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Hardness of water is estimated by simple...

Hardness of water is estimated by simple tirtration with

A

`Na_(2)` EDTA

B

NaEDTA

C

`Na_(3)` EDTA

D

`Na_(4)` EDTA

Text Solution

Verified by Experts

The correct Answer is:
C
When pH of rain water is in the range of 4 – 4.5 (less than 6.5), it is called acid rain.
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