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Complete the missing component/variable given as x and y in the following reactions CaCOCaOsCOgCaCO2(s)→xCaO(s)+CO2(g) - Science

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प्रश्न

Complete the missing component/variable given as x and y in the following reactions

`"CaCO"_2(s)overset(x)(->) "CaO"("s") + "CO"_2("g")`

एक पंक्ति में उत्तर
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उत्तर

 x = heat

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अध्याय 1: Chemical Reactions and Equations - Exemplar [पृष्ठ ५]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
अध्याय 1 Chemical Reactions and Equations
Exemplar | Q 21. (d) | पृष्ठ ५

संबंधित प्रश्न

What is a chemical equation ?


What are the limitations of a chemical equation ?


Differentiate between:

Reactants and products.


Write a balanced chemical equation for the following word equation:

Iron + Chlorine → Iron (III) chloride


Balance the following equation. Also name the products formed.

Ag +S          →   `Ag_2 S`


Balance the following equation. Also name the products formed.

`CO + O_2      → CO_2`


Differentiate between a ‘word equation’ and a ‘molecular equation’ with a suitable example.


Balance the following equation:

\[\ce{Fe + H2O⇌Fe3O4 + H2}\]


Underline the incorrectly balanced compound equation and rewrite the correct equation.

\[\ce{PbO2 + 4HCl->PbCl2 + H2O + Cl2}\]


Balance the following important equation:

NaOH + H2SO4 → Na2SO4 + H2


Balance the following important equation:

CuSO4 + NaOH → Na2SO4 + Cu(OH)2  


Balance the following important equation:

\[\ce{Al(OH)3 -> Al2O3 + H2O}\]


Balance the following important equation:

Al + Cl2  → AlCl3 


Balance the following important equation:

NH3 + O2 → NO + H2O (catalytic oxidation of  NH3


When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:


Which of the following correctly represents a balanced chemical equation?


Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form a solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?

  1.  It is an endothermic reaction
  2.  It is an exothermic reaction
  3. The pH of the resulting solution will be more than seven
  4. The pH of the resulting solution will be less than seven

A magnesium ribbon is burnt in oxygen to give a white compound ‘X’ accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound ‘Y’.

  1. Write the chemical formulae of X and Y.
  2. Write a balanced chemical equations when X and Y are dissolved in water.

What are the points to be followed while balancing a chemical equation?


Write the balanced equation for the following chemical reaction.

\[\ce{Hydrogen + Chlorine -> Hydrogen chloride}\]


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