Which of the following statement incorrect?

Which of the following statement incorrect?

$H N O_{2}$ can act both as a reducing agent and as an oxidising agent but $H N O_{3}$ acts only as an oxidising agent.
The oxidation number of phosphorus can vary from $- 3 t o + 5$ .
The reaction between $N a O H$ and $H_{2} S O_{4}$ is a redox reaction.
Oxidation number can have positive, negative, zero values.

Solution

The reaction between

N a O H

and

H_{2} S O_{4}

is not a redox reaction but it is an acid base neutralization reaction

Asked in: JEE-TOPICTESTS-CHEMISTRY

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