Chemistry, asked by deenapravin, 7 months ago

15.The chemical substance used to remove permanent hardness of water..

1. Sodium Carbonate decahydrate,

2. Sodium Hydroxide

3. Sodium chloride

4. All the above

Answers

Answered by Anonymous

1

Answer:

1. sodium carbonate decahydrate hope it helps you dear

Answered by rishabhdabral732

1

Answer:

All of above

Options 4 is correct

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