Statement I: Sodium hydride can be used as an oxidising agent. Statement II: The lone pair of electrons on nitrogen in…
Chemical Bonding · Class 11 · JEE Main Previous Year Question
Statement I: Sodium hydride can be used as an oxidising agent.
Statement II: The lone pair of electrons on nitrogen in pyridine makes it basic.
Choose the CORRECT answer:
- a
Both Statement I and Statement II are false
- b
Statement I is true but Statement II is false
- c✓
Statement I is false but Statement II is true
- d
Both Statement I and Statement II are true
Statement I is false but Statement II is true
🧠 Evaluate both statements independently on their chemical accuracy.
🗺️ Statement I — "Sodium hydride can be used as an oxidising agent":
NaH is an ionic compound: .
The hydride ion () is a strong reducing agent — it donates electrons (acts as a Lewis base and reductant). NaH cannot act as an oxidising agent (it doesn't accept electrons from other species in any normal reaction).
Statement I is FALSE ✗
Statement II — "The lone pair on nitrogen in pyridine makes it basic":
In pyridine, N is sp² hybridized. The lone pair occupies an sp² orbital in the plane of the ring (not involved in π-system) → this lone pair is available to donate to a proton or Lewis acid.
This makes pyridine a Lewis/Brønsted base → Statement II is TRUE ✓
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