Which one of the following is known as cetane?

[amp_mcq option1=”Hexadecane” option2=”Heptadecane” option3=”Octadecane” option4=”Nonadecane” correct=”option1″]

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UPSC CDS-1 – 2024

Cetane is a term used in the context of diesel fuel quality.

Cetane is the common name for the alkane molecule hexadecane (C₁₆H₃₄). It is used as a reference standard with a high cetane number (defined as 100) to evaluate the ignition quality of diesel fuel.

The cetane number is a measure of a diesel fuel’s autoignition delay time. Fuels with higher cetane numbers ignite more readily under compression, leading to smoother engine operation.

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