Question

Testing the hardness presence of iron fluoride chloride etc depending upon the regional variation in drinking water and the study of cause of presence of these ions above permissible limit

Answer 1

What is the question

I cant understand

Answer 2

Hard water have different ions depending on its source although most water contain ions from the rocks that the water has passed throgh

There are different ions in water from halide ions to copper ions to iron ions to nitrate ions to alluminium ions depending on the nature of the source of water or the rocks from which water is obtained .hence each test is done differently to test for the ions