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Which outcome occurs when cryogenic liquid nitrogen leaks onto warm asphalt?

A)Rapid phase expansion ruptures the asphalt
B)Nitrogen rapidly decomposes to ammonia
C)Asphalt's viscosity decreases significantly
D)Nitrogen becomes a supercritical fluid near

💡 Explanation

Nitrogen’s rapid vaporization on warm asphalt goes through rapid phase expansion called Leidenfrost effect leading to extreme pressure. This leads to asphalt rupture because the nitrogen quickly expands, therefore asphalt cracks rather than nitrogen converting or viscosity changes because nitrogen doesn't usually decompose or substantially change viscosity.

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