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← ScienceWhich risk increases when biodiesel fuel contains excess water?
A)Hydrolysis reduces fuel energy content✓
B)Viscosity causes increased pump cavitation
C)Increased NOₓ emissions due to combustion
D)Reduced flame speed from water quenching
💡 Explanation
Excess water catalyzes ester hydrolysis because water breaks ester bonds, reducing the concentration of fatty acid methyl esters and therefore the fuel's energy content, rather than alternative combustion process changes under normal operating conditions.
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