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प्रश्न
State whether the following is physical or chemical changes.
burning of wood -
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उत्तर
chemical change,
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संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
State whether the following is physical or chemical changes.
Boiling of an egg —
Tick (√) the correct alternative from the choice given for the following statement
Burning is a
True or false?
During a physical change energy is either given out or absorbed by the system.
Distinguish between the following.
Natural change and man-made change
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
Explain in brief the involvement of energy in physical and chemical changes.
How can a change occur in a substance?
Paper, LPG, CNG petrol, etc, are ______ substances.
Cut vegetables turn brown when exposed to air, this is due to ______.
