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प्रश्न
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
उत्तर
By adding aluminium powder in cone, sodium hydroxide.
\[\ce{2Al + 6NaOH ->\underset{\text{sodium aluminium}}{2Na3AlO3} + 3H2}\]
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संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
Hydrogen is combustible as well as a supporter of combustion.
Indicate which of the following statement is true and which is false:
Hydrogen gas is easily liquefiable.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Give a balanced chemical equation for the reaction.
Multiple Choice Question
Hydrogen is responsible for producing
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
Hydrogen is present abundantly in the ................
FILL IN THE BLANK
Ammonia is used to make ................
Give the balanced equation of the reaction.
Choose the correct option:
The composition of the nucleus of deuterium is
Choose terms from the options given in brackets to complete this sentence.
A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.
(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).
Correct the following statement:
Hydrogen is dried by passing it through conc. H2SO4.
Give balanced equation for the following conversion:
Water gas to hydrogen – industrially.
Give balanced equation for the following conversion:
Nitrogen to a basic gas – using hydrogen.
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 |
Give a chemical test to distinguish between the following gases:
Hydrogen and oxygen
Name a gas which burns in air or oxygen forming water.
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.
