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प्रश्न
State which type of chemical reaction proceeds with evolution of heat energy.
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उत्तर
Exothermic reactions
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In a................ reaction heat energy is absorbed.
What do you observe? When
Lead nitrate is heated.
Give an example of the following chemical changes.
An exothermic and an endothermic reaction involving carbon as one of the reactants.
Define exothermic and endothermic changes. Give two example in each case.
State which type of chemical reaction proceeds with the absorption of heat energy.
Give a balanced equation for the following type of reaction:
A catalytic, reversible, exothermic reaction.
Give examples of the endothermic process.
Give a scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Give scientific reasons.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Give a scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
