Chemistry
Which of the following salts cause permanent hardness of water ?
- Calcium sulphate
- Calcium bicarbonate
- Sodium chloride
- Magnesium nitrate
Related Questions
Give reason:
On opening a bottle of cold drink, a fizz sound is heard.
The salt which gives water vapour on heating is called :
- Hydrated
- Hygroscopic
- Deliquescent
- Anhydrous
The substance which can remove permanent hardness of water is :
- sodium bicarbonate
- sodium carbonate
- sodium hydroxide
- sodium chloride
Temporary hardness of water can be removed by
- filtering
- boiling
- loading
- none of the above