| [ A ] Reverse osmosis |
 |
| [ B ] Simple osmosis | |
| [ C ] Use of sodium aluminium silicate as zeolite | |
| [ D ] Use of ion selective electrodes |
| [ A ] Reverse osmosis |
|
| [ B ] Simple osmosis | |
| [ C ] Use of sodium aluminium silicate as zeolite | |
| [ D ] Use of ion selective electrodes |
| Answer : Option A |
| Explanation : |
| Reverse osmosis method is used to obtain pure water from water containing a salt or for desalination of sea water. |
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