Same chapter3 marksDifficulty: Medium
Describe the brown ring test for a nitrate.
Study of Compounds: Nitric Acid
3 marksDifficulty: Medium
Give two examples showing that concentrated nitric acid is a powerful oxidising agent.
Original Khojo Papers practice question — not from a past board paper.
Answer
It oxidises carbon to carbon dioxide, itself being reduced to nitrogen dioxide, and it oxidises sulphur to sulphuric acid. It also oxidises copper to copper nitrate rather than liberating hydrogen.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
This is why nitric acid does not give hydrogen with metals in the way that dilute hydrochloric acid does.
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