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प्रश्न
For laboratory preparation of hydrogen, give the following:
materials used
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उत्तर
Granulated zinc, dilute HCl or dil. H2SO4
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संबंधित प्रश्न
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Multiple Choice Question
Water gas is a mixture of
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
State how hydrogen occurs in the free state. Name three compounds containing hydrogen in the combined state.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Iron - 3Fe + 4H2O ⇌ ______+ _______ [g]
Name an element whsich reacts violently with water at room temperature.
Account for the following fact:
Potassium and sodium are not used to react with dilute ‘hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
State the electronic configuration of hydrogen [at. no. 1].e
Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table.
Give a balanced equation for the following conversion.
\[\ce{MgCl2<-HCl->FeCl2}\]
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
