Which of the following compounds reacts with aqueous nitrous acid at low temperature to give an oily substance,$N$-nitrosoamine?

What is the correct order of basic strength in substituted amines in an aqueous solution?

Predict the reagents or products $(1)$ to $(5)$ in the following reaction sequence:
$p-Nitrotoluene$ $\xrightarrow{(1)} p-Toluidine$ $\xrightarrow{(CH_3CO)_2O/\text{Pyridine}} p-Acetotoluidide$ $\xrightarrow{HNO_3/H_2SO_4} (2)$ $\xrightarrow{(3)} (4)$ $\xrightarrow{(5)} 3-Nitrotoluene$

Which of the following compounds will not give isocyanide on reaction with $CHCl_3 + KOH$?

What are $X$ and $Y$ in the following reactions?

Write the chemical reaction of aniline with benzoyl chloride and write the name of the product obtained.