Correct Answer - Option 2 : 0
Explanation:
Alpha-methylnaphthalene (C11H10) has a cetane number of zero.
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Cetane number is an indicator of the combustion speed of diesel fuel and compression needed for ignition.
- Cetane has a cetane number defined to be 100.
- Alpha-methylnaphthalene has been replaced as a reference fuel by heptamethylnonane, whose cetane number is 15.
- It plays a similar role for diesel as octane rating does for gasoline.
- The cetane number of a blend is calculated as a volume-weighted average
cetane number = % n-cetane + 0.15(% heptamethylnonane)