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प्रश्न
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
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उत्तर
Yes, rust is different from iron. It is a brown powder of iron oxide.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
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Classify the following as chemical or physical change:
Boiling of water to form steam.
Classify the following as chemical or physical change:
Dissolving common salt in water.
Classify the following as physical or chemical change :
Growth of a plant
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
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Change of seasons
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Classify the following as physical or chemical properties
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