Home Chemistry General Organic Chemistry Organic Reactions and their Mechanism When ZnS is boiled with strong nitric acid, …
Chemistry General Organic Chemistry Organic Reactions and their Mechanism Single Correct MCQ
Published on: August 14, 2026

When ZnS is boiled with strong nitric acid, the products are zinc nitrate, sulphuric acid and nitrogen dioxide. What are the changes in the oxidation numbers of Zn, S and N :

A
+ 2, + 4, – 1
B
+ 2, + 6, – 2
C
0, + 4, – 2
D
0, + 8, – 1

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Text Solution

Verified by Experts
The correct answer is:
D

ZnS + HNO3 Zn(NO3)2 + H2SO4 + NO2

(+2) (–2) (+5) (+2) (+6) (+4)

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