List of top Chemistry Questions on preparation of dihydrogen

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct?

The production of dihydrogen gas via water-gas shift reaction $ CO(g) + H_{2}O(g) { ->[{\Delta}][{Catalyst}] } CO_{2}(g) +H_{2}(g) $ The $ CO_{2} $ gas is removed by scrubbing with solution of

Hydrogen can be prepared by the action of dil $H_{2}SO_{4}$ on

Which does not replace hydrogen from $ HCl $ ?

Which one of the following can produce hydrogen when treated with metallic sodium?

$ {CO + H_2}$ is known as -