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प्रश्न
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
Name the electrode –
- through which the current enters the electrolyte.
- at which hydrogen is liberated.
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उत्तर
- Electrode through which current enters the electrolyte is anode.
- Electrode at which hydrogen is liberated is cathode.
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संबंधित प्रश्न
Give reason for the following:
Though hydrogen is lighter than air it cannot be collected by downward displacement of air.
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
Which test should be made before collecting hydrogen in a gas jar?
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
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?
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Na + H2O →_____________ +___________
Select the correct options for the following statement:
The acid _____ is not Used in the laboratory preparation of hydrogen, using zinc and an acid.
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen chloride
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen sulphide
