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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 9. Hydricarbon4 Marks
MCQ
Which of the following has highest knocking property
  • A
    Aromatic hydrocarbons
  • B
    Olefins
  • C
    Branched chain paraffins
  • ✓
    Straight chain paraffins
✓

Answer

Correct option: D.
Straight chain paraffins
d
(d) Octane number increases in the order

Straight chain alkanes < Branched chain alkanes < Olefins < Cyclo alkanes < Aromatic compounds

Since, straight chain alkane has minimum octane number. Hence, it produces maximum knocking.

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