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प्रश्न
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
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उत्तर
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ...................soluble in water.
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Fe + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Give reason:
A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [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.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{MgO + H2}\]
Give a balanced equation for the following conversion.
\[\ce{MgCl2<-HCl->FeCl2}\]
