$3.$ Which of the following methods is commonly used for the removal of turbidity from water?a$)$ Reverse osmosisb$)$ Filtrationc$)$ Distillationd$)$ ChlorinationWhat is the primary purpose of adding chlorine to drinking water?a$)$ To remove dissolved mineralsb$)$ To adjust the pHc$)$ To disinfect the waterd$)$ To reduce turbidityWhich of the following is NOT a potential health hazard associated with drinking water?a$)$ Microorganismsb$)$ Heavy metalsc$)$ Organic compoundsd$)$ Sodium ionsWhich of the following is a primary objective of water treatment for drinking purposes?a$)$ To increase the concentration of dissolved mineralsb$)$ To eliminate all microorganismsc$)$ To improve taste and odord$)$ To decrease the pH level