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प्रश्न
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Aluminium - 2Al + 2NaOH + 2H2O → ______ + _______ [g]
2Al + 2KOH + 2H2O → _____ + _____ [g]
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उत्तर
Aluminium - 2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2 [g]
2Al + 2KOH + 2H2O → 2KAlO2 + 3H2 [g]
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संबंधित प्रश्न
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Which metal is preferred for the preparation of hydrogen?
from water?
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Sodium - 2Na + 2H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Lead - Pb + 2NaOH → ______ + _______ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Fe3O4 + H2}\]
Give a reason for the following.
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
