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प्रश्न
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
विकल्प
He
Na
F
O
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उत्तर
Na
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संबंधित प्रश्न
Hydrogen is combustible as well as a supporter of combustion.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
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Helium replaced hydrogen in weather observation balloons?
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MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
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FILL IN THE BLANK
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