Which of the following substituents,when attached at the para-position of aniline,decreases its basicity?

Consider the following reaction:
$C_6H_5NO_2$ $\xrightarrow{Sn/HCl} X$ $\xrightarrow{C_6H_5COCl} Y + HCl$
What is $Y$?

Yellow dye can be prepared by a coupling reaction of benzene diazonium chloride in acidic medium with $X$. Identify $X$ from the following.

Which statements are True? $A$. In Hoffmann bromamide degradation,$4$ moles of $NaOH$ and $1$ mole of $Br_{2}$ are consumed per mole of an amide. $B$. Hoffmann bromamide reaction is not given by alkyl amides. $C$. Primary amines can be synthesized by Hoffmann bromamide degradation. $D$. Secondary amide on reaction with $Br_{2}$ and $NaOH$ will give secondary amine. $E$. The by-products of Hoffmann degradation are $Na_{2}CO_{3}$,$NaBr$ and $H_{2}O$. Choose the correct answer from the options given below:

The reduction of benzenediazonium chloride to phenylhydrazine can be accomplished by:

With respect to the following reaction,consider the given statements:
$C_6H_5NH_2 \xrightarrow{HNO_3, H_2SO_4, 288 \ K} \text{products}$
$(A)$ $o$-Nitroaniline and $p$-nitroaniline are the predominant products.
$(B)$ $p$-Nitroaniline and $m$-nitroaniline are the predominant products.
$(C)$ $HNO_3$ acts as an acid.
$(D)$ $H_2SO_4$ acts as an acid.