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Preparation of Hydrogen

Question

In context with the industrial preparation of hydrogen from water gas $(C O + H_{2})$ , which of the following is the correct statement?
$C O$ is oxidised to $C O_{2}$ with steam in the presence of a catalyst followed by absorption of $C O_{2}$ in alkali
$C O$ is removed by absorption in aqueous $C u_{2} C l_{2}$ solution
$H_{2}$ is removed through occlusion with Pd
$C O$ and $H_{2}$ are fractionally separated using differences in their densities

A

H_{2}

is removed through occlusion with Pd

B

C O

and

H_{2}

are fractionally separated using differences in their densities

C

C O

is removed by absorption in aqueous

C u_{2} C l_{2}

solution

D

C O

is oxidised to

C O_{2}

with steam in the presence of a catalyst followed by absorption of

C O_{2}

in alkali

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Solution

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Water and coal are made to react by passing steam over red hot coke at very high temperature, producing a mixture of carbon monoxide and hydrogen which is called water gas.
Carbon monoxide is converted into carbon dioxide by passing the water gas and excess steam over the catalyst iron (III) oxide and chromium (III) oxide at very high temperature.
Carbon monoxide is separated from hydrogen gas by passing it through water at a pressure of 30 atmospheres due to which carbon monoxide is absorbed in water unlike hydrogen gas.

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