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प्रश्न
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
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उत्तर
Zn + 2HCl → ZnCl2 + H2
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ..................... than air.
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A monovalent metal
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
‘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:
The metal used as a catalyst in hydrogenation of oils.
Select the correct options for the following statement:
A foul smelling gas formed when hydrogen reacts with a molten non-metal, is ___.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Aluminium - 2Al + 2NaOH + 2H2O → ______ + _______ [g]
2Al + 2KOH + 2H2O → _____ + _____ [g]
