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प्रश्न
Give an example of the following chemical changes.
An exothermic and an endothermic reaction involving carbon as one of the reactants.
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उत्तर
Exothermic reaction:
When carbon burns in oxygen to form carbon dioxide, a lot of heat is produced.
C + O2 → CO2 + Heat
Endothermic reaction:
When carbon is heated with sulphur at high temperature, liquid carbon disulphide is formed.
\[\ce{C + 2S ->[\Delta] CS2}\]
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संबंधित प्रश्न
State the effects of endothermic and exothermic reactions on the surroundings.
Name a compound which produces carbon dioxide on heating.
Define exothermic and endothermic changes. Give two example in each case.
State which type of chemical reaction proceeds with evolution of heat energy.
Complete the statement by filling in the blank with the correct word:
The reaction of coke with steam to give water gas is an example of an __________ reaction.
Complete the statement by filling in the blank with the correct word:
The reaction of hydrogen burning in oxygen to give a neutral liquid is an example of ________ reaction.
Respiration is a ______ change.
The Dissolution of glucose in water is also an ______ change.
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 added slowly to water with constant stirring.
