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प्रश्न
State how hydrogen occurs in the free state. Name three compounds containing hydrogen in the combined state.
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उत्तर
- In free state : In traces in the earth’s crust and atmosphere and in volcanic gases. It is also found in huge amount in the interior of the sun.
- In combined state : In organic compounds, plant and animals, in acids, in water.
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संबंधित प्रश्न
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In electrolysis of water, dilute sulphuric acid is added to increase ..................of water.
How do different metals displace hydrogen from water? Explain with the help of equations.
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the metals copper, zinc, magnesium or sodium would be the most suitable?
Complete and balance the following reaction.
Mg + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Select the correct options for the following statement:
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Lead - Pb + 2NaOH → ______ + _______ [g]
Name an element whsich reacts violently with water at room temperature.
Give a balanced equation for obtaining hydrogen from?
Steam using a trivalent metal
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{MgO + H2}\]
