Question

Hardness of water can be removed by using?

• A. vinegar
• B. POP
• C. washing soda
• D. common salt

Answer 1

Answer:

C. washing soda

• Hardness of water can be removed by using washing soda.

• Washing soda (sodium carbonate) reacts with the calcium and magnesium ions present in hard water to form insoluble carbonates, which can then be removed by filtration.

• This process is effective for removing both temporary and permanent hardness.