Chemistry PYQ 86 of 152 · Everyday Chemistry

Steam methane reforming technique is used to obtain

  1. ABrown Hydrogen
  2. BGrey Hydrogen
  3. CGreen Hydrogen
  4. DNone of the above

70th BPSC

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Correct answer: (b) Grey Hydrogen

Explanation

Steam Methane Reforming (SMR) reacts methane with steam to produce hydrogen, but releases carbon dioxide.

Because of these CO₂ emissions, the product is Grey Hydrogen.

Brown hydrogen comes from coal gasification; green hydrogen from water electrolysis using renewable energy.

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