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प्रश्न
The rusting of an iron object is called :
पर्याय
corrosion and it is a physical as well as a chemical change
dissolution and it is a physical change
corrosion and it is a chemical change
dissolution and it is a chemical change
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उत्तर
corrosion and it is a chemical change
Rusting of iron takes place in the presence of air (O2) and water vapour. Action of air and moisture on iron converts it to its oxide. This process is called corrosion and it leads to the formation of a new compound. Therefore, it is a chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
Write short answer.
Give two examples of periodic changes
Write short answer.
What are man-made changes ?
State whether the following is physical or chemical changes.
mixing oil with water —
State whether the following is physical or chemical changes.
cutting wood into small pieces —
State whether the following is physical or chemical change.
Digestion of food —
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
Classify the following as a physical or a chemical change.
Butter getting rancid
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Give the reason why the following is considered as chemical changes.
Copper carbonate on heat gives copper oxide and carbon dioxide.
