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प्रश्न
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
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उत्तर
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen because it is a strong oxidising agent and it will produce sulphur dioxide.
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
How do different metals displace hydrogen from water? Explain with the help of equations.
Give a reason for the following:
Zinc granules are used in the lab preparation of hydrogen.
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Select the correct options for the following statement:
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
Account for the following fact:
Potassium and sodium are not used to react with dilute ‘hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
State the reactant added to hydrogen to obtain the respective product in following case.
Water
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Al2(SO4)3 + H2}\]
Give a balanced equation for the following conversion.
\[\ce{MgCl2<-HCl->FeCl2}\]
