JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 2 April 2025, Shift 2, Chemistry Q69

Question 69 of 75 in this shift, Chemistry question 19 of 25, Section A.

When a concentrated solution of sulphanilic acid and 1-naphthylamine is treated with nitrous acid (273 K) and acidified with acetic acid, the mass (g) of 0.1 mole of product formed is : (Given molar mass in

\mathrm{g\,mol^{-1}}

H : 1, C : 12, N : 14, O : 16, S : 32)

(1) $330$
(2) $33$ Official answer
(3) $66$
(4) $343$

Official answer

Option 2

NTA final key.

Chapter: Amines
Topic: Diazonium Salts
Idea tested: Azo Coupling Reactions

Same idea in other shifts

Asked 11× in all

6 Apr 2024, Shift 1 · Q909.3 g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume…MediumNumerical value
30 Jan 2024, Shift 1 · Q80Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B). [Scheme: aniline ( $\mathrm{C_6H_5NH_2}$ )…EasyDiagram basedHas a figure
30 Jan 2024, Shift 2 · Q79The products A and B formed in the following reaction scheme are respectively Benzene…EasyDiagram basedHas a figure
31 Jan 2024, Shift 2 · Q80The azo-dye (Y) formed in the following reactions is Sulphanilic acid + $\mathrm{NaNO_2}$ + $\mathrm{CH_3COOH}$ $\rightarrow$ X. X +…MediumDiagram basedHas a figure
15 Apr 2023, Shift 1 · Q77Consider the following sequence of reactions: [figure: aniline ( $\mathrm{C_6H_5NH_2}$ )…EasyDiagram basedHas a figure
29 Jul 2022, Shift 1 · Q77[figure: benzenediazonium chloride (benzene ring bearing $\mathrm{N^{+}\equiv NCl^{-}}$ ) + 'A' $\xrightarrow{\mathrm{NaOH}}$ Product…EasyDiagram basedHas a figure
3 Aug 2021, Shift 1 · Q46Sulphanilic acid on diazotisation and then reaction with N,N–dimethylaniline gives which of the following? Mark if their common name is…MediumDiagram basedHas a figure
24 Feb 2021, Shift 2 · Q42The diazonium salt of which of the following compounds will form a coloured dye on reaction with $\beta$ -Naphthol in NaOH ?EasySingle correctHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.