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प्रश्न
Fill in the blank.
The reaction in which energy is evolved is called
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उत्तर
The reaction in which energy is evolved is called exothermic reaction.
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संबंधित प्रश्न
Write short answer.
Name two reversible changes.
Name a chemical change which takes place in presence of:
Write true or false
Rusting of iron is a chemical change.
True or false
Is melting of ice a reversible change?
Write true or false
A natural change can also be a desirable change.
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Name the following.
A form of energy required for a chemical change.
Physical Change: Boiling::Chemical Change: ______.
Give two examples for the following case:
Physical changes which are not reversible
