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Bosch Method

Water gas is ...

Question

Water gas is mixed with steam and the mixture is passed over heated $F e_{2} O_{3}$ in presence of $C r_{2} O_{3} .$
The mixture when passed in water dissolves $C O_{2}$ and dihydro gen left undissolved is collected. This method of preparation of hydrogen gas is known as:

A

Bosch process

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B

Lane process

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C

Kellner process

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D

Hall process

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Solution

The correct option is A Bosch process
For the commercial preparation of dihydrogen, Bosch process is used.

In Bosch's process, water gas (i.e. $C O + H_{2}$ ) is mixed with twice of its volume of steam in presence of catalysts $F e_{2} O_{3}$ and $C r_{2} O_{3}$ or $T h O_{2}$ where $C r_{2} O_{3}$ acts as promoter. It gives the products $C O_{2}$ and $H_{2}$ . Now, $C O_{2}$ is dissolved in water & removed leaving $H_{2}$ behind which is undissolved.

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