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प्रश्न
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
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उत्तर
physical change.
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संबंधित प्रश्न
What do you observe when :
solid ammonium chloride is heated
State whether the following is physical or chemical changes.
Boiling of an egg —
Fill in the blank
An earthquake is a _______ change.
Melting of solid (wax) is a physical change.
Under which different types can the following changes be classified?
Conversion of milk into yoghurt.
Under which different types can the following changes be classified?
Bursting of a cracker.
Under which different types can the following changes be classified?
Occurrence of an earthquake.
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
Give reason.
While purchasing canned food, its expiry date should be checked.
How can a change occur in a substance?
