Chemistry
Grade-10
Easy
Question
Which of the following compound is used for softening of water?
- Baking soda
- Sodium chloride
- Chlorine
- Washing soda
Hint:
Washing soda is used for softening of water.
The correct answer is: Washing soda
- Water is hard due to the presence of calcium and magnesium salts.
- The chemical name of washing soda is hydrate of sodium carbonate, Na2CO3.10H2O
- Washing soda is used for softening of water.
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