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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
Tick (√) the correct alternative from the choice given for the following statement
When sugar is heated, its colour changes into
What role does energy play in initiating a chemical change ?
Distinguish between the following.
Natural change and man-made change
Explain in brief the involvement of energy in physical and chemical changes.
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 _________.
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
Paper, LPG, CNG petrol, etc, are ______ substances.
______ is the process in which something becomes different from what it was earlier.
Cut vegetables turn brown when exposed to air, this is due to ______.
