Question

How can you show that an Empty glass is not really empty but is filled with air.​

Answer 1

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Take the glass and push it upside down in the tub filled with water . You will observe that water does not enter the glass as air is dissolved in it . ... This time you will observe that water enters the glass and some bubble sound or bubbles in water . This proved that the glass was not really empty

Answer 2

Take the glass and push it upside down in the tub filled with water. You will observe that water does not enter the glass as air is dissolved in it. This time you will observe that water enters the glass and some bubble sound or bubbles in water. This proved that the glass was not really empty.