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प्रश्न
What do you observe when ammonium chloride is dissolved in water.
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उत्तर
Dissolution of ammonium chloride in water is an endothemic reaction in which heat energy is absorbed.
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In a................ reaction heat energy is absorbed.
Identify the endothermic and exothermic reaction.
\[\ce{2KClO_{3(s)}->[\Delta] 2KCl_{(s)} + 3O2}\]
Give an example of the following chemical changes.
A reaction involving blue solution.
Explain the term energy changes in a chemical change or reaction.
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
Select the correct answer from the options given below:
State the gaseous product formed, when
Two gases one of them neutral combines by absorption of light energy.
Classify the following reaction into Exothermic and Endothermic reactions.
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Give examples for the exothermic process.
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
Complete the following table:
| Chemical Reactions | Name reaction type |
| \[\ce{C(s) + O2(g) -> CO2(g)}\] | (a) ________ |
| \[\ce{Zn(s) + CuSO4(aq) ->}\] (b) _________ | Displacement reaction |
| \[\ce{2Cu(s) + O2(g) ->[heat] 2CuO(s)}\] | (c) _________ |
| \[\ce{C(s) + 2H2(g) -> CH4(g)}\] | (d) _________ |
| \[\ce{CaO(s) + H2O(l) -> Ca(OH)2(aq) + heat}\] | (e) _________ |
| \[\ce{CaCO3(s) + Heat ->}\] (f) _________ | Endothermic Reaction |
