Regarding the properties of HNO 3 , which of the following …

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Compounds of Nitrogen and Phosphorus Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

Regarding the properties of HNO 3 , which of the following statements are correct ?

NO 3 – act as a ligand through the nitrogen atom

In HF liquid HNO 3 behave as a base

The oxidising action of HNO 3 is inhibited in the presence of urea

HNO 3 gives positive brown ring test

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(b, c, d) NO 3 – is a poor ligand coordinating through oxygen atom forming nitrato complex

In the presence of strong proton donor, HF, HNO 3 behave as proton acceptor (base)

2HF + HNO 3 ⎯→ H 3 O + + NO 2 + + 2F – HNO 3 act as an oxidising agent due to traces of HNO 2 or NO 2 . In the presence of urea, HNO 2 destroyed.

HNO 3 or NO 3

– produce brown ring complex, [Fe(H 2 O) 5 NO] 2+ in acidified FeSO 4 solution.

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