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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
Classify the following as chemical or physical change:
Burning of paper and wood
Photosynthesis cannot take place at night.
Classify the following changes as physical or chemical:- photosynthesis in plants
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
True or false
Change of seasons is a non-periodic change.
What are man-made changes ?
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Select the chemical changes from the following list of changes
Rotting of eggs.
Digestion of food is a physical change.
