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प्रश्न
Write an Explanation.
Endothermic reaction
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उत्तर
The chemical reactions which are accompanied by absorption of heat are called endothermic reactions.
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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.
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.
Give an example of the following chemical changes.
A reaction involving blue solution.
Why energy is involved in a chemical change?
State the effects of endothermic and exothermic reactions on the surroundings.
Name a nitrate which produces oxygen as the only gas.
State which type of chemical reaction proceeds with evolution of heat energy.
State the following reaction whether heat is evolved or absorbed –
water is added to quicklime
Give a balanced equation for the following type of reaction:
A catalytic, reversible, exothermic reaction.
Chemical reactions may proceed with evolution of heat. Give an example.
Give an example with a balanced equation, of the following reaction:
exothermic reaction
Give an example with a balanced equation, of the following reaction:
endothermic reaction
Supply of energy may be required to initiate a reaction. State the different forms with a suitable example of reactions initiated by the supply of energy.
Mention any two exothermic reactions.
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
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 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.
