Q. Which of the following processes directly utilize hydrogen?

1. Production of ammonia for fertilizers
2. Manufacturing of methanol used as an industrial solvent
3. Space rocket fuel

Select the correct option from the codes given below:
Answer: 1, 2 & 3
Notes: Hydrogen is used with nitrogen in the Haber-Bosch process to make ammonia for fertilizers. Methanol production involves hydrogen and carbon monoxide. Liquid hydrogen is a main rocket fuel owing to its lightness and high energy. Therefore, all three, ammonia production, methanol manufacturing, and as rocket fuel directly utilize hydrogen.