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प्रश्न
Complete the following statement.
On heating, hydrated copper sulphate changes its colour from ________ to __________.
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उत्तर
On heating, hydrated copper sulphate changes its colour from Blue to white.
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संबंधित प्रश्न
Define endothermic reactions. Give two examples of each.
Give scientific reasons.
While preparing dil. Sulphuric acid from concentrated conc. sulphuric acid in the laboratory the concentrated sulphuric acid is, add slowly to water with constant stirring.
Name a compound which produces carbon dioxide on heating.
State which type of chemical reaction proceeds with evolution of heat energy.
State which type of chemical reaction proceeds with the absorption of heat energy.
Chemical reactions may proceed with absorption of heat. Give an example.
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
Assertion: A drop of petrol when touched with finger gives a chill feeling.
Reason: The above phenomenon is an endothermic one.
The Dissolution of glucose in water is also an ______ change.
Give examples for the exothermic process.
