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


What do you observe when ammonium chloride is dissolved in water.


MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Heat energy is evolved in these reactions

  1. Thermal decomposition reactions
  2. Exothermic reactions
  3. Endothermic reactions
  4. None of these

Explain the term with examples.

Endothermic reaction  


Identify the endothermic and exothermic reaction.

HCl + NaOH → NaCl + H2O + heat


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.


Name a carbonate which do not decompose on heating.


Name a compound which produces carbon dioxide on heating.


Give an example of the following chemical changes.

An exothermic and an endothermic reaction involving carbon as one of the reactants.

 


State the following reaction whether heat is evolved or absorbed – 

water is added to quicklime


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.


Differentiate between the following:

A catalyst and a promoter.


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

exothermic 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.


Differentiate between the following:

Electrolytic decomposition and photochemical decomposition.


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

Reason: The above phenomenon is an endothermic one.


The Dissolution of glucose in water is also an ______ change.


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 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.


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