JEE Main · Chemistry · Amines
Synthesis of Iodobenzene
JEE Main asked Synthesis of Iodobenzene 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2025. It belongs to Diazonium Salts, in Amines (Chemistry). The longest wait between two years asking it was 3 years.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2022
- last in 2025
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2022 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Diagram based is the usual form. Skill tested: multi-step.
- Identify compounds in reaction sequence
- Reagent sequence for aromatic conversion
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 3 Apr 2025, Shift 1 · Q66Identify [A], [B] and [C], respectively in the following reaction sequence: [A] --(NaNO, HCl, 273 - 278 K)--> benzenediazonium…EasyDiagram basedHas a figure
- 26 Jul 2022, Shift 2 · Q77The correct sequential order of the reagents for the given reaction is [figure: benzene ring with at the top and…HardSingle correctHas a figure
Shifts: 26 Jul 2022, Shift 2, 3 Apr 2025, Shift 1.
Same topic
Other ideas in Diazonium Salts
Diazonium Salts has 16 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.
- Azo Coupling Reactions11× · 2025
- Sandmeyer Reaction7× · 2024
- Replacement by H or OH5× · 2026
- Reduction to Benzene via Ethanol4× · 2026
- Balz-Schiemann Reaction2× · 2023
- Coupling with Beta-Naphthol2× · 2022
- Deamination Byproducts: Hypophosphorous Acid2× · 2022
- Diazoamino to Aminoazo Rearrangementonce · 2026
- Replacement by Nitro Grouponce · 2026
- Reaction of Tertiary Aryl Amines with HNO2once · 2023
- High-Temperature Decomposition to Phenolonce · 2022
- Resonance Stability of Aryl Diazonium Saltsonce · 2022