Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202622 JanuaryMorning Shift
Exam
JEE Main
Year
2026
Date
22 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Amines

JEE Main 2026 · 22 January · Morning Shift · Chemistry · Amines

' A ' is a neutral organic compound ( M. F: C_ 8 H_ 9 ON ). On...

' A ' is a neutral organic compound (M.F:C8H9ON\mathrm{M}. \mathrm{F}: \mathrm{C}_{8} \mathrm{H}_{9} \mathrm{ON}). On treatment with aqueous Br2/HO(−)\mathrm{Br}_{2} / \mathrm{HO}^{(-)}, ' A ' forms a compound ' B ' which is soluble in dilute acid. ' B ' on treatment with aqueous NaNO2/HCl\mathrm{NaNO}_{2} / \mathrm{HCl}\left(0-5^{\circ} \mathrm{C}\right)producesacompound′C′whichontreatmentwithproduces a compound ' C ' which on treatment with\mathrm{CuCN} / \mathrm{NaCN}produces′D′.Hydrolysisof′D′produces′E′whichisalsoobtainablefromthehydrolysisof′A′.′E′ontreatmentwithacidifiedproduces ' D '. Hydrolysis of ' D ' produces ' E ' which is also obtainable from the hydrolysis of ' A '. ' E ' on treatment with acidified\mathrm{KMnO}_{4}produces′produces 'F′.′'. 'F ' contains two different types of hydrogen atoms. The structure of ' A ' is' A ' is a neutral organic compound ( M. F: C_ 8 H_ 9 ON ). On treatment with aqueous Br_ 2 / HO^ (-) , ' A ' forms a' A ' is a neutral organic compound ( M. F: C_ 8 H_ 9 ON ). On treatment with aqueous Br_ 2 / HO^ (-) , ' A ' forms a' A ' is a neutral organic compound ( M. F: C_ 8 H_ 9 ON ). On treatment with aqueous Br_ 2 / HO^ (-) , ' A ' forms a' A ' is a neutral organic compound ( M. F: C_ 8 H_ 9 ON ). On treatment with aqueous Br_ 2 / HO^ (-) , ' A ' forms a

Options

  1. AThe reagent, from the following, which converts benzoic acid to benzaldehyde in one step is
  2. BThe reagent, from the following, which converts benzoic acid to benzaldehyde in one step is
  3. CThe reagent, from the following, which converts benzoic acid to benzaldehyde in one step is
  4. DThe reagent, from the following, which converts benzoic acid to benzaldehyde in one step is

Correct answer

C. The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is

Step-by-step solution

Compound A undergoes bromination with aqueous Br₂/HO⁻ to form B, which is soluble in dilute acid, indicating an amino group is present.
B undergoes diazotization with NaNO₂/HCl at 0-5°C to form diazonium compound C.
The diazonium compound is then treated with CaCN/NaOH to form nitrile compound D.
Hydrolysis of D produces carboxylic acid E.
When A is treated with acidified KMnO₄, it produces F containing two different types of hydrogen atoms.

This reaction sequence is characteristic of anthranilic acid (2-aminobenzoic acid), where the amino group directs bromination to the para position, and subsequent reactions proceed through the diazonium intermediate.

The structure shown in option (3), which is 2-aminobenzoic acid, fits all these transformations.
Practice Amines on Quantrex Academy →

More from Amines

Match the major products obtained in the reactions given in List-I with the corresponding… JEE Advanced 2026In the following reaction sequence, P , Q , S and T are the major products. The correct… JEE Advanced 2026Passage: Consider the following reaction sequence in which J , K , L and M are the major… JEE Advanced 2026Which statements are True? A. In Hoffmann bromamide degradation, 4 moles of NaOH and 2… JEE Main 2026Consider the following organic reaction sequence. Choose the final product (X) from the… JEE Main 2026The number of compounds from the following which can undergo reaction with Br _2 /KOH… JEE Main 2026Consider the following sequence of reactions. The percentage of nitrogen in the yellow… JEE Main 2026Given below are two statements : Statement I: Heating benzamide with bromine in an… JEE Main 2026 Full Amines list All JEE Main PYQs