Why is bleaching powder used for removing colour?
Answer and explanation
Correct answer: It can provide available chlorine
The relevant concept is bleaching by oxidation. In the presence of moisture, bleaching powder releases available chlorine, which produces oxidising substances such as hypochlorous acid. These oxidise many coloured compounds and make them colourless. Therefore option A is correct. The other choices describe no chemical property responsible for bleaching and are unrelated to colour removal.
Frequently asked questions
What is the correct answer to this question?
It can provide available chlorine
Why is this the correct answer?
The relevant concept is bleaching by oxidation. In the presence of moisture, bleaching powder releases available chlorine, which produces oxidising substances such as hypochlorous acid. These oxidise many coloured compounds and make them colourless. Therefore option A is correct. The other choices describe no chemical property responsible for bleaching and are unrelated to colour removal.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
