Question

Washing soda is used:
1. for removing permanent hardness of water
2. for disinfecting drinking water
3. as a cleaning agent for domestic purpose
Which of the above is/are correct?

• A. Only 1 and 2
• B. Only 1 and 3
• C. Only 2 and 3
• D. All of the above

Hint:

Washing soda is effective in softening hard water and cleaning purposes, but not for water disinfection.

Answer 1

The Correct Option is B

Washing soda (sodium carbonate) is used for removing permanent hardness in water and as a cleaning agent. It is not commonly used for disinfecting drinking water.