A closed bottle containing water at $30°C$ is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened
Water will boil
Water will freeze
Nothing will happen on it
It will decompose into ${H_2}$ and ${O_2}$
The saturation vapour pressure of water at $100°C$ is ........ $mm$ of mercury
By exerting a certain amountof pressure on an ice block, you
Which of the substances $A, B$ or $C$ has the highest specific heat $?$ The temperature vs time graph is shown
Answer the following questions based on the $P-T$ phase diagram of $CO _{2}$
$(a)\;CO _{2}$ at $1\; atm$ pressure and temperature $-60\,^{\circ} C$ is compressed isothermally. Does it go through a llquid phase?
$(b)$ What happens when $CO _{2}$ at $4\; atm$ pressure is cooled from room temperature at constant pressure?
$(c)$ Describe qualitatively the changes in a given mass of solid $CO _{2}$ at $10 \;atm$ pressure and temperature $-65\,^{\circ} C$ as it is heated up to room temperature at constant pressure.
$(d)\;CO_{2}$ is heated to a temperature $70\,^{\circ} C$ and compressed isothermally. What changes in its properties do you expect to observe?
What are fusion and melting point ? On what does the value of melting point depend ?