Question

why isnt boiling point of water on mountain top the same as that on the ground​

Answer 1

The boiling temperature of a liquid is when its vapour pressure equates to the atmospheric pressure above it. Therefore on a mountain top (or even on board a plane that reduces cabin pressure to below ground pressure), which has a reduced atmospheric pressure, the water boils at a lower temperature

Answer 2

Answer:

because of the difference in atmospheric pressure.