Which household technique is commonly used to remove all the micro organisms present in the water?
Boiling
Using Chlorinated tablets
Using Electric filter
All of the above
Boiling, using chlorinated tablets and electric filters - all these methods are used at homes to purify water.
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