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Oxidation

10 PYQ across 4 exams · 1980–2026 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1980 → CDS 2014 → NDA 2023 → GEO 2026
19801 PYQ
CSEQ39
When iron rusts, the weight…
20141 PYQ
CDSQ79
Date of manufacture of food items fried in oil should be checked before buying because oils become rancid due to…
20221 PYQ
CDSQ8
Which one of the following is not an example of an oxidation reaction ?…
20233 PYQs
CDSQ11
Consider the following statements regarding burning of magnesium ribbon in air : 1. White powder of MgO is formed. 2. It is an example of co…
CDSQ14
Which one of the following is not an oxidation reaction?…
NDAQ73
Browning of the chopped apple can be minimized by :…
20241 PYQ
NDAQ116
Which one among the following is an example of oxidation reaction ?…
20251 PYQ
NDAQ109
What happens when the fat and oil containing food materials are left outside for a long time?…
20262 PYQs
GEOQ73
Consider the following statements regarding oxidation : I. There is loss of hydrogen. II. There is gain of oxygen. III. There is gain of ele…
NDAQ80
Which of the following are oxidation reactions? I. Rusting of iron II. Burning of fuel III. Rancidity of oils and fats IV. Browning of fruit…
Related concepts — explore their timelines too
Redox reactionsCombustionChemical reactions
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