Which of the following is/are done to prevent rusting of iron? (a) Coating of…
2024
Which of the following is/are done to prevent rusting of iron? (a) Coating of chromium on iron objects (b) Storing iron objects in water (c) Greasing of iron objects (d) Mixing iron with other elements to produce rust proof alloys Choose the most appropriate answer from the options given below:
- A.
(b) only
- B.
(a), (c) and (d) only
- C.
(b), (c) and (d) only
- D.
(b) and (c) only
- E.
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Correct answer: B
Rusting is a form of corrosion that occurs when iron reacts with oxygen and moisture. To prevent rusting, the surface of iron is protected from contact with air and water, or the iron is modified to make it corrosion-resistant.
The following methods prevent rusting:
(a) Coating of chromium on iron objects ✔️
Forms a protective layer that prevents contact with moisture and oxygen.
(c) Greasing of iron objects ✔️
Creates a barrier between iron and the environment.
(d) Mixing iron with other elements to produce rust-proof alloys ✔️
Produces corrosion-resistant alloys such as stainless steel.
However:
(b) Storing iron objects in water ✖️
Water facilitates rusting and therefore does not prevent corrosion.
Therefore, the correct answer is:
✅ B) (a), (c) and (d) only