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प्रश्न
Which metal is preferred for the preparation of hydrogen?
from acid?
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उत्तर
Magnesium, aluminum, zinc, and iron.
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संबंधित प्रश्न
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
For laboratory preparation of hydrogen, give the following:
materials used
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid 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.
Complete and balance the following reaction.
Na + H2O →_____________ +___________
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
Select the correct options for the following statement:
The metallic compound formed when a metal above aluminium in the activity series reacts with steam.
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
