Which one of the following processes is not used for the production of hydrogen gas?
Hydrolysis of calcium carbide
The electrolytic process splits water into hydrogen and oxygen gas by passing an electric current through it, so it is a genuine industrial method of producing hydrogen.
In the water gas-steam process, steam is passed over red-hot coke to give water gas (a mixture of carbon monoxide and hydrogen), which is a recognised commercial route to hydrogen.
Liquefaction and fractional distillation of coal gas is used to separate its hydrogen-rich fraction, so it too is a valid hydrogen-production method.
Hydrolysis of calcium carbide with water instead produces acetylene (C2H2) gas and calcium hydroxide, not hydrogen — this reaction is the standard method for generating acetylene, not hydrogen.
Hence, hydrolysis of calcium carbide is the process that is not used for producing hydrogen gas.
Important Questions from Chemical Reaction
Which of the following statement is/are true?
I. In physical change new substance is formed. substance is formed.
II. In chemical change no new substance is formed.
Which of the following cells involves similar chemical reactions?
The information not obtained from balanced chemical equation is
Oxygen cannot be obtained by which one of the following methods?
Which is the most reactive metal?
