Question

Chlorinated lime contains ____% W/W of chlorine.

• A. 10
• B. 20
• C. 30

Hint:

Bleaching powder standard = 30% available chlorine.

Answer 1

The Correct Option is C

Step 1: Concept
Chlorinated lime, also known as bleaching powder, is used as a disinfectant and bleaching agent.

Step 2: Meaning
Its efficacy is measured by the "available chlorine" content, which is the amount of chlorine released upon reaction with acids.

Step 3: Analysis
According to pharmaceutical standards (IP/BP), stable chlorinated lime should contain not less than 30% w/w of available chlorine.

Step 4: Conclusion
Therefore, 30% is the standard required concentration for its antimicrobial and bleaching properties.

Final Answer: (C)