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प्रश्न
State whether the following is physical or chemical changes.
lightning —
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उत्तर
chemical change,
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संबंधित प्रश्न
What are reversible and irreversible changes ? Give one example for each.
State whether the following is physical or chemical changes.
mixing oil with water —
Name two reversible changes.
State the various conditions that favour the process of evaporation.
Make a list of different types of changes with example.
Classify the following as a physical or a chemical change.
Boiling of water
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Give three reasons why melting of wax, is considered a physical change while burning of a candle, a chemical change.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
Digestion of food is a physical change.
