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← ScienceWhich risk increases when liquid hydrogen fuel lines experience micro-fractures?
A)Increased thermal convection inside the lines
B)Rapid oxidation causing material embrittlement
C)Catalytic dissociation initiating chain reactions✓
D)Spontaneous polymerization creating larger molecules
💡 Explanation
A micro-fracture provides surface area that catalyzes hydrogen dissociation into monatomic hydrogen via Catalytic Dissociation, because the metallic fracture surface acts as a surprisingly effective catalyst. Therefore, the monatomic hydrogen promotes further embrittlement rather than convection due to a different energy transfer type.
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