Which substance is used for bleaching clothes and wood pulp?
Answer and explanation
Correct answer: Bleaching powder
Bleaching powder is used as a bleaching agent because it releases chlorine or active chlorine in suitable conditions. This active chlorine oxidises many coloured substances, reducing or removing their colour from cloth and wood pulp. Sodium chloride is common salt, ammonium chloride is used in several laboratory and industrial applications, and gypsum is a calcium sulfate mineral. Therefore only option A matches this use.
Frequently asked questions
What is the correct answer to this question?
Bleaching powder
Why is this the correct answer?
Bleaching powder is used as a bleaching agent because it releases chlorine or active chlorine in suitable conditions. This active chlorine oxidises many coloured substances, reducing or removing their colour from cloth and wood pulp. Sodium chloride is common salt, ammonium chloride is used in several laboratory and industrial applications, and gypsum is a calcium sulfate mineral. Therefore only option A matches this use.
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.
