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← ScienceWhich risk increases dramatically when solid rocket propellant auto-ignites?
A)Uncontrolled chain branching reactions✓
B)Erosion due to convective cooling
C)Shockwave-induced rarefaction
D)Decreased nozzle ablation efficiency
💡 Explanation
Auto-ignition initiates uncontrolled chain branching reactions increasing the reaction rate exponentially, because energy release causes further radical production and accelerating combustion. Therefore, a runaway explosion is highly probable, rather than controlled combustion or merely altered heat transfer effects.
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