Chemistry · p-Block Elements (Group 15-18)

JEE Advanced 2025 — Paper 1 — Question 31

The heating of $\mathrm{NH}_{4} \mathrm{NO}_{2}$ at $60-70^{\circ} \mathrm{C}$ and $\mathrm{NH}_{4} \mathrm{NO}_{3}$ at $200-250^{\circ} \mathrm{C}$ is associated with the formation of nitrogen containing compounds $\mathbf{X}$ and $\mathbf{Y}$ respectively. $\mathbf{X}$ and $\mathbf{Y}$ , respectively, are

Option A:
$\mathrm{N}_{2}$ and $\mathrm{N}_{2} \mathrm{O}$
Correct
Option B:
$\mathrm{NH}_{3}$ and $\mathrm{NO}_{2}$
Option C:
NO and $\mathrm{N}_{2} \mathrm{O}$
Option D:
$\mathrm{N}_{2}$ and $\mathrm{NH}_{3}$

Answer: A

Step-by-step solution

$\mathrm{NH}_{4} \mathrm{NO}_{2} \xrightarrow[60-70^{\circ} \mathrm{C}]{\Delta} \mathrm{N}_{2}+2 \mathrm{H}_{2} \mathrm{O}$

$\mathrm{NH}_{4} \mathrm{NO}_{3} \xrightarrow[200-250^{\circ} \mathrm{C}]{\Delta} \mathrm{N}_{2} \mathrm{O}+2 \mathrm{H}_{2} \mathrm{O}$

Answer key and solution verified before publishing.

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Exam: JEE Advanced 2025
Paper: Paper 1
Subject: Chemistry
Chapter: p-Block Elements (Group 15-18)
Topic: Compounds of Nitrogen - preparation and properties