Advertisements
Advertisements
प्रश्न
Chemical reactions may proceed with evolution of heat. Give an example.
Advertisements
उत्तर
Chemical reaction is characterised by evolution of heat:
\[\ce{\underset{\text{carbon}}{C} +\underset{\text{oxygen}}{O2}->\underset{\text{carbon dioxide}}{CO2} + Heat}\]
APPEARS IN
संबंधित प्रश्न
Explain the term with examples.
Endothermic reaction
Give an example of the following chemical changes.
A photochemical reaction involving silver salt.
Name a compound which produces carbon dioxide on heating.
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
Write an Explanation.
Endothermic reaction
Classify the following reaction into Exothermic and Endothermic reactions.
Magnesium ribbon when burned in air, it forms magnesium oxide.
True or False. If false, give the correct answer.
Tarnishing of silver is an example of endothermic change.
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 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 reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is slowly added to water with constant stirring.
