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प्रश्न
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the metals copper, zinc, magnesium or sodium would be the most suitable?
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उत्तर
Zinc is the most preferred metal in the laboratory preparation of hydrogen.
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ...................soluble in water.
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Which test should be made before collecting hydrogen in a gas jar?
Why hot concentrated sulphuric acid is not used in the preparation of hydrogen?
Give a reason for the following:
Zinc granules are used in the lab preparation of hydrogen.
Complete and balance the following reaction.
Na + H2O →_____________ +___________
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white substance which leaves an amphoteric oxide as a residue [whose colour varies in the heated and in the cold state] and evolves a gas which turns lime water milky.
Give a balanced equation for the following conversion.
\[\ce{ZnO<-H2O->Fe3O4}\]
Give a balanced equation for the following conversion.
\[\ce{NH3<-H2->H2S}\]
