Question

Give reason for the following.

1)walls of a plastic bottle having hot water get deformed on closing the lid​

Answer 1

Answer:

the walls of a plastic bottle tend to get deformed or crushed inwards when the bottle is closed after pouring some hot water in it why. After closing the bottle, this steam condenses and because some air is pushed out, vaccum is created in the bottle which leads to its deformation.

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Answer 2

Answer:

Walls of plastic bottle having hot water get deformed on closing the lid because the atmospheric pressure inside the bottle decreases and the greater atmospheric pressure outside crushes and deforms the bottle.

Hope it helps !!!