The boiling point of a liquid is the temperature at which the vapour pressure ____________
(a) Is equal to the internal pressure
(b) Is equal to the external pressure
(c) Is greater than an internal pressure
(d) Is lesser than an internal pressure
This question was posed to me in an interview.
This intriguing question originated from Boiling Point in portion Criteria of Purity and Characterisation of Materials of Engineering Chemistry I