By exerting a certain amountof pressure on an ice block, you

Fire is extinguished more effectively by

Two different liquids of same mass are kept in two identical vessels, which are placed in a freezer that extracts heat from them at the same rate causing each liquid to transform into a solid. The schematic figure below shows the temperature $T$ versus time $t$ plot for the two materials. We denote the specific heat in the liquid states to be $C_{L 1}$ and $C_{L 2}$ for materials 1 and 2, respectively and latent heats of fusion $U_1$ and $U_2$, respectively. Choose the correct option.

A block of ice at $- 10°C$ is slowly heated and converted to steam at $100°C.$ Which of the following curves represents the phenomenon qualitatively

The graph shown in the figure represent change in the temperature of $5 \,\,kg$ of a substance as it abosrbs heat at a constant rate of $42 \,\,kJ min^{-1}$. The latent heat of vapourazation of the substance is ......... $kJ \,kg^{-1}$

The graph signifies