जल शोधन के दौरान जब पानी में क्लोरीन मिलाया जाता है, तो यह मुख्य रूप से किस रूप में कार्य करता है?

Turbidity in water is measured on which standard scale?

Mudball formation in rapid sand filters is the result of:

In a water sample, if 2 mg of platinum cobalt salt is dissolved in 1 litre of distilled water, then the colour produced is equal to: