Question

III. Read the following passage and answer the following questions
.
Flow of air

Take a large plastic bottle and a two holed rubber cork that fits firmly into its mouth. Also take two glass tubes. Tie a coloured balloon to the lower end of one of the glass tubes. Insert the glass tubes into the two holes of the cork. The glass tubes should fit tightly in the holes.
Close the mouth of the bottle with the cork and seal it with sealing wax to make the bottle airtight. The balloon should be inside the bottle as shown in Fig.

Now suck air out of the bottle through the tube that doesn't have a balloon attached to it.
9. What happens to the balloon?
10. Why do you think this happened?​

Answer 1

Answer:

9. there is no change in the balloon..

10.this happens because sinking air out of the bottle through the tube that doesn't have a balloon attached to it results in the back of oxygen inside the bottle but the balloon is not inflated therefore there would be no change in it ..

Answer 2

Answer:

up.bord.10 paper.2020 answer