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प्रश्न
Fill in the blank
An earthquake is a _______ change.
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उत्तर
An earthquake is a non-periodic 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.
burning of wood -
State whether the following is physical or chemical changes.
Melting of wax —
State whether the following is physical or chemical changes.
Boiling of an egg —
True or false?
During a physical change energy is either given out or absorbed by the system.
Melting of solid (wax) is a physical change.
What role does energy play in initiating a chemical change ?
Under which different types can the following changes be classified?
Occurrence of an earthquake.
Fill in the blanks with the appropriate words of the statement given below:
Chemical changes may involve exchange of energy in the form of __________ and _________.
Paper, LPG, CNG petrol, etc, are ______ substances.
