Question

Which of the following changes involve reduction?

• A. The conversation of ferrous sulphate to ferric sulphate
• B. The conversation of $H_{2}S$ to $S$
• C. The conversation of $C{l}_2$ to $NaCl$
• D. The conversation of $Zn$ to $ZnS{O}_4$

Answer 1

The correct option is C The conversation of $C{l}_2$ to $NaCl$

$\begin{array}{c}FeS{O}_4\to F{e}_2{\left(S{O}_4\right)}_3\\ +2to+3\\ 2x+(-2\times 3)=0\\ x=+3\\ oxidation\\ C{l}_2\to NaCl\\ 0to-1\\ reduction\end{array}$

So, it can be clearly seen that the conversion of $C{l}_2$ to NaCl is the only change in which reduction is taking place.