Answer: A mixture of CO and H 2 produced from steam reforming of hydrocarbons.
- A A mixture of CO and H<sub>2</sub> produced from steam reforming of hydrocarbons
- B Pure hydrogen gas obtained after fractional separation
- C A mixture of methane and hydrogen used directly as a fuel blend
- D A mixture of carbon dioxide and water vapour from combustion
Correct answer: A. A mixture of CO and H<sub>2</sub> produced from steam reforming of hydrocarbons
Explanation: Synthesis gas (syngas) is a CO/H<sub>2</sub> mixture used as feedstock for methanol, ammonia, and Fischer-Tropsch fuels.
Each water molecule's O-H bonds (covalent, solid) can hydrogen-bond (dashed) to neighbouring molecules, forming an extended network responsible for water's unusually high boiling point and density anomaly.
Concept context
The simplest and most abundant element in the universe. Study its unique position in the periodic table, isotopes (protium, deuterium, tritium), properties of water and hydrogen peroxide, and industrial uses.