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Which of the following are used in electric water filters to kill all the harmful micro-organisms present in tap water and make it absolutely safe for drinking? (a) infrared radiation (b) gamma radiation (c) visible radiation (d) ultraviolet radiation |
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Answer» Which of the following are used in electric water filters to kill all the harmful micro-organisms present in tap water and make it absolutely safe for drinking? (a) infrared radiation (b) gamma radiation (c) visible radiation (d) ultraviolet radiation |
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