4. How will you show that air is dissolved in water?5. Why does a lump – InterviewSolution

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1.	4. How will you show that air is dissolved in water?5. Why does a lump of cotton wool shrink in water?
Answer» <p>Ans :- 4.Toshow that air is dissolved in waterwe takewaterin a pan and heat it. Just before it boils, you will notice some bubbles at the inner surface of the pan. These bubbles are formed because ofair dissolved in water.</p><p>5.Alump of cotton wool shrinks when immersed inwater. Thisisbecause air present in thecotton woolescapes. Thus, the volume of thecotton wooldecreases.</p> <p>thanks for the shot answer </p>

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