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प्रश्न
For laboratory preparation of hydrogen, give the following:
chemical equation
उत्तर
\[\ce{Zn + 2HCl -> ZnCl2 + H2\uparrow}\]
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
Which metal is preferred for the preparation of hydrogen?
from acid?
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Why are the following metals not used in the lab. preparation of hydrogen?
aluminium
Starting from hydrogen gas how would you obtain a neutral liquid.
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.
An efflorescent substance which leaves a residue having the same colour as the substance and evolves a gas which changes the colour of cobalt chloride paper.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Magnesium - Mg + 2HCl → ______+ _______ [g]
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
State the reactant added to hydrogen to obtain the respective product in following case.
Water
