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प्रश्न
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
उत्तर
Periodic change
संबंधित प्रश्न
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
Chemical changes are accompanied by changes in energy.
Distinguish between the following.
Natural change and man-made change
Under which different types can the following changes be classified?
Bursting of a cracker.
Give reason.
While purchasing canned food, its expiry date should be checked.
Explain in brief the involvement of energy in physical and chemical changes.
Paper, LPG, CNG petrol, etc, are ______ substances.
______ is the process in which something becomes different from what it was earlier.
What is the change?
