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प्रश्न
Which test should be made before collecting hydrogen in a gas jar?
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उत्तर
Test: Collect some amount of gas in a test tube and take it to a flame.
If the gas burns quietly, then there is no more air in the flask.
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संबंधित प्रश्न
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
How did the name 'hydrogen' originate?
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A monovalent metal
Why are the following metal not used in the lab. preparation of hydrogen?
iron
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.
Select the correct options for the following statement:
The acid _____ is not Used in the laboratory preparation of hydrogen, using zinc and an acid.
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
