Q. Most commonly used bleaching agent is:
Answer: Chlorine
Notes: Chlorine is used to disinfect water and is part of the sanitation process for sewage and industrial waste. During the production of paper and cloth, it is used as a bleaching agent. It is also used in cleaning products; including household bleach which is chlorine dissolved in water. Bleaching powder is an important and a commonly used bleaching agent prepared from chlorine.