Answers

2015-04-04T17:22:44+05:30
Take some water heat it just before it boils you will notice bubble in inner surface of pan this is because of air present in water 
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2015-04-04T17:24:44+05:30
To proove that air is dissolved in water just follow the given steps :- ⇒1) Take a pan and add some water to it...⇒2) Heat the pan and we will notice that water starts boiling. ..⇒3) Before boiling of water we find some of the bubbles present in the inners surface of the pan......[so this bubbles clearly shows that air is dissolved in water. ]
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