A liquid boils when its vapour pressure equals

At the boiling point of a liquid its vapour pressure is equal to _____.

The vapour pressure of high b.pt. liquids is……..then the vapour pressure of a low boiling liquid:

Define boiling point of a liquid, in terms of its vapour pressure.

Vapour pressure of a liquid ‘A’ is lighter than vapour pressure of liquid ‘B’ at 25^@ C. Which will have higher boiling point?

What is vapour pressure of liquids? How the vapour pressure of a liquid is related to its boiling point?