Advertisements
Advertisements
प्रश्न
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
Advertisements
उत्तर
physical change.
APPEARS IN
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 —
Tick (√) the correct alternative from the choice given for the following statement
Burning is a
Chemical changes are accompanied by changes in energy.
What role does energy play in initiating a chemical 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.
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.
