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प्रश्न
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
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उत्तर
By adding aluminium powder in cone, sodium hydroxide.
\[\ce{2Al + 6NaOH ->\underset{\text{sodium aluminium}}{2Na3AlO3} + 3H2}\]
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संबंधित प्रश्न
Hydrogen is combustible as well as a supporter of combustion.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Hydrogen is a good reducing agent: What do you understand by the above statement? Explain with the help of copper oxide as an example.
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
Why is hydrogen called a reducing agent? Give chemical equation to support your answer ?
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold water
Correct the following statement:
Hydrogen is dried by passing it through conc. H2SO4.
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen is a combustible gas.
Give balanced equation for the following conversion:
Iron [III] oxide to iron – using hydrogen.
Give balanced equation for the following conversion:
Nitrogen to a basic gas – using hydrogen.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
Match the statements in List I with the appropriate answer in List II.
| List I | List II |
| 1. An atom of hydrogen | A: Chromic oxide |
| 2. A strong oxidising agent | B: Ammonia |
| 3. A promoter used in Bosch process | C: Iron |
| 4. A chemical used in the manufavture of fertilizers | D: One electron |
| 5. The catalyst used in production of a basic gas from nitrogen. | E: Dilute nitric acid |
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
How can you obtain hydrogen from sodium hydroxide [not by electrolysis].
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
What do you observe when a piece of sodium is dropped into cold water?
What do the following symbols represent : 2H and H2.
Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.
