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प्रश्न
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{MgO + H2}\]
विकल्प
dilute acid
dilute alkali
cold water
conc. alkali
boiling water
conc. acid
steam
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उत्तर
Reactant added to get the product:
\[\ce{MgO + H2:Boiling water}\]
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संबंधित प्रश्न
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
How do different metals displace hydrogen from water? Explain with the help of equations.
Which metal is preferred for the preparation of hydrogen?
from acid?
Why nitric acid is not used in the preparation of hydrogen?
Give a reason for the following:
Zinc granules are used in the lab 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 metals not used in the lab. preparation of hydrogen?
aluminium
Select the correct options for the following statement:
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
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 dilute acids
Magnesium - Mg + 2HCl → ______+ _______ [g]
