answer - C 1. `H_(2)O_(2)` undergoes oxidaton to `O_(2)` and also undergoes reduction to give `H_(2)O` (`-1` oxidation state to `0` and `-2`). 2. `S^(2-)` undergoes only oxidation either to `S,SO_(2)` or `SO_(4)^(2-)` in which oxidation number changes from `-2` to `0,+4`, or +6` `3. `SO_(2)` (oxidation number of `S` is `+4`) can undergo oxidation and reductio. `S` is having highest oxidation state of `+6`. The element in a molecule having its oxidation state in the middle (i.e. minimum and lt maximum) can be used os oxidant and as reductant both. 4. `HNO_(2)` (oxidation number of `N` is `+3`). Highest oxidation state of `N` is `+5`. So it can undergo both oxidant and reductant.

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Which of the following can act as an oxidising agent as well as a reducing agent? 1. `H_(2)O_(2)`, 2. `H_(2)S`, 3. `SO_(2)`, 4. `HNO_(2)`A. `1,2,3`B. `2,3,4`C. `1,3,4`D. All

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