Chemistry · Practical Inorganic chemistry (Qualitative Analysis)

JEE Main 2025 — 23 January, Morning Shift — Question 41

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II :

Statement I : In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds.

Statement II : The sodium fusion extract of an organic compound having N and S gives prussian blue colour with FeSO4\mathrm{FeSO}_{4} and Na4[Fe(CN)6]\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]

In the light of the above statements, choose the correct answer from the options given below

  1. Option A:

    Both Statement I and Statement II are true

  2. Option B:

    Both Statement I and Statement II are false

  3. Option C:

    Statement I is false but Statement II is true

  4. Option D:

    Statement I is true but Statement II is false

    Correct

Answer: D

Step-by-step solution

The sodium fusion extract of organic compound having N& S\mathrm{N} \& \mathrm{~S} gives blood red colour with

FeSO4\mathrm{FeSO}_{4} and Na4[Fe(CN)6]\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]

Answer key and solution verified before publishing.

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Exam
JEE Main 2025
Subject
Chemistry
Chapter
Practical Inorganic chemistry (Qualitative Analysis)
Topic
Introduction to Qualitative Analysis + Preliminary Tests - Dry Tests
Given below are two statements : one is labelled as Statement I and… | JEE Main 2025 PYQ with Solution · DhiX AI