The graph shows the variation of temperature $(T)$ of one kilogram of a material with the heat $(H)$ supplied to it. At $O,$ the substance is in the solid state. From the graph, we can conclude that
${T_2}$ is the melting point of the solid
$BC$ represents the change of state from solid to liquid
$({H_2} - {H_1})$ represents the latent heat of fusion of the substance
$({H_3} - {H_1})$ represents the latent heat of vaporization of the liquid
A copper block of mass $2.5\; kg$ is heated in a furnace to a temperature of $500\,^{\circ} C$ and then placed on a large ice block. What is the maximum amount of ice (in $kg$) that can melt? (Specific heat of copper $=0.39\; J g ^{-1} K ^{-1}$ ;heat of fusion of water $=335\; J g ^{-1})$
Which of the curves in figure represents the relation between Celsius and Fahrenheit temperatures
Values for latent heat in Column$-\,I$ and its values are given in Column$-\,II$. Match the followings :
Column $-\,I$ | Column $-\,II$ |
$(a)$ Latent heat of vaporization $L_V$ | $(i)$ $22.6\, \times \,{10^5}\,J\,/kg$ |
$(b)$ Latent heat of fusion $L_f$ | $(ii)$ $33.3\, \times \,{10^5}\,J\,/kg$ |
$(iii)$ $3.33\, \times \,{10^5}\,J\,/kg$ |
When $M_1$ gram of ice at $-10\,^oC$ (specific heat $= 0.5\, cal\, g^{-1}\,^oC^{-1}$) is added to $M_2$ gram of water at $50\,^oC$, finally no ice is left and the water is at $0\,^oC$. The value of latent heat of ice, in $cal\, g^{-1}$ is
The saturation vapour pressure of water at $100°C$ is ........ $mm$ of mercury