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Which outcome occurs when high furnace temperatures deplete available oxygen during methane pyrolysis?

A)Soot formation increases unexpectedly
B)Methane conversion efficiency rises
C)Hydrogen production becomes negligible
D)The cracking rate remains unchanged

💡 Explanation

At lower oxygen levels, incomplete combustion becomes more likely; the excess creation of carbon intermediates leads to soot formation because the oxidation catalyst route is bypassed, therefore, the methane partially pyrolyzes leading to undesired carbon instead rather than the targeted lighter hydrocarbons.

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