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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
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
For laboratory preparation of hydrogen, give the following:
chemical equation
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Complete and balance the following reaction.
Fe + HCl →_____________ +___________
Select the correct options for the following statement:
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
Select the correct options for the following statement:
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Lead - Pb + 2NaOH → ______ + _______ [g]
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.
\[\ce{Ca(OH)2 + H2}\]
Give a reason for the following.
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
