Question

$C{l}_2$ and $S{O}_2$ are pollutants as well as bleaching agents. Their bleaching action is due to

$S{O}_2$	$C{l}_2$
(a) Oxidation	Oxidation
(b) Reduction	Reduction
(c) Oxidation	Oxidation
(d) Reduction	Oxidation

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (D)

$S{O}_2$ in the presence of moisture releases nascent $H$ which acts as bleaching agent of flowers, textiles, etc
$S{O}_2+2H_{2}O\to H_{2}S{O}_4+2H_{Bleachingagent}$
$C{l}_2$ in the presence of moisture releases nascent O which acts as bleaching agent
$C{l}_2+H_{2}O\to 2HCl+O_{Bleachingagent}$