मराठी

How Can You Obtain Hydrogen from Sodium Hydroxide (Not by Electrolysis).

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प्रश्न

How can you obtain hydrogen from sodium hydroxide [not by electrolysis].

एका वाक्यात उत्तर
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उत्तर

When powdered zinc reacts with sodium hydroxide it produces hydrogen.

\[\ce{Zn + 2NaOH ->\underset{\text{Sodium zincate}}{Na2ZnO2} + H2}\]

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पाठ 6: Study Of The First Element — Hydrogen - Exercise

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विराफ जे. दलाल Simplified ICSE Chemistry [English] Class 9
पाठ 6 Study Of The First Element — Hydrogen
Exercise | Q 1.5

संबंधित प्रश्‍न

Indicate which of the following statement is true and which is false:

The hydrogen molecule is monovalent.


Hydrogen is combustible as well as a supporter of combustion.


 Hydrogen is a good reducing agent: What do you understand by the above statement? Explain with the help of copper oxide as an example.


State four uses of hydrogen: 


Define catalytic hydrogenation.


FILL IN THE BLANK

In nature, hydrogen occurs as a .................. molecule represented as H2


FILL IN THE BLANK

Ammonia is used to make ................


Write the balanced equation and give your observation when the following metal reacts:

Magnesium with steam


Give the balanced equation of the reaction.


With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.

Chlorine acts as an ______ agent.


Give balanced equation for the following conversion:

Iron [III] oxide to iron – using hydrogen.


Give reason for the following:

The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.


Write a correctly balanced equation for the following “word equation”:
calcium + water → calcium hydroxide + hydrogen


When steam is passed over red-hot iron, magnetic oxide of iron and hydrogen are obtained. “The reaction between steam and red-hot iron is a Reversible Reaction.” What is meant by this statement.


Complete and balance the following equations:

Al + NaOH + ____ → ____ + ____


What do the following symbols represent : 2H and H2.


Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.


Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.


Give a reason for the following.

A mixture of hydrogen and chlorine can be separated by passage through a porous pot.


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