The usefulness of bleaching powder depends on available chlorine. What is the best reason for storing it in a closed container?
Answer and explanation
Correct answer: To reduce loss of available chlorine
Bleaching powder, commonly represented as CaOCl₂, owes its bleaching and disinfecting action to available chlorine. On prolonged exposure to atmospheric moisture and carbon dioxide, it gradually decomposes and loses available chlorine, reducing its effectiveness. A closed container limits contact with air and moisture, so option A is correct. The other options describe unrelated products or an impossible purpose; storage does not convert bleaching powder into salt, gypsum, or food.
Frequently asked questions
What is the correct answer to this question?
To reduce loss of available chlorine
Why is this the correct answer?
Bleaching powder, commonly represented as CaOCl₂, owes its bleaching and disinfecting action to available chlorine. On prolonged exposure to atmospheric moisture and carbon dioxide, it gradually decomposes and loses available chlorine, reducing its effectiveness. A closed container limits contact with air and moisture, so option A is correct. The other options describe unrelated products or an impossible purpose; storage does not convert bleaching powder into salt, gypsum, or food.
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.
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