For the conversion $C$ (graphite) $\to C$ (diamond),the $\Delta S$ is:

What is the unit of $\Delta S_m^\circ$?

Assertion : Entropy of ice is less than water.
Reason : Ice has a cage-like structure.

Melting point of a solid is $x \ K$ and its latent heat of fusion is $600 \ cal \ mol^{-1}$. The entropy change for fusion of $1 \ mol$ solid is $2 \ cal \ mol^{-1} \ K^{-1}$. The value of $x$ will be......$K$

For which one of the following reactions, the entropy change is positive?

Calculate the entropy change for melting $1 \ g$ of ice at $0^{\circ} C$ in $J \ g^{-1} K^{-1}$,if the heat of fusion of ice at $0^{\circ} C$ is $80 \ J \ g^{-1}$.