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प्रश्न
Why nitric acid is not used in the preparation of hydrogen?
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उत्तर
Nitric acid is a powerful oxidising agent, and the oxygen formed due to its decomposition oxidises hydrogen to give water thus defeating the purpose of the reaction.
3Zn + 8HNO3 → 3Zn(NO3)2 + 4H2O + 2NO
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संबंधित प्रश्न
How do different metals displace hydrogen from water? Explain with the help of equations.
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
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Why are the following metals not used in the lab preparation of hydrogen?
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Fe + HCl →_____________ +___________
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]
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Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{MgO + H2}\]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{NaAlO2 + H2}\]
