Boiling water is changing into steam. Under this condition,the specific heat of water is

When $0.93 \, W \cdot h$ of energy is supplied to a block of ice weighing $10 \, g,$ it is found that

$A$ substance of mass $m \ kg$ requires a power input of $P \ W$ to remain in the molten state at its melting point. When the power is turned off,the sample completely solidifies in time $t \ s$. What is the latent heat of fusion of the substance?

$A$ solid material is supplied with heat at a constant rate and the temperature of the material changes as shown in the graph. From the graph,the false conclusion drawn is:

Match the following items in Column-$I$ with their corresponding definitions in Column-$II$.

Column-$I$	Column-$II$
$A$. Conversion of liquid into solid is	$1$. Regelation
$B$. Conversion of liquid into vapour is	$2$. Sublimation
$C$. Conversion of solid into vapour directly is	$3$. Fusion
$D$. Melting of ice caused by pressure is	$4$. Vaporisation

$A$ solid material is supplied with heat at a constant rate. The temperature of the material changes with heat input as shown in the figure. What does the slope of $DE$ represent?