Q. When $MnO_{4}$ is fused with KOH, a coloured compound is formed. The product and its colour is
A) $K_{2}MnO_{4}$, purple colour
B) $Mn_{2}O_{3}$, brown
C) $Mn_{2}O_{4}$, black
D) $KMnO_{4}$, purple
Explanation
(a)
$2MnO_{2} + 4KOH + O_{2} \rightarrow 2K_{2}MnO_{4} + 2H_{2}O$
purple green
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.