1.

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

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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