Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition _______________?
Correct answer: B. Electrolysis of water
- A. Cryogenic removal of H2 from coke oven gas
- B. Electrolysis of water
- C. Steam reforming of naphtha
- D. Natural gas cracking
Explanation
Electrolysis of water consumes substantial electrical energy, making hydrogen production costly where electricity is not exceptionally cheap. Natural-gas-based routes such as steam reforming are generally less expensive under the stated conditions.
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