मराठी

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

पर्याय

  • 1:1

  • 2:1

  • 4:1

  • 1:2

MCQ
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उत्तर

2:1

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Chemical Reactions and Equations - Exemplar [पृष्ठ ३]

APPEARS IN

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

संबंधित प्रश्‍न

Balance the following equation. Also name the products formed. 

`Mg + O_2         → MgO`


Balance the following equation. Also name the products formed.

`K_2 O +  H_2 O  →  KOH`


Balance the following equation. Also name the products formed.

`N_2 + H_2    →  NH_3`


Balance the following equation stepwise.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]


Balance the following equation:

\[\ce{Na2O + H2O->NaOH}\]


Balance the following equation:

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


Balance the following equation:

\[\ce{ZnO + NaOH->Na2ZnO2 + H2O}\]


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

\[\ce{N2 + 3H2⇌NH3}\]


Balance the following important equation:

(NH4)2SO4 + NaOH → Na2SO4 + H2O + NH3


Balance the following important equation:

Mg3N2 + H2O → Mg(OH)2 + 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:


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

Which one of the following processes involve chemical reactions?


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")`


Which among the following change is exothermic or endothermic in nature?

Dissolution of sodium hydroxide in water


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


What information is not conveyed by a balanced chemical equation?


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


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