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Question : Answer question numbers (a) - (d) on the basisof your understanding of the followingparagraph and the related studied concepts :•Takesome freshly prepared lime water in a test tube.•Blowair through thislime water .•Note how long it takesfor the lime water to turn milky.•Use a syringe or pichkari to pass air through some fresh lime water taken in anothertest tube.(a)What change would you expect in figure 'a'and 'b' ?(b)Why do you observe the change in 'b'?(c)What is the source of thiscomponent ?(d)State the significanceof thisactivity.

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Solution :(a)Thetest significance ofthisactivity.
(b)Limewaterturnsmilkywhen `CO_(2)`reaches it and forming `CaCO_(3)`whichis WHITISH in colour.
(c)`CO_(2)`is REACHING limewater through the exhaled AIR .
(d)Thisactivity signifiesthatwe exhale`CO_(2)`when we breathe.


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