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प्रश्न
State the effects of endothermic and exothermic reactions on the surroundings.
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उत्तर
Exothermic reactions are spontaneous and warm their surroundings with the release of heat energy.
Endothermic reactions absorb heat energy from their surroundings and cause their surroundings to cool down.
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संबंधित प्रश्न
Define exothermic reactions. Give two examples of each.
Define endothermic reactions. Give two examples of each.
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
State which type of chemical reaction proceeds with evolution of heat energy.
State the following reaction whether heat is evolved or absorbed –
Two neutral gases combine to give a basic gas.
Give an example of an endothermic reaction.
Explain the term energy changes in a chemical change or reaction.
Give examples of the endothermic process.
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.
