Question

Why does the air filled in bicycle tube keep it tight?
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Answer 1

Answer:

When we put air in the balloon, then the number of air molecules in the balloon increases. ... This air pressure exerted from inside, inflates the bicycle tube, So, it is the pressure exerted by air filled in a bicycle tube which keeps the tube tight and makes the bicycle tyre feel hard.

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Answer 2

Explanation:

air filled in tube exert pressure that helps the tube to be tight ..

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