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प्रश्न
Hydrogen is ______ than air.
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उत्तर
Hydrogen is lighter than air.
संबंधित प्रश्न
Why nitric acid is not used in the preparation of hydrogen?
Why are the following metals not used in the lab. preparation of hydrogen?
aluminium
Complete and balance the following reaction.
Mg + H2O →_____________ +___________
Starting from hydrogen gas how would you obtain a basic gas.
Select the correct options for the following statement:
The acid _____ is not Used in the laboratory preparation of hydrogen, using zinc and an acid.
Select the correct options for the following statement:
The product formed on combustion of hydrogen in air is ___.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Magnesium - Mg + 2HCl → ______+ _______ [g]
Give a balanced equation for obtaining hydrogen from?
Steam using a trivalent metal
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen sulphide
Give a balanced equation for the following conversion.
\[\ce{MgCl2<-HCl->FeCl2}\]
