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प्रश्न
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
विकल्प
Na, K, Li
Mg, Ca, Ba
Al, Zn, Pb
Fe, Cu, Ag
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उत्तर
Al, Zn, Pb
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संबंधित प्रश्न
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
Why nitric acid is not used in the preparation of hydrogen?
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric acid would you choose? Explain why you would not use the acids you reject.
Why are the following metal not used in the lab. preparation of hydrogen?
iron
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 metal by reduction of its heated oxide.
Select the correct options for the following statement:
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
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.
\[\ce{CO + H2<-H2O->CO2 + H}\]
