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4. How will you show that air is dissolved in water?5. Why does a lump of cotton wool shrink in water? |
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Answer» 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. 5.Alump of cotton wool shrinks when immersed inwater. Thisisbecause air present in thecotton woolescapes. Thus, the volume of thecotton wooldecreases. thanks for the shot answer |
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