Effects of Oxidation in Daily Life (Corrosion, Rancidity)Practice Questions & MCQs
Practice Effects of Oxidation in Daily Life (Corrosion, Rancidity) questions from Chemical Reactions and Equations (Class 10 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Effects of Oxidation in Daily Life (Corrosion, Rancidity)Quiz - Solve & Score
Q1. Which of the following prevents rusting by sacrificial protection (NCERT)?
- A.painting the surface
- B.keeping it in dry air
- C.connecting a more reactive metal like zinc or magnesium
- D.greasing the surface
Answer: C. connecting a more reactive metal like zinc or magnesium
Q2. Which is NOT a method to prevent rusting of iron?
- A.Storing iron in moist air
- B.Galvanising with zinc
- C.Applying grease or oil
- D.Painting the surface
Answer: A. Storing iron in moist air
Quick parse - a typical chemistry numerical. We are after the quantity the stem asks for. Tool of choice - hence the answer = Storing iron in moist air. Rearrange it for the unknown before substituting. Common-sense check: corrosion of iron: 4Fe + 3O2 + 2xH2O -> 2Fe2O3.xH2O (hydrated ferric oxide). Lock in option A) Storing iron in moist air. Trap-watch: option B) 'Galvanising with zinc' fails since Zinc gives sacrificial protection; option C) 'Applying grease or oil' is wrong because Oil forms a protective barrier.
Q3. Which everyday practice does NOT slow rancidity?
- A.Frying food repeatedly in the same exposed oil
- B.Vacuum packing
- C.Adding BHA/BHT antioxidants
- D.Refrigerating fried snacks
Answer: A. Frying food repeatedly in the same exposed oil
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