1.

Match the following{:(,"Column - A",,,"Column - B"),((A),"Rain water","()",(a),"Free of suspended impurities."),((B),"Rivers and lakes","()",(b),"Purest form of natural water."),((C),"Underground water","()",(c),"Water obtained after reverse osmosis."),((D),"Demineralized water","()",(d),"Water coming out of an ion exchange apparatus."),(,,"()",(e),"Fresh water for consumption for various activities."):}

Answer»

A `rarr` c, B `rarr` b, C `rarr` a, D `rarr` d, e
A `rarr` b, B `rarr` e, C `rarr` a, D `rarr` d
A `rarr` b, B `rarr` a, C `rarr` d, D `rarr` e
A `rarr` b, B `rarr` a, e, C `rarr` c D `rarr` d

Solution :A `rarr` b:RAIN water is the purest FORM of natural water.
B `rarr` e:River and lake water is considered as fresh water and is available for CONSUMPTION for various activities
C `rarr` a: Underground water during seepage gets filtered through various layers of SOIL and hence does not contain suspended impurities.
D `rarr` d:The water coming out of an ion exchange APPARATUS contains only pure water and is called dematerialized water.


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