JEE Main 2026 — Amines Question with Solution
JEE Main 2026 (21 January Shift 1)
Question
A hydrocarbon ' on reaction with HCl gives an optically active compound ' Q ' which on reaction with one mole of ammonia gives compound ' . ' on diazotization followed by hydrolysis gives ' S '.
Identify and S.
Identify and S.
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
For Q () to be optically active, it must have a chiral center.
P () = but-2-ene ()
P + HCl → Q: (2-chlorobutane, chiral at C-2)
Q + → R: 2-chlorobutane + (2-aminobutane)
R → diazotization → hydrolysis → S: 2-aminobutane diazonium salt (butan-2-ol)
P () = but-2-ene ()
P + HCl → Q: (2-chlorobutane, chiral at C-2)
Q + → R: 2-chlorobutane + (2-aminobutane)
R → diazotization → hydrolysis → S: 2-aminobutane diazonium salt (butan-2-ol)
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This is a previous-year question from JEE Main 2026, covering the Amines chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.