Hinsberg, carbylamine and HNO2 reactions of drawn amines

14 questions on Hinsberg, carbylamine and HNO2 reactions of drawn amines from the Amines and Aromatic Nitrogen Compounds chapter: 3 NEET level, 7 JEE Main, 4 JEE Advanced. Each one opens with its answer and solution.

• The amine shown is treated with nitrous acid (NaNO2/HCl) at low temperature. Which structure is the main product? NEET level, drawn structure
• The amine shown is warmed with chloroform and alcoholic KOH. Which structure is the foul-smelling product? NEET level, drawn structure
• The amine shown is treated with benzenesulfonyl chloride and aqueous alkali (Hinsberg test). Which observation is correct? NEET level, drawn structure
• The amine shown is treated with NaNO2/HCl at 0-5 degC and the mixture is allowed to warm. Which structure is the main organic product formed together with nitro... JEE Main level, drawn structure
• The amine shown is treated with benzenesulfonyl chloride and excess aqueous NaOH (Hinsberg test). What is observed? JEE Main level, drawn structure
• The primary amine shown is treated with benzenesulfonyl chloride, then with aqueous NaOH. Which structure is the product that dissolves in the alkali? JEE Main level, drawn structure
• The reagent shown is warmed with an alcoholic solution of an amine and KOH. Select all the amines (structures shown) that give a foul-smelling carbylamine produ... JEE Main level, drawn structure
• The tertiary aromatic amine shown is treated with cold NaNO2/HCl. Which structure is the product (green solid as its hydrochloride)? JEE Main level, drawn structure
• The amine shown is treated with cold NaNO2/HCl. Which structure is the major product? JEE Main level, drawn structure
• The compound shown is one of the constitutional isomers of its molecular formula that are amines (stereoisomers not counted). Let x be the number of these isome... JEE Advanced level, drawn structure
• The amine shown is tested with chloroform/KOH, with nitrous acid at 0 degC and with benzenesulfonyl chloride/aqueous alkali. Which set of observations is correc... JEE Advanced level, drawn structure
• The aromatic amine shown is heated with CHCl3/KOH; the foul-smelling product is hydrogenated over Ni to a secondary amine, which is then treated with cold NaNO2... JEE Advanced level, drawn structure
• The amine shown is tested as follows. Select all the correct statements. JEE Main level, drawn structure
• The compound shown has two different nitrogen atoms. Select all the correct statements. JEE Advanced level, drawn structure