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प्रश्न
Name an element whsich reacts violently with water at room temperature.
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उत्तर
Element reacts with water violently at room temperature is potassium.
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संबंधित प्रश्न
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Give a reason for the following:
Zinc granules are used in the lab preparation of hydrogen.
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Select the correct options for the following statement:
The metal used as a catalyst in hydrogenation of oils.
Account for the following fact:
Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilutes sulphuric acid.
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Ca(OH)2 + H2}\]
