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प्रश्न
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
उत्तर
Divalent active metal Ca :
Ca + 2H2O → Ca[OH]2 + H2
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संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
Hydrogen is combustible as well as a supporter of combustion.
Indicate which of the following statement is true and which is false:
Hydrogen gas is easily liquefiable.
Multiple Choice Question
Hydrogen is responsible for producing
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
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Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
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Al + NaOH + ____ → ____ + ____
Write balanced equation of the reaction in the preparation of : hydrogen from a solution of potassium hydroxide [other than by electrolysis].
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Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
