Question

A bottle gets crushed when all its air is removed....Give reasons

Answer 1

The atmosphere exerts pressure on everything

Thus every object has to exert a pressure to avoid getting crushed

That is why if we go to the moon or space we need to wear pressure suits (the pressure there is different)

The bottle's pressure is provided by the fluid inside it either the air or water

Therefore when we remove air using Vaccum Pump the bottle gets crushed