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Oxidation State

3 PYQ across 3 exams · 2018–2026 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CDS 2018 → NDA 2024 → CISF 2026
20181 PYQ
CDSQ25
Which one of the following nitrogen oxides has the highest oxidation state of nitrogen?…
20241 PYQ
NDAQ67
What is the oxidation state of Vanadium in V2O5?…
20261 PYQ
CISFQ15
The oxidation state of Chromium is the same in all of the following compounds except one. CrO3, Cr2O3, CrCl3, Cr2(CO3)3 Select the compound …
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