Question

if boiling point of mercury is 300 degree Celsius & that of water boiling point is 500 degree Celsius how much is the boiling point of water warmer than mercury​

Answer 1

The mercury thermometer can be used above its boiling point by filling up the space above mercury with nitrogen at high pressure because as pressure increases, boiling point also increases.

Mercury melts at −39∘C and boils at 357∘C. Alcohol melts at −115∘C and boils at 78∘C.