Question

168. The boiling point of sea water at one atmospheric pressure is a) equal to 100°C c) less than 100°C b) greater than 100°C d) cannot be predicted
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Answer 1

Answer:

Boiling point is the temperature at which the pressure exerted by the surroundings/atmosphere upon a liquid is equal to the pressure exerted by the vapours of the liquid. At elevations/high altitudes like Mount Everest, the atmospheric pressure is low (less than 1 atm), hence a lower vapour pressure of water is required to reach its boiling point. This will result in lowering of boiling point of water from 100∘C at 1 atm. Thus lower the pressure lower is the boiling point or vice-versa.

Therefore, Assertion and reason are correct and correlated

option A is correct