Question

In context with the industrial preparation of hydrogen from water gas $(CO+H_2),$ which of the following is the correct statement?

• A. CO is oxidised to $C{O}_2$ with steam in the presence of a catalyst followed by absorption of $C{O}_2$ in alkali
• B. CO is removed by absorption in aqueous $C{u}_{2}C{l}_2$
• C. $H_2$ is removed through occlusion with pd
• D. CO and $H_2$ are fractionally separated using difference in their densities

Answer 1

The correct option is A CO is oxidised to $C{O}_2$ with steam in the presence of a catalyst followed by absorption of $C{O}_2$ in alkali

On the industrial scale hydrogen is prepared from water gas according to following reaction sequence
$CO+H_2+H_{2}O\stackrel{\text{catalyst}}{⟶}C{O}_2+H_2\underset{\text{(alkali)}}{\overset{2NaOH}{\to }}N{a}_{2}C{O}_3+H_{2}O$
From the above it is clear that CO is first oxidised to $C{O}_2$ which is then absorbed in NaOH. So the correct answer in option (a)