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प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
उत्तर
Hydrogen reacts with metal oxides to form metal and water.
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संबंधित प्रश्न
Which metal is preferred for the preparation of hydrogen?
from water?
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
Why are the following metals not used in the lab. preparation of hydrogen?
aluminium
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
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.
Name an element whsich reacts violently with water at room temperature.
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
State the reactant added to hydrogen to obtain the respective product in following case.
Ammonia
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Ca(OH)2 + H2}\]
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
