Which method is used to produce hydrogen in large scale?AFiltrationBEvaporationCsteam methane reformingDDistillationAnswer: C. steam methane reforming Read Explanation: The most common and cost-effective method used to produce hydrogen on a large scale is Steam-Methane Reforming (SMR). This process uses high-temperature steam and a catalyst to react with methane from natural gas, splitting it into hydrogen and carbon monoxide. Read more in App