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Rusting of iron is a...

Rusting of iron is a

A

Physical change

B

periodic change

C

chemical change

D

fast change

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The correct Answer is:
### Step-by-Step Solution 1. **Understanding Rusting**: Rusting of iron occurs when iron is exposed to moisture and oxygen in the environment. 2. **Chemical Reaction**: When iron reacts with water (H2O) and oxygen (O2) from the air, it undergoes a chemical reaction. This reaction leads to the formation of a new substance known as hydrated ferric oxide (Fe2O3·nH2O), commonly referred to as rust. 3. **Formation of New Compounds**: The key aspect of rusting is that a new compound is formed. Iron (Fe) is transformed into hydrated ferric oxide (rust), indicating that a chemical change has occurred. 4. **Identifying the Type of Change**: Since rusting involves the formation of a new substance and the original iron cannot be recovered by simple physical means, it is classified as a chemical change. 5. **Conclusion**: Therefore, the correct answer to the question "Rusting of iron is a" is that it is a chemical change.
### Step-by-Step Solution 1. **Understanding Rusting**: Rusting of iron occurs when iron is exposed to moisture and oxygen in the environment. 2. **Chemical Reaction**: When iron reacts with water (H2O) and oxygen (O2) from the air, it undergoes a chemical reaction. This reaction leads to the formation of a new substance known as hydrated ferric oxide (Fe2O3·nH2O), commonly referred to as rust. 3. **Formation of New Compounds**: The key aspect of rusting is that a new compound is formed. Iron (Fe) is transformed into hydrated ferric oxide (rust), indicating that a chemical change has occurred. ...
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Rusting of iron is catalyzed by which of the following?

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Knowledge Check

  • Best way to prevent rusting of iron is by

    A
    making iron cathode greasy
    B
    putting in saline water
    C
    both of these
    D
    none of these.

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