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Iron articles are shiny when new but later get coated with a powder:
AReddish brown
BBluish brown
CGreenish brown
DYellowish brown
Answer & Solution
Correct answer: A. Reddish brown
1. This happens when they are left for some time.
2. The process is called corrosion.
3. The powder is reddish brown.
_Source: NCERT Class 10 Science, Ch 1 'Chemical Reactions and Equations'_
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