Civil Engineering - UPSC Civil Service Exam Questions - Discussion

44. 

Zero hardness of water is achieved by :

[A]. using lime soda process
[B]. excess lime treatment
[C]. ion exchange method
[D]. using excess alum dosage

Answer: Option C

Explanation:

No answer description available for this question.

Rdj said: (Apr 5, 2020)  
The method is also called base exchange or zeolite method.

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