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प्रश्न
Why nitric acid is not used in the preparation of hydrogen?
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
Multiple Choice Question
Water gas is a mixture of
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
Correct the following statement:
Hydrogen is separated from CO by passing the mixture through caustic potash solution.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Iron - 3Fe + 4H2O ⇌ ______+ _______ [g]
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
Give a balanced equation for obtaining hydrogen from?
Steam using a metal – and the reaction is reversible.
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
