Bleaching action of chlorine is by

A. Oxidation
B. Reduction
C. Decomposition
D. Hydrolysis

Check Answer

The correct answer is A. Oxidation.
The bleaching action of chlorine is due to its oxidizing property. Chlorine is a powerful oxidizing agent that can remove the color of organic substances by breaking the chemical bonds that give them their color. When chlorine gas is added to a colored solution, it reacts with the double bonds in the chromophore group of the color molecule, breaking the bond and oxidizing the molecule. This causes the molecule to lose its color and become bleached. This process is also called a “chlorination” reaction.
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