Advertisements
Advertisements
Question
What are the methods of removing hardness of water?
Solution
- Boiling – Temporary hardness is easily removed from water by boiling.
- Adding washing soda – Washing soda is used to remove the permanent hardness of the water.
- Ion-exchange – This converts hard water into soft water.
- Distillation – Temporary and permanent hardness both can be removed by the method of distillation.
APPEARS IN
RELATED QUESTIONS
What do you observe when Washing soda is exposed to air ?
Suggest one method for the removal along with the reaction for temporary hardness.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Differentiate between Temporary & permanent hard water with suitable examples.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you prove the advantage of detergent over soap.
Permanent hardness of water is due to the presence of _______.
Temporary hardness of water can be removed by ________ of water.
What is the reason for the hardness of water?
