NDA 2026
- Exam
- NDA
- Year
- 2026
- Subject
- General Ability
- Chapter
- General Science
NDA 2026 · General Ability · General Science
Which of the following are oxidation reactions? I. Rusting of iron...
Which of the following are oxidation reactions?
I. Rusting of iron
II. Burning of fuel
III. Rancidity of oils and fats
IV. Browning of fruits
Select the correct answer using the code given below.
I. Rusting of iron
II. Burning of fuel
III. Rancidity of oils and fats
IV. Browning of fruits
Select the correct answer using the code given below.
Options
- AI, II and III only
- BI, II and IV only
- CIII and IV only
- DI, II, III and IV
Correct answer
D. I, II, III and IV
Step-by-step solution
Rusting of iron involves the reaction of iron with oxygen and moisture to form hydrated iron(III) oxide, which is an oxidation process.
Burning of fuel is a combustion reaction where the fuel reacts with oxygen, making it an oxidation reaction.
Rancidity of oils and fats occurs due to the aerial oxidation of unsaturated fats and oils.
Browning of fruits is caused by the enzymatic oxidation of phenolic compounds present in the fruit when exposed to air.
Therefore, all the given processes are oxidation reactions.
Answer: I, II, III and IV
Burning of fuel is a combustion reaction where the fuel reacts with oxygen, making it an oxidation reaction.
Rancidity of oils and fats occurs due to the aerial oxidation of unsaturated fats and oils.
Browning of fruits is caused by the enzymatic oxidation of phenolic compounds present in the fruit when exposed to air.
Therefore, all the given processes are oxidation reactions.
Answer: I, II, III and IV