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प्रश्न
Give a reason for the following.
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
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उत्तर
Zinc granules are preferred rather than pure zinc as impurity copper present in it has a catalysing effect and speeds up the rate of the reaction.
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
For laboratory preparation of hydrogen, give the following:
materials used
For laboratory preparation of hydrogen, give the following:
method of collection
Which test should be made before collecting hydrogen in a gas jar?
Where does hydrogen occur in a free state?
How did the name 'hydrogen' originate?
Starting from hydrogen gas how would you obtain a basic gas.
Select the correct options for the following statement:
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Fe3O4 + H2}\]
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
