Identify the incorrect statement based on the | vedclass

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(A) $1$. The reaction of benzene diazonium chloride with phosphinic acid $(H_3PO_2)$ yields benzene $(A)$.$2$. Benzene reacts with $SO_3$ (sulfonation

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$D$ is insoluble in alkali

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(A) $1$. The reaction of benzene diazonium chloride with phosphinic acid $(H_3PO_2)$ yields benzene $(A)$.$2$. Benzene reacts with $SO_3$ (sulfonation) to form benzene sulfonic acid ($B$,$C_6H_5SO_3H$).$3$. Benzene sulfonic acid reacts with $PCl_5$ to form benzene sulfonyl chloride ($C$,$C_6H_5SO_2Cl$).$4$. Benzene sulfonyl chloride reacts with ethylamine $(EtNH_2)$ to form $N$-ethylbenzene sulfonamide ($D$,$C_6H_5SO_2NHC_2H_5$).$5$. Evaluating the statements:- $A$ (benzene) is $NOT$ formed when phenol is heated with $Zn$ dust; rather,benzene is formed,but the statement implies a specific synthesis pathway. Actually,phenol + $Zn$ dust gives benzene,so statement $B$ is correct.- $B$ (benzene sulfonic acid) when fused with $NaOH$ followed by acidification gives phenol. This is a standard reaction. Statement $C$ is correct.- $C$ $(C_6H_5SO_2Cl)$ contains chlorine. Statement $D$ is correct.- $D$ $(C_6H_5SO_2NHC_2H_5)$ contains an acidic hydrogen on the nitrogen atom,making it soluble in alkali. Therefore,the statement '$D$ is insoluble in alkali' is incorrect.

Identify the incorrect statement based on the following reaction sequence:
$C_6H_5N_2^+Cl^-$ $\xrightarrow{H_3PO_2/H_2O} A$ $\xrightarrow{SO_3} B$ $\xrightarrow{PCl_5} C$ $\xrightarrow{EtNH_2} D$

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Identify the incorrect statement based on the following reaction sequence:$C_6H_5N_2^+Cl^-$ $\xrightarrow{H_3PO_2/H_2O} A$ $\xrightarrow{SO_3} B$ $\xrightarrow{PCl_5} C$ $\xrightarrow{EtNH_2} D$