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प्रश्न
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
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उत्तर
The end of the thistle funnel should be dipped under acid so as to prevent the gas from escaping from the thistle funnel.
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ..................... than air.
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
How do different metals displace hydrogen from water? Explain with the help of equations.
Why nitric acid is not used in the preparation of hydrogen?
Why are the following metal not used in the lab. preparation of hydrogen?
iron
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Give reason for the following:
In the preparation of hydrogen by electrolysis of water – the distilled water used is acidified.
Select the correct options for the following statement:
The metallic compound formed when a metal above aluminium in the activity series reacts with steam.
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
