Principles Related to Practical Chemistry · Question 52

JEE Main 2025 (Online) 29th January Morning ShiftMCQEasy📈 Topic in 39% papers+4−1

The steam volatile compounds among the following are : Choose the correct answer from the options given below :

(B) and (D) Only
(A), (B) and (C) Only
(A) and (B) Only
(A) and (C) Only

Answer

(3) (A) and (B) Only

Solution

As per NCERT, o-nitrophenol is steam volatile due to intramolecular hydrogen bonding, while p-nitrophenol is less volatile due to intermolecular hydrogen bonding (association).

(A) o-Nitrophenol: –OH and -NO2 are ortho intramolecular H-bond steam volatile

(B) o-Nitroaniline: –NH2 and -NO2 are ortho intramolecular H-bond steam volatile

(C) and (D) are both 3-aminophenol: –OH and –NH2 are meta, so no intramolecular H-bond; strong intermolecular H-bonding not steam volatile

(A) and (B) only

Answer: (3)

JEE Main 2025 (Online) 29th January Morning Shift

Keep practising — Principles Related to Practical Chemistry

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below

Statement I is false but Statement II is true
Statement I is true but Statement II is false
Both Statement I and Statement II are true
Both Statement I and Statement II are false

JEE Main 2025 (Online) 28th January Morning Shift

The metal ion whose electronic configuration is not affected by the nature of the ligand and which gives a violet colour in non-luminous flame under hot condition in borax bead test is