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प्रश्न
Select the correct options for the following statement:
The product formed on combustion of hydrogen in air is ___.
पर्याय
water gas
water
producer gas
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उत्तर
The product formed on combustion of hydrogen in air is water.
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संबंधित प्रश्न
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
Which metal is preferred for the preparation of hydrogen?
from acid?
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
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.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white substance which leaves an amphoteric oxide as a residue [whose colour varies in the heated and in the cold state] and evolves a gas which turns lime water milky.
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 metals with steam
Aluminium - 2Al + 3H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Al2(SO4)3 + H2}\]
