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प्रश्न
How did the name 'hydrogen' originate?
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उत्तर
The name 'hydrogen' originated on account of its ability to form water.
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ...................soluble in water.
How do different metals displace hydrogen from water? Explain with the help of equations.
Which metal is preferred for the preparation of hydrogen?
from water?
For laboratory preparation of hydrogen, give the following:
materials used
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
The meaning of the term ‘electrolysis’ and ‘electrolyte’.
Select the correct options for the following statement:
A foul smelling gas formed when hydrogen reacts with a molten non-metal, is ___.
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.
An efflorescent substance which leaves a residue having the same colour as the substance and evolves a gas which changes the colour of cobalt chloride paper.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{NaAlO2 + H2}\]
Give a balanced equation for the following conversion.
\[\ce{MgCl2<-HCl->FeCl2}\]
