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प्रश्न
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
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उत्तर
Divalent active metal Ca :
Ca + 2H2O → Ca[OH]2 + H2
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संबंधित प्रश्न
Hydrogen is combustible as well as a supporter of combustion.
Multiple Choice Question
Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
Hydrogen is present abundantly in the ................
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Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
What do you observe when a piece of sodium is dropped into cold water?
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Al + NaOH + ____ → ____ + ____
What do the following symbols represent : 2H and H2.
Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
