Question

Mercury melts at ${-39}^{\circ }C$ and boils at ${357}^{\circ }C$. Alcohol melts at ${-115}^{\circ }C$ and boils at ${78}^{\circ }C$. At which temperature are both substances in the liquid state?

Answer 1

Melting point of mercury is $-{39}^{o}C$ and its boiling point is

${357}^{o}C$. Thus mercury remains in liquid form in the temperature range

$-{39}^{o}C$ to

${357}^{o}C$. On the other hand, m

elting point of alcohol is $-{115}^{o}C$ and its boiling point is

${78}^{o}C$. Thus alcohol remains in liquid form in the temperature range

$-{115}^{o}C$ to

${78}^{o}C$.

Hence both the substance remains in liquid state in the temperature range $-{39}^{o}C$ to ${78}^{o}C$.