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Question
Name the following:
A metal which liberates hydrogen only when steam is passed over red hot metal.
Solution
Iron
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RELATED QUESTIONS
Indicate which of the following statement is true and which is false:
Zinc can liberate hydrogen from water, acid and alkali solution.
Name the chemicals required to prepare hydrogen gas in the laboratory.
FILL IN THE BLANK
........................ zinc is preferred over pure zinc in the laboratory preparation of hydrogen.
Name the impurities present in hydrogen prepared in the laboratory.
Starting from zinc how would you obtain hydrogen using Steam.
[Give balanced equation & name the product formed in the case other than hydrogen].
Name a metal which will not react with the reactants above to give hydrogen.
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[Give balanced equation & name the product formed in the case other than hydrogen].
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The complete apparatus is air-tight.
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Dilute nitric acid is not preferred as the reactant acid.
In the laboratory preparation of hydrogen from zinc and dil. acid. Give a reason for the following:
The lower end of the thistle funnel should dip below the level of the acid in the flask.
Select the correct answer from the symbol in the bracket.
The element which forms a diatomic molecule.
