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STD 11 - 9. Hydricarbon — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 9. Hydricarbon4 Marks
MCQ
Octane number has $0$ value for
  • A
    iso-octane
  • B
    $n-$ hexane
  • ✓
    $n-$ heptane
  • D
    iso-heptane
✓

Answer

Correct option: C.
$n-$ heptane
c
$n$-heptane is defined as the zero point of the octane rating scale. $2,2,4-$Trimethylpentane has an octane rating of $100$ , whereas $n$-heptane has an octane rating of $0$. The octane number is based on an arbitrary scale which is a measure of its ability to resist knocking, as it burns on combustion.

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