KVPY SX SB Exam 2016 Question Paper

Question : 74 of 120

Marks: +1, -0

If you exhale multiple times into a conical flask containing lime water through a single inlet fixed through a stop cork, lime water will ?

Solution:

Exhaled air has

CO_2

in it.

{Ca(OH)_2}↙{\Lime \water}+{CO_2}↙{\Exhaled \air} → {CaCO_3}↙{\Milky \white \ppt}+H_2O

So lime water become milky white.

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