Question

$Cl_2$ and $SO_2$ are pollutants as well as bleaching agents. Their bleaching action is due to

$SO_2$	$Cl_2$
(a) Oxidation	Oxidation
(b) Reduction	Reduction
(c) Oxidation	Oxidation
(d) Reduction	Oxidation

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (D)

$SO_2$ in the presence of moisture releases nascent $H$ which acts as bleaching agent of flowers, textiles, etc
$SO_2 + 2H_2O \to H_2SO_4+2H_{Bleaching \,agent}$
$Cl_2$ in the presence of moisture releases nascent O which acts as bleaching agent
$Cl_2 + H_2O \to 2HCl + O_{Bleaching agent}$