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प्रश्न
Why are the following metals not used in the lab. preparation of hydrogen?
sodium
उत्तर
Sodium reacts violently with acid.
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संबंधित प्रश्न
Name the following:
Two metals which give hydrogen with cold water.
For laboratory preparation of hydrogen, give the following:
method of collection
Give a reason for the following:
Zinc granules are used in the lab preparation of hydrogen.
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Why are the following metal not used in the lab. preparation of hydrogen?
iron
Complete and balance the equation:
[General method]
Reactions of metals with steam
Aluminium - 2Al + 3H2O → ______+ _______ [g]
Account for the following fact:
Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilutes sulphuric acid.
State the reactant added to hydrogen to obtain the respective product in following case.
Ammonia
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 balanced equation for the following conversion.
\[\ce{NH3<-H2->H2S}\]
