Which of the following compounds will $NOT$ produce acetamide upon reaction with ammonia?

Give the reactions of benzoic acid $(C_6H_5COOH)$ with the following:
$(i)$ Sodium metal
$(ii)$ Solution of sodium hydroxide $(NaOH)$
$(iii)$ Solution of sodium bicarbonate $(NaHCO_3)$
$(iv)$ $P_2O_5$ or conc. $H_2SO_4$ $+$ heat
$(v)$ $PCl_5$
$(vi)$ $PCl_3$
$(vii)$ $SOCl_2$
$(viii)$ $NH_3$ $+$ high temperature
$(ix)$ $LiAlH_4$ / ether or $B_2H_6$
$(x)$ Sodalime $(NaOH + CaO)$ $+$ heat
$(xi)$ Conc. $HNO_3$ $+$ conc. $H_2SO_4$ $+$ heat
$(xii)$ $Br_2 + FeBr_3$
$(xiii)$ Oleum $(H_2SO_4 + SO_3)$ $+$ heat

Product $B$ in the following reaction is: $CH_3-COOH$ $\xrightarrow{NH_3, \Delta} A$ $\xrightarrow{P_2O_5, \Delta} B$

The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: $CH_3CH_2COOH$,$CH_3COOH$,$CH_3CH_2CH_2COOH$,$HCOOH$

The increasing order of the reactivity of the following compounds with $LiAlH_4$ is:
$(a)$ $C_2H_5CONH_2$
$(b)$ $C_2H_5COOCH_3$
$(c)$ $C_2H_5COCl$
$(d)$ $(C_2H_5CO)_2O$

The strongest acid among the following compounds is