Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 1: Assam CEE 2017

Which of the following changes does not involve any electron transfer?

The oxidation number of chlorine in bleaching powder is:

In the cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents used are respectively:

For a reaction ${\mathrm{xNH}}_3+{\mathrm{yO}}_2\to \mathrm{zNO}+{\mathrm{wH}}_2\mathrm{O}$, if $\mathrm{x}=4$ then $\mathrm{y},\mathrm{z},\mathrm{w}$ are respectively

In the following reaction $3{\mathrm{Br}}_2+6{\mathrm{CO}}_3^{2-}+3{\mathrm{H}}_2\mathrm{O}\to 5\mathrm{Br}+{\mathrm{BrO}}_3^{-}+6{\mathrm{HCO}}_3^{-}$