Environment & Ecology · Environmental Studies
The technique for removing excess fluoride from water by using lime and alum is commonly known as the ________.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Sedimentation technique
- 2Ion exchange technique
- 3Nalgonda technique✓
- 4SODIS method
Correct answer
Nalgonda technique
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