How can the production of dihydrogen, obtained from 'Coal gasification', be increased?

How can the production of dihydrogen, obtained from 'coal gasification, the increased?

The production of dihydrogen obtained from coal gasification can be increased by reacting carbon monoxide of syngas mixture with steam in presence of a catalyst iron chromate. What is this process called?

The production of dihydrogen obtained from coal gasification can be increased by reacting carbon monoxide of syngas mixture with steam in presence of a catalyst iron chromate. What is this process called?

Explain with equations the production of dihydrogen increased by coal gasification and water gas shift reaction.

Coke is obtained from coal by:

What is coal gasification?

About 18% of the total production of dihydrogen is from coal. What is 'coal gasification?