Which statement is incorrect?

Which of the following products is obtained when phenol is treated with $CHCl_3$ and $NaOH$?

The order of melting point of ortho-,meta-,and para-nitrophenol is

An aromatic compound $X$ when heated with $Zn$ powder gives benzoic acid,but when heated with soda lime,it gives phenol. Identify the compound $X$.

Which of the following fact$(s)$ explain$(s)$ why $p-$nitrophenol is more acidic than phenol?
$I$. $-I$ Effect of the nitro group.
$II$. Greater resonance effect of the $p-$nitrophenoxy group.
$III$. Steric effect of the bulky nitro group.

The product obtained is/are