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प्रश्न
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Ca(OH)2 + H2}\]
पर्याय
dilute acid
dilute alkali
cold water
conc. alkali
boiling water
conc. acid
steam
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उत्तर
Reactant added to get the product:
\[\ce{Ca(OH)2 + H2:Cold water}\]
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ...................soluble in water.
Multiple Choice Question
Water gas is a mixture of
Which metal is preferred for the preparation of hydrogen?
from acid?
For laboratory preparation of hydrogen, give the following:
chemical equation
Where does hydrogen occur in a free state?
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A monovalent metal
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Select the correct options for the following statement:
A foul smelling gas formed when hydrogen reacts with a molten non-metal, is ___.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Magnesium - Mg + H2O → ______+ _______ [g]
Account for the following fact:
Potassium and sodium are not used to react with dilute ‘hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
