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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
Complete and balance the following equation:
H2+____________→ 2HCI
Multiple Choice Question
Hydrogen is
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Write balanced equation of the reaction in the preparation of : hydrogen from a solution of potassium hydroxide [other than by electrolysis].
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
