What happens to the entropy during the melting of ice to water?

The entropy change when $2 \, \text{moles}$ of an ideal monoatomic gas is heated from $200 \, ^\circ \text{C}$ to $300 \, ^\circ \text{C}$ isochorically is:

What is entropy?

Why does the entropy of a substance increase with an increase in temperature?

The enthalpy of vaporisation of a certain liquid at its boiling point of $35^{\circ} C$ is $24.64 \ kJ \ mol^{-1}$. The value of change in entropy for the process is

Match the following processes with their corresponding entropy changes:

$a$. Liquid to vapor conversion	$1$. $\Delta S = 0$
$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$	$2$. $\Delta S = (+)$
$c$. Reversible expansion of an ideal gas	$3$. $\Delta S = (-)$