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प्रश्न
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
पर्याय
argon
helium
neon
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उत्तर
The gas which has now replaced hydrogen in air balloons is helium.
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संबंधित प्रश्न
Give a balanced chemical equation for the reaction.
Multiple Choice Question
Hydrogen is responsible for producing
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
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.
When steam is passed over red-hot iron, magnetic oxide of iron and hydrogen are obtained. “The reaction between steam and red-hot iron is a Reversible Reaction.” What is meant by this statement.
Write balanced equation for the following reaction:
magnesium + dil. hydrochloric acid → ___
What do you observe when a piece of sodium is dropped into cold water?
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
