हिंदी

Identify the endothermic and exothermic reaction. CaO+HX2O⟶Ca(OH)X2+Heat

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प्रश्न

Identify the endothermic and exothermic reaction.

\[\ce{CaO + H2O -> Ca(OH)2 + Heat}\]

विकल्प

  • Exothermic reaction

  • Endothermic reaction

MCQ
एक शब्द/वाक्यांश उत्तर
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उत्तर

\[\ce{CaO + H2O -> Ca(OH)2 + Heat}\]- Exothermic reaction

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अध्याय 3: Chemical reactions and equations - Exercise [पृष्ठ ४६]

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बालभारती Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
अध्याय 3 Chemical reactions and equations
Exercise | Q 8. c. | पृष्ठ ४६

संबंधित प्रश्न

How will you obtain Ammonia from nitrogen.
Also give balanced equations for the reactions


State the effect of an endothermic reaction.


Give an example of the following chemical changes.

A photochemical reaction involving silver salt.


Why energy is involved in a chemical change?


State the effects of endothermic and exothermic reactions on the surroundings.


Name a compound which produces carbon dioxide on heating.


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 on passage through an electric are given nitric oxide.


Complete the statement by filling in the blank with the correct word:

The element molybdenum used in the reaction of nitrogen with hydrogen at elevated temperatures is an example of a ________.


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.


Give an example with a balanced equation, of the following reaction:

exothermic reaction


Give an example with a balanced equation, of the following reaction:

electrochemical reaction


Differentiate between the following:

Electrolytic decomposition and photochemical decomposition.


True or False. If false, give the correct answer.

Tarnishing of silver is an example of endothermic change.


Assertion: A drop of petrol when touched with finger gives a chill feeling.

Reason: The above phenomenon is an endothermic one.


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

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 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.


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