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प्रश्न
State why hydrogen is not prepared in the laboratory by the action of sodium with cold water.
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उत्तर
As sodium is very reactive and reacts with water violently, darts on the surface of water and collection of hydrogen becomes difficult.
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........................... means ‘maker of water’ in Greek.
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fully-labeled diagram
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The metal which reacts with steam liberating hydrogen & the reaction is reversible.
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\[\ce{CO + H2<-H2O->CO2 + H}\]
