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प्रश्न
Give a balanced equation for the following conversions sodium plumbite from lead.
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उत्तर
Sodium plumbite from lead
\[\ce{Pb + 2NaOH -> \underset{Sodium plumbite}{Na2PO2} + H2}\]
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Sodium liberates hydrogen when treated with cold .............
Name the impurities present in hydrogen prepared in the laboratory.
Give reason:
Apparatus for laboratory preparation of hydrogen should be airtight and away from a naked flame.
How would you show that hydrogen is lighter than air?
Starting from zinc how would you obtain hydrogen using an alkali.
[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 for the following conversion:
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Complete and balance the equation:
[Laboratory method]
By action of dilute acid on zinc
Zinc - Zn + 2HCl → _____ + _____ [g]
In the laboratory preparation of hydrogen from zinc and dil. acid. Give a reason for the following:
The complete apparatus is air-tight.
Name the following.
A gaseous reducing agent which is basic in nature.
