Question

4. How will you show that air is dissolved in water?
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Answer 1

Answer:

Take some water in a glass or metal container like pan and heat it. Just before water begins to boil, you will notice some bubbles at the inner surface of the pan. These bubbles come from the air dissolved in water. This shows that air is dissolved in water.

Answer 2

Answer:

take some water in metal pan or bowl and heat it then u will observe that the bubbles at the inner surface of the pan these bubbles comes form air this shows that the air is present in the water