What is the reason for ethanol to be difficult to ignite at a lower temperature?(a) High combustion(b) Aroma(c) structure of hydrocarbon(d) Less volatileI got this question in an international level competition.My question is based upon Alternative Fuels topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

What is the reason for ethanol to be difficult to ignite at a lower te

1.	What is the reason for ethanol to be difficult to ignite at a lower temperature?(a) High combustion(b) Aroma(c) structure of hydrocarbon(d) Less volatileI got this question in an international level competition.My question is based upon Alternative Fuels topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct OPTION is (d) Less volatile To explain: Pure ethanol is less volatile than petrol due to which it becomes DIFFICULT to IGNITE at lower temperatures, which means, starting a cold engine during WINTER is difficult.

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