Advertisements
Advertisements
प्रश्न
Why hot concentrated sulphuric acid is not used in the preparation of hydrogen?
Advertisements
उत्तर
Conc. sulphuric acid is not used in the preparation of hydrogen as it will produce sulphur dioxide.
Zn + 2H2SO4 →ZnSO4 + SO2 + 2H2O
APPEARS IN
संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
For laboratory preparation of hydrogen, give the following:
materials used
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A divalent metal
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 with steam
Aluminium - 2Al + 3H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Zinc - Zn + 2HCl → ______ + _______ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Fe3O4 + H2}\]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{NaAlO2 + H2}\]
