उच्च लवण सांद्रता वाले जल (खारे पानी) को किस विधि द्वारा शुद्ध व विलवणीकृत किया जा सकता है?

Reverse osmosis (RO) is a widely used technology for removing dissolved salts and minerals from:

Which of the following elements is most commonly used as a disinfectant in municipal water purification?

Which process is primarily used to remove suspended solid particles like dirt and sand from wastewater?