Question

The incorrect statement among the following is :

JEE MAINS 2021

• A. $VOS{O}_4$ is a reducing agent
• B. Red colour of ruby is due to the presence of $C{o}^{3+}$
• C. $C{r}_2{O}_3$ is an amphoteric oxide
• D. $Ru{O}_4$ is an oxidizing agent

Answer 1

The correct option is B Red colour of ruby is due to the presence of $C{o}^{3+}$

Red colour of the ruby is due to the presence of $C{r}^{3+}$ .

$Ru{O}_4$ is an oxidizing agent.

$VOS{O}_4\Rightarrow V{O}^{2+}\Rightarrow V^{4+}$ (it can oxidized) So it is a reducing agent.

$C{r}_2{O}_3$ is amphoteric oxide