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प्रश्न
How did the name 'hydrogen' originate?
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उत्तर
The name 'hydrogen' originated on account of its ability to form water.
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संबंधित प्रश्न
FILL IN THE BLANK
In electrolysis of water, dilute sulphuric acid is added to increase ..................of water.
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Starting from hydrogen gas how would you obtain a neutral liquid.
Give reason for the following:
In the preparation of hydrogen by electrolysis of water – the distilled water used is acidified.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Iron - 3Fe + 4H2O ⇌ ______+ _______ [g]
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.
Ammonia
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen chloride
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Fe3O4 + H2}\]
