MCQOPTIONS
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				| 1. | 
                                    Iron & manganese present as pollutant in water can not be removed by | 
                            
| A. | ion exchange process. | 
| B. | oxidation followed by settling & filtration. | 
| C. | lime soda process or manganese zeolite process. | 
| D. | chlorination. | 
| Answer» E. | |