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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
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Give reason:
A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.
Starting from hydrogen gas how would you obtain a metal by reduction of its heated oxide.
Select the correct options for the following statement:
The product formed on combustion of hydrogen in air is ___.
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Sodium - 2Na + 2H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen sulphide
Give a balanced equation for the following conversion.
\[\ce{NH3<-H2->H2S}\]
