A student takes $50\,gm$ wax $($specific heat $= 0.6\, kcal/kg°C)$ and heats it till it boils. The graph between temperature and time is as follows. Heat supplied to the wax per minute and boiling point are respectively

A given mass $m$ of a hypothetical solid is supplied with heat continuously at a constant rate and the graph shown in the adjacent figure is plotted. If $L_f$ and $L_v$ are latent heats of fusion and latent heats of vaporization and $S_l$ and $S_s$ are specific heats of liquid and solid respectively. It can be concluded that 

What are vapourization and boiling point ? Explain the process of boiling of water.

What are the states of matter ? Which ?

Which of the substances $A, B$ or $C$ has the highest specific heat $?$ The temperature vs time graph is shown

Two substances $A$ and $B$ of equal mass m are heated at uniform rate of $6\, cal s^{-1}$ under similar conditions. $A$ graph between temperature and time is shown in figure. Ratio of heat absorbed ${H_A}/{H_B}$ by them for complete fusion is