To solve this question, we need to match the items in List I with their appropriate descriptions in List II based on their typical industrial usage or process association.
Cobalt catalyst: Cobalt catalysts are commonly used in the Fischer-Tropsch process, which is involved in the production of synthetic fuels. However, in the context of methanol production, cobalt catalysts can also play a role in certain variations of this process, particularly where syngas to liquid fuel conversion is involved. Therefore, the match here is with methanol production (IV).
Syngas: Also known as synthesis gas, syngas comprises mainly hydrogen, carbon monoxide, and often some carbon dioxide. Syngas is crucial in the process of coal gasification, where coal is reacted with oxygen and steam to produce syngas. Thus, syngas is associated with coal gasification (III).
Nickel catalyst: Nickel catalysts are often used in processes involving hydrogenation and steam reforming. They are actively involved in water gas production, where hydrocarbons react with steam to produce carbon monoxide and hydrogen (known as water gas). So, nickel catalyst corresponds to water gas production (II).
Brine solution: A brine solution is typically associated with the production of chlorine and caustic soda through electrolysis. However, given the context of the options, it is more closely related to chemical processes like producing hydrogen chloride gas, which eventually contributes to hydrogen chloride and chlorine gas mixtures. Assuming this aligns with a process described here, the most fitting association is with hydrogen and chlorine production (I).
Therefore, the correct matches are:
A
Cobalt catalyst
IV
Methanol production
B
Syngas
III
Coal gasification
C
Nickel catalyst
II
Water gas production
D
Brine solution
I
(H2 + Cl2) production
Thus, the correct answer is A-IV, B-III, C-II, D-I.