हिंदी

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is

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प्रश्न

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is

विकल्प

  • 1:1

  • 2:1

  • 4:1

  • 1:2

MCQ
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उत्तर

2:1

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अध्याय 1: Chemical Reactions and Equations - Exemplar [पृष्ठ ३]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science Exemplar Class 10
अध्याय 1 Chemical Reactions and Equations
Exemplar | Q 11. | पृष्ठ ३

संबंधित प्रश्न

Why it is necessary to balance a chemical equation ?


Balance the following equation. Also name the products formed.

`FeCI_2 + CI_2  →  Fe CI_3`


Name the type of chemical reaction shown by the following equation.

NaOH + HCI → NaCI + H2O


Balance the following equation:

\[\ce{CaO + HCl->CaCl2 + H2O}\]


Balance the following equation:

\[\ce{Al + H2O->Al2O3 + H2}\]


Balance the following equation:

\[\ce{H2S + Cl2->S + HCl}\]


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

\[\ce{2Al + 2H2SO4->Al2(SO4)3 + 3H2}\]


Balance the following important equation:

Pb(NO3)2 + NaCl → NaNO3 + PbCl2 


Balance the following important equation:

FeCl3 + NaOH → NaCl + Fe(OH)3


Balance the following important equation:

Pb(OH)2 + NaOH → Na2PbO2 + H2O  


Balance the following important equation:

NaCl + H2SO4  → Na2SO4 + HCl  


Balance the following important equation:

Pb(NO3)2 + HCl → PbCl2 + HNO3 


Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

  1. Displacement reaction
  2. Precipitation reaction
  3. Combination reaction
  4. Double displacement reaction

Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.

  1. Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773 K to form ammonia gas.
  2. Potassium hydroxide solution is treated with acetic acid to form potassium acetate and water.
  3. Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated H2SO4.
  4. Ethene is burnt in the presence of oxygen to form carbon dioxide, water and release heat and light. 

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

`"Pb"("NO"_3)_2("aq") + 2"Kl"("aq") -> "Pbl"_2(x) + 2"KNO"_3("y")`


A solution of potassium chloride when mixed with silver nitrate solution, an insoluble substance is formed. Write the chemical reaction involved and mention the type of the chemical reaction.


The equation Na + H2O → NaOH + H2 is ______.


Identify the types of reaction mentioned above. Give one example for type in the form of a balanced chemical equation.


Complete and balance the following equation:

\[\ce{NH4Cl + Ca(OH)2 ->}\]


Complete and balance the following equation:

\[\ce{C2H4Br2 + alcoholic KOH ->[\Delta]}\]


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